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  <xs:element id="morn_SegmentGeographicalGroupOfOtherCountriesMember" abstract="true" name="SegmentGeographicalGroupOfOtherCountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_A2022ShareRepurchaseProgramMember" abstract="true" name="A2022ShareRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_WealthAdvisorsMember" abstract="true" name="WealthAdvisorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_SmartXMember" abstract="true" name="SmartXMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_InvestmentsInUnconsolidatedEntitiesTable" abstract="true" name="InvestmentsInUnconsolidatedEntitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="morn_SBIMember" abstract="true" name="SBIMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_InvestmentsInUnconsolidatedEntitiesLineItems" abstract="true" name="InvestmentsInUnconsolidatedEntitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="morn_LesseeOperatingLeasesNotYetCommencedAggregateFutureLeaseObligations" abstract="false" name="LesseeOperatingLeasesNotYetCommencedAggregateFutureLeaseObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_WeightedAverageRemainingLeaseTermAbstract" abstract="true" name="WeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="morn_WeightedAverageDiscountRateAbstract" abstract="true" name="WeightedAverageDiscountRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="morn_RestrictedStockUnitsandPerformanceShareAwardsMember" abstract="true" name="RestrictedStockUnitsandPerformanceShareAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_UnrecognizedTaxBenefitsIncludedInCurrentLiabilities" abstract="false" name="UnrecognizedTaxBenefitsIncludedInCurrentLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_UnrecognizedTaxBenefitsIncludedInNonCurrentLiabilities" abstract="false" name="UnrecognizedTaxBenefitsIncludedInNonCurrentLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_TotalLiabilityForUnrecognizedTaxBenefits" abstract="false" name="TotalLiabilityForUnrecognizedTaxBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_CashCashEquivalentsandInvestmentsMember" abstract="true" name="CashCashEquivalentsandInvestmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_EffectiveIncomeTaxRateReconciliationIncreaseDecreaseFromPriorYearPercentTaxes" abstract="false" name="EffectiveIncomeTaxRateReconciliationIncreaseDecreaseFromPriorYearPercentTaxes" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="morn_TotalLiabilityForUnrecognizedTaxBenefitsPeriodIncreaseDecrease" abstract="false" name="TotalLiabilityForUnrecognizedTaxBenefitsPeriodIncreaseDecrease" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_EffectiveIncomeTaxRateReconciliation" abstract="false" name="EffectiveIncomeTaxRateReconciliation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="morn_IncomeTaxExpenseBenefitChangeFromPriorYear" abstract="false" name="IncomeTaxExpenseBenefitChangeFromPriorYear" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_CurrentAndDeferredTaxBenefitsRelatedToRetrospectiveTaxElection" abstract="false" name="CurrentAndDeferredTaxBenefitsRelatedToRetrospectiveTaxElection" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_CurrentTaxBenefitsRelatedToRetrospectiveTaxElection" abstract="false" name="CurrentTaxBenefitsRelatedToRetrospectiveTaxElection" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_UndistributedEarningsOfForeignSubsidiariesNotPermanentlyReinvested" abstract="false" name="UndistributedEarningsOfForeignSubsidiariesNotPermanentlyReinvested" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_ForeignEarningsRepatriatedNetOfWitholdingTaxes" abstract="false" name="ForeignEarningsRepatriatedNetOfWitholdingTaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_DecreaseInIncomeTaxExpenseUponRecognitionOfGrossUnrecognizedTaxBenefits" abstract="false" name="DecreaseInIncomeTaxExpenseUponRecognitionOfGrossUnrecognizedTaxBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_A2025ShareRepurchaseProgramMember" abstract="true" name="A2025ShareRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="morn_StockRepurchasedCumulativeShares" abstract="false" name="StockRepurchasedCumulativeShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="morn_StockRepurchasedCumulativeValue" abstract="false" name="StockRepurchasedCumulativeValue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_TotalStockRepurchasedUnderCurrentProgramShares" abstract="false" name="TotalStockRepurchasedUnderCurrentProgramShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="morn_TotalStockRepurchasedUnderCurrentProgramAmount" abstract="false" name="TotalStockRepurchasedUnderCurrentProgramAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="morn_DescriptionAxis" abstract="true" name="DescriptionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="morn_DescriptionDomain" abstract="true" name="DescriptionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
