<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  11.3.0.1 -->
<!--Based on XBRL 2.1-->
<!--Created on: 6/18/2026 6:03:24 PM-->
<!--Modified on: 6/18/2026 6:03:24 PM-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink">
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DocumentDocumentAndEntityInformation" roleURI="http://communityfinancialsystem.com/role/DocumentDocumentAndEntityInformation" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#StatementStatementsOfNetAssetsAvailableForBenefits" roleURI="http://communityfinancialsystem.com/role/StatementStatementsOfNetAssetsAvailableForBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#StatementStatementsOfChangesInNetAssetsAvailableForBenefits" roleURI="http://communityfinancialsystem.com/role/StatementStatementsOfChangesInNetAssetsAvailableForBenefits" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureDescriptionOfPlan" roleURI="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlan" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureSignificantAccountingPolicies" roleURI="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPolicies" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureInvestments" roleURI="http://communityfinancialsystem.com/role/DisclosureInvestments" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureFairValueMeasurements" roleURI="http://communityfinancialsystem.com/role/DisclosureFairValueMeasurements" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureTransactionsWithPartiesInInterest" roleURI="http://communityfinancialsystem.com/role/DisclosureTransactionsWithPartiesInInterest" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureIncomeTaxStatus" roleURI="http://communityfinancialsystem.com/role/DisclosureIncomeTaxStatus" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureReconciliationOfFinancialStatementsToForm5500" roleURI="http://communityfinancialsystem.com/role/DisclosureReconciliationOfFinancialStatementsToForm5500" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureEconomicDependencyAndConcentrationOfCreditRisk" roleURI="http://communityfinancialsystem.com/role/DisclosureEconomicDependencyAndConcentrationOfCreditRisk" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureScheduleOfAssetsHeldAtEndOfYear" roleURI="http://communityfinancialsystem.com/role/DisclosureScheduleOfAssetsHeldAtEndOfYear" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureSignificantAccountingPoliciesPolicies" roleURI="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesPolicies" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureFairValueMeasurementsTables" roleURI="http://communityfinancialsystem.com/role/DisclosureFairValueMeasurementsTables" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureReconciliationOfFinancialStatementsToForm5500Tables" roleURI="http://communityfinancialsystem.com/role/DisclosureReconciliationOfFinancialStatementsToForm5500Tables" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureDescriptionOfPlanGeneralDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanGeneralDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureDescriptionOfPlanContributionDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanContributionDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureDescriptionOfPlanParticipantAccountsAndVestingDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanParticipantAccountsAndVestingDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureDescriptionOfPlanNotesReceivableFromParticipantsDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanNotesReceivableFromParticipantsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureDescriptionOfPlanPaymentsOfBenefitsAndPlanTerminationDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanPaymentsOfBenefitsAndPlanTerminationDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureSignificantAccountingPoliciesValuationOfInvestmentsDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesValuationOfInvestmentsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureSignificantAccountingPoliciesAdministrativeExpensesDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesAdministrativeExpensesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureSignificantAccountingPoliciesInactiveAccountsDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesInactiveAccountsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureSignificantAccountingPoliciesValuationAllowanceDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesValuationAllowanceDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureFairValueMeasurementsDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureFairValueMeasurementsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureTransactionsWithPartiesInInterestDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureTransactionsWithPartiesInInterestDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureIncomeTaxStatusDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureIncomeTaxStatusDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureReconciliationOfFinancialStatementsToForm5500Details" roleURI="http://communityfinancialsystem.com/role/DisclosureReconciliationOfFinancialStatementsToForm5500Details" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureEconomicDependencyAndConcentrationOfCreditRiskDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureEconomicDependencyAndConcentrationOfCreditRiskDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="cbu-20251231.xsd#DisclosureScheduleOfAssetsHeldAtEndOfYearDetails" roleURI="http://communityfinancialsystem.com/role/DisclosureScheduleOfAssetsHeldAtEndOfYearDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DocumentDocumentAndEntityInformation" xlink:type="extended" xlink:title="00090 - Document - Document and Entity Information" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_CoverAbstract" xlink:label="CoverAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationTable" xlink:label="dei_DocumentInformationTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="CoverAbstract" xlink:to="dei_DocumentInformationTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_DocumentInformationTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentInformationLineItems" xlink:label="dei_DocumentInformationLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_DocumentInformationTable_639174026042158458" xlink:to="dei_DocumentInformationLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_DocumentType" xlink:label="dei_DocumentType_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_DocumentInformationLineItems_639174026042158458" xlink:to="dei_DocumentType_639174026042158458" order="1" use="optional" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_DocumentInformationLineItems_639174026042158458" xlink:to="dei_EntityRegistrantName_639174026042158458" order="2" use="optional" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_DocumentInformationLineItems_639174026042158458" xlink:to="dei_EntityCentralIndexKey_639174026042158458" order="3" use="optional" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_DocumentInformationLineItems_639174026042158458" xlink:to="dei_AmendmentFlag_639174026042158458" order="4" use="optional" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/StatementStatementsOfNetAssetsAvailableForBenefits" xlink:type="extended" xlink:title="00100 - Statement - Statements of Net Assets Available for Benefits" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable_639174026042158458" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis_639174026042158458" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel12And3Member" xlink:label="us-gaap_FairValueInputsLevel12And3Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042158458" xlink:to="us-gaap_FairValueInputsLevel12And3Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember" xlink:label="us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042158458" xlink:to="us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable_639174026042158458" xlink:to="us-gaap_InvestmentTypeAxis_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeAxis_639174026042158458" xlink:to="us-gaap_InvestmentTypeCategorizationMember_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MutualFundMember" xlink:label="us-gaap_MutualFundMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042158458" xlink:to="us-gaap_MutualFundMember_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanSelfDirectedBrokerageAccountMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSelfDirectedBrokerageAccountMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanSelfDirectedBrokerageAccountMember_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitLineItems_639174026042158458" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAssetAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAbstract_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAbstract_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpInvestmentExcludingPlanInterestInMasterTrustFairValueTypeExtensibleEnumeration" xlink:label="us-gaap-ebp_EbpInvestmentExcludingPlanInterestInMasterTrustFairValueTypeExtensibleEnumeration_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAbstract_639174026042158458" xlink:to="us-gaap-ebp_EbpInvestmentExcludingPlanInterestInMasterTrustFairValueTypeExtensibleEnumeration_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentContractValueAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentContractValueAbstract_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentContractValueAbstract_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentContractValueAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairAndContractValue" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairAndContractValue_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairAndContractValue_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReceivableAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReceivableAbstract_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAssetAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReceivableAbstract_639174026042158458" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerContributionReceivable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionReceivable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReceivableAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionReceivable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipant" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipant_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReceivableAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipant_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReceivable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReceivable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReceivableAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReceivable_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfNetAssetAvailableForBenefitLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/StatementStatementsOfChangesInNetAssetsAvailableForBenefits" xlink:type="extended" xlink:title="00200 - Statement - Statements of Changes in Net Assets Available for Benefits" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContribution" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContribution_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForParticipantContribution_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForEmployerContribution_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForInterestAndDividendIncomeOnInvestment_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseForGainLossOnInvestment_639174026042158458" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncrease_639174026042158458" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForPaymentToParticipant_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseForAdministrativeExpense_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitReserveForDeemedDistribution" xlink:label="cbu_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitReserveForDeemedDistribution_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitReserveForDeemedDistribution_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitDecrease_639174026042158458" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseAbstract_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanStatementOfChangeInNetAssetAvailableForBenefitLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseAbstract_639174026042158458" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_6391740260421584581" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecreaseAbstract_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_6391740260421584581" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" priority="2" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlan" xlink:type="extended" xlink:title="10101 - Disclosure - Description of the Plan" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPolicies" xlink:type="extended" xlink:title="10201 - Disclosure - Significant Accounting Policies" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanSummaryOfAccountingPolicyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSummaryOfAccountingPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanSummaryOfAccountingPolicyTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureInvestments" xlink:type="extended" xlink:title="10301 - Disclosure - Investments" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanInvestmentsAbstract" xlink:label="cbu_EmployeeBenefitPlanInvestmentsAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="cbu_EmployeeBenefitPlanInvestmentsAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanInvestmentsTextBlock" xlink:label="cbu_EmployeeBenefitPlanInvestmentsTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanInvestmentsTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureFairValueMeasurements" xlink:type="extended" xlink:title="10401 - Disclosure - Fair Value Measurements" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureTransactionsWithPartiesInInterest" xlink:type="extended" xlink:title="10501 - Disclosure - Transactions with Parties-in-Interest" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureIncomeTaxStatus" xlink:type="extended" xlink:title="10601 - Disclosure - Income Tax Status" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxStatusAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxStatusTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureReconciliationOfFinancialStatementsToForm5500" xlink:type="extended" xlink:title="10701 - Disclosure - Reconciliation of Financial Statements to Form 5500" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureEconomicDependencyAndConcentrationOfCreditRisk" xlink:type="extended" xlink:title="10801 - Disclosure - Economic Dependency and Concentration of Credit Risk" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyAbstract" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyTable" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyAbstract" xlink:to="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyLineItems" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042158458" xlink:to="us-gaap-ebp_EbpRiskAndUncertaintyLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRiskAndUncertaintyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRiskAndUncertaintyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRiskAndUncertaintyTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureScheduleOfAssetsHeldAtEndOfYear" xlink:type="extended" xlink:title="10901 - Disclosure - Schedule of Assets (Held at End of Year)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentAbstract" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentAbstract" xlink:to="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTableTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTableTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTableTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesPolicies" xlink:type="extended" xlink:title="20202 - Disclosure - Significant Accounting Policies (Policies)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_1" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanBasisOfAccountingPolicyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanBasisOfAccountingPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanBasisOfAccountingPolicyTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentPolicyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentPolicyTextBlock_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanPaymentToParticipantPolicyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanPaymentToParticipantPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanPaymentToParticipantPolicyTextBlock_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanExpensePolicyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanExpensePolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanExpensePolicyTextBlock_639174026042158458" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanInactiveAccountsPolicyTextBlock" xlink:label="cbu_EmployeeBenefitPlanInactiveAccountsPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanInactiveAccountsPolicyTextBlock_639174026042158458" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanUseOfEstimatePolicyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanUseOfEstimatePolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanUseOfEstimatePolicyTextBlock_639174026042158458" order="6" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyPolicyTextBlock" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EbpRiskAndUncertaintyPolicyTextBlock_639174026042158458" order="7" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanPlanProvisionsPolicyTextBlock" xlink:label="cbu_EmployeeBenefitPlanPlanProvisionsPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanPlanProvisionsPolicyTextBlock_639174026042158458" order="8" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanValuationAllowancePolicyTextBlock" xlink:label="cbu_EmployeeBenefitPlanValuationAllowancePolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanValuationAllowancePolicyTextBlock_639174026042158458" order="9" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanSubsequentEventPolicyTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSubsequentEventPolicyTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanSubsequentEventPolicyTextBlock_639174026042158458" order="10" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureFairValueMeasurementsTables" xlink:type="extended" xlink:title="30403 - Disclosure - Fair Value Measurements (Tables)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract_1" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTableTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTableTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTableTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureReconciliationOfFinancialStatementsToForm5500Tables" xlink:type="extended" xlink:title="30703 - Disclosure - Reconciliation of Financial Statements to Form 5500 (Tables)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract_1" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TableTextBlock" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TableTextBlock_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500TableTextBlock_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanGeneralDetails" xlink:type="extended" xlink:title="40101 - Disclosure - Description of the Plan - General (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_1" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="dei_LegalEntityAxis_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042158458" xlink:to="dei_EntityDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042158458" xlink:to="cbu_EBP002Member_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementScenarioAxis" xlink:label="srt_StatementScenarioAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="srt_StatementScenarioAxis_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="srt_ScenarioUnspecifiedDomain_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_StatementScenarioAxis_639174026042158458" xlink:to="srt_ScenarioUnspecifiedDomain_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanAutomaticIncreaseInParticipantContributionTrancheOneMember" xlink:label="cbu_EmployeeBenefitPlanAutomaticIncreaseInParticipantContributionTrancheOneMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScenarioUnspecifiedDomain_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanAutomaticIncreaseInParticipantContributionTrancheOneMember_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanAutomaticIncreaseInParticipantContributionTrancheTwoMember" xlink:label="cbu_EmployeeBenefitPlanAutomaticIncreaseInParticipantContributionTrancheTwoMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScenarioUnspecifiedDomain_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanAutomaticIncreaseInParticipantContributionTrancheTwoMember_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="srt_RangeAxis_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember" xlink:label="srt_RangeMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis_639174026042158458" xlink:to="srt_RangeMember_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember_639174026042158458" xlink:to="srt_MaximumMember_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanMinimumAgeForPlanEligibility" xlink:label="cbu_EmployeeBenefitPlanMinimumAgeForPlanEligibility_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanMinimumAgeForPlanEligibility_639174026042158458" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanMinimumServicePeriodForPlanEligibility" xlink:label="cbu_EmployeeBenefitPlanMinimumServicePeriodForPlanEligibility_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanMinimumServicePeriodForPlanEligibility_639174026042158458" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate" xlink:label="us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate_639174026042158458" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" xlink:to="us-gaap-ebp_EmployeeBenefitPlanParticipantContributionAutomaticDeferralRate_639174026042158458" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanParticipantContributionAutomaticIncreaseInDeferralRate" xlink:label="cbu_EmployeeBenefitPlanParticipantContributionAutomaticIncreaseInDeferralRate_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042158458" xlink:to="cbu_EmployeeBenefitPlanParticipantContributionAutomaticIncreaseInDeferralRate_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanContributionDetails" xlink:type="extended" xlink:title="40102 - Disclosure - Description of the Plan - Contribution (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_2" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_2" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementScenarioAxis" xlink:label="srt_StatementScenarioAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="srt_StatementScenarioAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="srt_ScenarioUnspecifiedDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_StatementScenarioAxis_639174026042315233" xlink:to="srt_ScenarioUnspecifiedDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanContributionByEmployeeTrancheOneMember" xlink:label="cbu_EmployeeBenefitPlanContributionByEmployeeTrancheOneMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScenarioUnspecifiedDomain_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanContributionByEmployeeTrancheOneMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanContributionByEmployeeTrancheTwoMember" xlink:label="cbu_EmployeeBenefitPlanContributionByEmployeeTrancheTwoMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScenarioUnspecifiedDomain_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanContributionByEmployeeTrancheTwoMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage" xlink:label="us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationToTotalCompensationPercentage_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationAmount" xlink:label="us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationAmount_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanParticipantContributionPretaxMaximumAnnualCompensationAmount_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanMinimumServicePeriodForPlanEligibility" xlink:label="cbu_EmployeeBenefitPlanMinimumServicePeriodForPlanEligibility_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanMinimumServicePeriodForPlanEligibility_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionParticipantCompensationMatchedPercentage_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanEmployerContributionMatchingPercentage_639174026042315233" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanEmployerContributionMatching" xlink:label="cbu_EmployeeBenefitPlanEmployerContributionMatching_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanEmployerContributionMatching_639174026042315233" order="6" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanAdditionalEmployerContributions" xlink:label="cbu_EmployeeBenefitPlanAdditionalEmployerContributions_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanAdditionalEmployerContributions_639174026042315233" order="7" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanQualifiedNonElectiveContribution" xlink:label="cbu_EmployeeBenefitPlanQualifiedNonElectiveContribution_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanQualifiedNonElectiveContribution_639174026042315233" order="8" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanParticipantAccountsAndVestingDetails" xlink:type="extended" xlink:title="40103 - Disclosure - Description of the Plan - Participant accounts and vesting (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_3" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_3" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccountReallocatedToParticipant" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccountReallocatedToParticipant_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanForfeitedNonvestedAccountReallocatedToParticipant_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanEmployerContributionMatchingVestingPercentage" xlink:label="cbu_EmployeeBenefitPlanEmployerContributionMatchingVestingPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanEmployerContributionMatchingVestingPercentage_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanEmployerContributionMatchingVestingPeriod" xlink:label="cbu_EmployeeBenefitPlanEmployerContributionMatchingVestingPeriod_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanEmployerContributionMatchingVestingPeriod_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanAdditionalEmployerContributionVestingPercentage" xlink:label="cbu_EmployeeBenefitPlanAdditionalEmployerContributionVestingPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanAdditionalEmployerContributionVestingPercentage_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanAdditionalEmployerContributionVestingPeriod" xlink:label="cbu_EmployeeBenefitPlanAdditionalEmployerContributionVestingPeriod_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanAdditionalEmployerContributionVestingPeriod_639174026042315233" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanNotesReceivableFromParticipantsDetails" xlink:type="extended" xlink:title="40104 - Disclosure - Description of the Plan - Notes Receivable from Participants (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_4" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_4" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="srt_RangeAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember" xlink:label="srt_RangeMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis_639174026042315233" xlink:to="srt_RangeMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember" xlink:label="srt_MinimumMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember_639174026042315233" xlink:to="srt_MinimumMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember_639174026042315233" xlink:to="srt_MaximumMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_639174026042315233" order="3" use="optional" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableTypeDomain" xlink:label="us-gaap_ReceivableTypeDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_639174026042315233" xlink:to="us-gaap_ReceivableTypeDomain_639174026042315233" order="1" use="optional" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_ResidentialLoansMember" xlink:label="cbu_ResidentialLoansMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReceivableTypeDomain_639174026042315233" xlink:to="cbu_ResidentialLoansMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_ReservePlusLoansMember" xlink:label="cbu_ReservePlusLoansMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReceivableTypeDomain_639174026042315233" xlink:to="cbu_ReservePlusLoansMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMinimumBorrowingAmount_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingAmount" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingAmount_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingAmount_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingToTotalAccountPercentage" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingToTotalAccountPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAccountMaximumBorrowingToTotalAccountPercentage_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanNoteReceivableFromParticipantBasisSpreadOnPrimeRate" xlink:label="cbu_EmployeeBenefitPlanNoteReceivableFromParticipantBasisSpreadOnPrimeRate_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanNoteReceivableFromParticipantBasisSpreadOnPrimeRate_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate" xlink:label="us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate_639174026042315233" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureDescriptionOfPlanPaymentsOfBenefitsAndPlanTerminationDetails" xlink:type="extended" xlink:title="40105 - Disclosure - Description of the Plan - Payments of benefits and plan termination (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_5" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanAbstract_5" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanParticipantNormalRetirementAge" xlink:label="cbu_EmployeeBenefitPlanParticipantNormalRetirementAge_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanParticipantNormalRetirementAge_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanParticipantYearsOfServiceCompleted" xlink:label="cbu_EmployeeBenefitPlanParticipantYearsOfServiceCompleted_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanParticipantYearsOfServiceCompleted_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanMaximumVestedBalanceForSingleLumpSumPayment" xlink:label="cbu_EmployeeBenefitPlanMaximumVestedBalanceForSingleLumpSumPayment_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanMaximumVestedBalanceForSingleLumpSumPayment_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanMinimumVestedBalanceForSingleLumpSumPayment" xlink:label="cbu_EmployeeBenefitPlanMinimumVestedBalanceForSingleLumpSumPayment_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanMinimumVestedBalanceForSingleLumpSumPayment_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployerBenefitPlanMaximumAgeOfParticipantForPaymentDeferral" xlink:label="cbu_EmployerBenefitPlanMaximumAgeOfParticipantForPaymentDeferral_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployerBenefitPlanMaximumAgeOfParticipantForPaymentDeferral_639174026042315233" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanHardshipWithdrawalPercentageOnEmployeeContributions" xlink:label="cbu_EmployeeBenefitPlanHardshipWithdrawalPercentageOnEmployeeContributions_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanHardshipWithdrawalPercentageOnEmployeeContributions_639174026042315233" order="6" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanVestingPercentageInEventOfTermination" xlink:label="cbu_EmployeeBenefitPlanVestingPercentageInEventOfTermination_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanDescriptionOfPlanLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanVestingPercentageInEventOfTermination_639174026042315233" order="7" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesValuationOfInvestmentsDetails" xlink:type="extended" xlink:title="40201 - Disclosure - Significant Accounting Policies - Valuation of Investments (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_2" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_2" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="us-gaap_InvestmentTypeAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeAxis_639174026042315233" xlink:to="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FixedIncomeInvestmentsMember" xlink:label="us-gaap_FixedIncomeInvestmentsMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap_FixedIncomeInvestmentsMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanInvestmentTotalReturnPercentage" xlink:label="cbu_EmployeeBenefitPlanInvestmentTotalReturnPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanInvestmentTotalReturnPercentage_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanInvestmentCreditingInterestPercentage" xlink:label="cbu_EmployeeBenefitPlanInvestmentCreditingInterestPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanInvestmentCreditingInterestPercentage_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanParticipantDirectedWithdrawalsProcessingPeriod" xlink:label="cbu_EmployeeBenefitPlanParticipantDirectedWithdrawalsProcessingPeriod_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanParticipantDirectedWithdrawalsProcessingPeriod_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpFairValueInvestmentNavUnfundedCommitment" xlink:label="us-gaap-ebp_EbpFairValueInvestmentNavUnfundedCommitment_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" xlink:to="us-gaap-ebp_EbpFairValueInvestmentNavUnfundedCommitment_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesAdministrativeExpensesDetails" xlink:type="extended" xlink:title="40202 - Disclosure - Significant Accounting Policies - Administrative Expenses (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_3" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_3" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTrusteeMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTrusteeMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTrusteeMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployerBenefitPlanAdministrativeFeesPaid" xlink:label="cbu_EmployerBenefitPlanAdministrativeFeesPaid_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" xlink:to="cbu_EmployerBenefitPlanAdministrativeFeesPaid_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesInactiveAccountsDetails" xlink:type="extended" xlink:title="40203 - Disclosure - Significant Accounting Policies - Inactive Accounts (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_4" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_4" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeesBenefitPlanAccountBalancesOfInactiveAccounts" xlink:label="cbu_EmployeesBenefitPlanAccountBalancesOfInactiveAccounts_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" xlink:to="cbu_EmployeesBenefitPlanAccountBalancesOfInactiveAccounts_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureSignificantAccountingPoliciesValuationAllowanceDetails" xlink:type="extended" xlink:title="40204 - Disclosure - Significant Accounting Policies - Valuation Allowance (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_5" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyAbstract_5" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAllowanceForCreditLoss" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAllowanceForCreditLoss_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanAccountingPolicyLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNoteReceivableFromParticipantAllowanceForCreditLoss_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureFairValueMeasurementsDetails" xlink:type="extended" xlink:title="40401 - Disclosure - Fair Value Measurements (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract_2" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavAbstract_2" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042315233" xlink:to="us-gaap_InvestmentTypeAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeAxis_639174026042315233" xlink:to="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MutualFundMember" xlink:label="us-gaap_MutualFundMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap_MutualFundMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanSelfDirectedBrokerageAccountMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanSelfDirectedBrokerageAccountMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanSelfDirectedBrokerageAccountMember_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042315233" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis_639174026042315233" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel12And3Member" xlink:label="us-gaap_FairValueInputsLevel12And3Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042315233" xlink:to="us-gaap_FairValueInputsLevel12And3Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="us-gaap_FairValueInputsLevel1Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueInputsLevel12And3Member_639174026042315233" xlink:to="us-gaap_FairValueInputsLevel1Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="us-gaap_FairValueInputsLevel2Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueInputsLevel12And3Member_639174026042315233" xlink:to="us-gaap_FairValueInputsLevel2Member_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember" xlink:label="us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_639174026042315233" xlink:to="us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanInvestmentFairValueAndNavLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureTransactionsWithPartiesInInterestDetails" xlink:type="extended" xlink:title="40501 - Disclosure - Transactions with Parties-in-Interest (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsAbstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsAbstract_1" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042315233" xlink:to="us-gaap_InvestmentTypeAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeAxis_639174026042315233" xlink:to="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestAxis_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTrusteeMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTrusteeMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTrusteeMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanSponsorMember" xlink:label="cbu_EmployeeBenefitPlanSponsorMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanSponsorMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployeeBenefitPlanSubsidiaryMember" xlink:label="cbu_EmployeeBenefitPlanSubsidiaryMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestDomain_639174026042315233" xlink:to="cbu_EmployeeBenefitPlanSubsidiaryMember_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EmployerBenefitPlanAdministrativeFeesPaid" xlink:label="cbu_EmployerBenefitPlanAdministrativeFeesPaid_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="cbu_EmployerBenefitPlanAdministrativeFeesPaid_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfShares" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfShares_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfShares_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustCost" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustCost_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustCost_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustFairValue_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForDividendIncomeOnInvestment" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForDividendIncomeOnInvestment_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseForDividendIncomeOnInvestment_639174026042315233" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfSharesSold" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfSharesSold_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfSharesSold_639174026042315233" order="6" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfSharesPurchased" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfSharesPurchased_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfSharesPurchased_639174026042315233" order="7" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanRelatedPartyAndPartyInInterestTransactionsLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentExcludingPlanInterestInMasterTrustContractValue_639174026042315233" order="8" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureIncomeTaxStatusDetails" xlink:type="extended" xlink:title="40601 - Disclosure - Income Tax Status (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxStatusAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusAbstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusAbstract_1" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterObtained" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterObtained_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterObtained_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterDate" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterDate_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxDeterminationLetterDate_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanTaxQualificationStatusExtensibleEnumeration" xlink:label="us-gaap-ebp_EmployeeBenefitPlanTaxQualificationStatusExtensibleEnumeration_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanTaxStatusLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanTaxQualificationStatusExtensibleEnumeration_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureReconciliationOfFinancialStatementsToForm5500Details" xlink:type="extended" xlink:title="40701 - Disclosure - Reconciliation of Financial Statements to Form 5500 (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract_2" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Abstract_2" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500Table_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefitAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefitAbstract_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefitAbstract_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit" xlink:label="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefitAbstract_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanNetAssetAvailableForBenefit_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EbpReconciliationToForm5500NetAssetAvailableForBenefitAllowanceForNotesReceivableFromParticipants" xlink:label="cbu_EbpReconciliationToForm5500NetAssetAvailableForBenefitAllowanceForNotesReceivableFromParticipants_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefitAbstract_639174026042315233" xlink:to="cbu_EbpReconciliationToForm5500NetAssetAvailableForBenefitAllowanceForNotesReceivableFromParticipants_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefitAbstract_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetAssetAvailableForBenefit_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLossAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLossAbstract_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500LineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLossAbstract_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease" xlink:label="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLossAbstract_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanChangeInNetAssetAvailableForBenefitIncreaseDecrease_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitDecreaseForDeemedDistributionCurrentPeriod" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitDecreaseForDeemedDistributionCurrentPeriod_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLossAbstract_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitDecreaseForDeemedDistributionCurrentPeriod_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitIncreaseForDeemedDistributionPriorPeriod" xlink:label="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitIncreaseForDeemedDistributionPriorPeriod_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLossAbstract_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanReconciliationToForm5500ChangeInNetAssetAvailableForBenefitIncreaseForDeemedDistributionPriorPeriod_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLoss" xlink:label="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLoss_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLossAbstract_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanForm5500CaptionNetIncomeLoss_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureEconomicDependencyAndConcentrationOfCreditRiskDetails" xlink:type="extended" xlink:title="40801 - Disclosure - Economic Dependency and Concentration of Credit Risk (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyAbstract" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyAbstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyTable" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyAbstract_1" xlink:to="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042315233" xlink:to="us-gaap_InvestmentTypeAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeAxis_639174026042315233" xlink:to="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember" xlink:label="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanEmployerCommonStockMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MutualFundMember" xlink:label="us-gaap_MutualFundMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap_MutualFundMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIssuerNameAxis" xlink:label="us-gaap_InvestmentIssuerNameAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042315233" xlink:to="us-gaap_InvestmentIssuerNameAxis_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIssuerNameDomain" xlink:label="us-gaap_InvestmentIssuerNameDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentIssuerNameAxis_639174026042315233" xlink:to="us-gaap_InvestmentIssuerNameDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_VanguardMember" xlink:label="cbu_VanguardMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentIssuerNameDomain_639174026042315233" xlink:to="cbu_VanguardMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_JpMorganMember" xlink:label="cbu_JpMorganMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentIssuerNameDomain_639174026042315233" xlink:to="cbu_JpMorganMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyLineItems" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyTable_639174026042315233" xlink:to="us-gaap-ebp_EbpRiskAndUncertaintyLineItems_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EbpRiskAndUncertaintyConcentrationOfInvestmentAtFairValueToTotalInvestmentsPercentage" xlink:label="us-gaap-ebp_EbpRiskAndUncertaintyConcentrationOfInvestmentAtFairValueToTotalInvestmentsPercentage_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EbpRiskAndUncertaintyLineItems_639174026042315233" xlink:to="us-gaap-ebp_EbpRiskAndUncertaintyConcentrationOfInvestmentAtFairValueToTotalInvestmentsPercentage_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
  <presentationLink xlink:role="http://communityfinancialsystem.com/role/DisclosureScheduleOfAssetsHeldAtEndOfYearDetails" xlink:type="extended" xlink:title="40901 - Disclosure - Schedule of Assets (Held at End of Year) (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentAbstract" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentAbstract_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentAbstract_1" xlink:to="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042315233" xlink:to="dei_LegalEntityAxis_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis_639174026042315233" xlink:to="dei_EntityDomain_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="cbu-20251231.xsd#cbu_EBP002Member" xlink:label="cbu_EBP002Member_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain_639174026042315233" xlink:to="cbu_EBP002Member_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042315233" xlink:to="srt_RangeAxis_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember" xlink:label="srt_RangeMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis_639174026042315233" xlink:to="srt_RangeMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember" xlink:label="srt_MinimumMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember_639174026042315233" xlink:to="srt_MinimumMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember_639174026042315233" xlink:to="srt_MaximumMember_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentIdentifierAxis" xlink:label="us-gaap_InvestmentIdentifierAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042315233" xlink:to="us-gaap_InvestmentIdentifierAxis_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeAxis" xlink:label="us-gaap_InvestmentTypeAxis_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042315233" xlink:to="us-gaap_InvestmentTypeAxis_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeAxis_639174026042315233" xlink:to="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/label" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MutualFundMember" xlink:label="us-gaap_MutualFundMember_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InvestmentTypeCategorizationMember_639174026042315233" xlink:to="us-gaap_MutualFundMember_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems" xlink:label="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentTable_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentIssuerNameExtensibleEnumeration" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentIssuerNameExtensibleEnumeration_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentIssuerNameExtensibleEnumeration_639174026042315233" order="1" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentTypeExtensibleEnumeration" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentTypeExtensibleEnumeration_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentTypeExtensibleEnumeration_639174026042315233" order="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfShares" xlink:label="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfShares_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanInvestmentNumberOfShares_639174026042315233" order="3" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentInvestmentExcludingPlanInterestInMasterTrustCurrentValue" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentInvestmentExcludingPlanInterestInMasterTrustCurrentValue_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentInvestmentExcludingPlanInterestInMasterTrustCurrentValue_639174026042315233" order="4" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate" xlink:label="us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanParticipantLoanInterestRate_639174026042315233" order="5" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentParticipantLoanAfterDeemedDistribution" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentParticipantLoanAfterDeemedDistribution_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentParticipantLoanAfterDeemedDistribution_639174026042315233" order="6" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestment" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestment_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestment_639174026042315233" order="7" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/ebp/elts/us-gaap-ebp-2026.xsd#us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentPartyInInterest" xlink:label="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentPartyInInterest_639174026042315233" />
    <presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap-ebp_EmployeeBenefitPlanScheduleOfAssetHeldForInvestmentLineItems_639174026042315233" xlink:to="us-gaap-ebp_EmployeeBenefitPlanAssetHeldForInvestmentPartyInInterest_639174026042315233" order="8" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" priority="1" />
  </presentationLink>
</link:linkbase>
