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The Microsoft Exchange Information Store service is unable to start because the Active Directory attribute msExchDisableUdgConversion is not valid.

The_Microsoft_Exchange_Information_Store_service_is_unable_to_start_because_the_Active_Directory_attribute_msExchDisableUdgConversion_is_not_valid (Rule)

Knowledge Base article:

Summary

The msExchDisableUdgConversion attribute can have the following values for conversion of universal distribution groups to universal security groups:

0: Always convert UDG (Universal Distribution group) to USG (Universal Security Group)

1: Only convert UDG to USG when replicating from an Exchange 5.5 server

2: Never convert

Resolutions

Correct the value of the attribute on the Exchange organization object.

External

For more information about MSExchangeIS event 9561, see:

Element properties:

TargetMicrosoft.Exchange.ExchangeComponent.IS
CategoryEventCollection
EnabledTrue
Event_ID9561
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
RemotableTrue
Alert Message
The Microsoft Exchange Information Store service is unable to start because the Active Directory attribute msExchDisableUdgConversion is not valid.
{0}
Event LogApplication

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Windows.EventProvider Default
GenerateAlert WriteAction System.Health.GenerateAlert Default

Source Code:

<Rule ID="The_Microsoft_Exchange_Information_Store_service_is_unable_to_start_because_the_Active_Directory_attribute_msExchDisableUdgConversion_is_not_valid" Enabled="onEssentialMonitoring" Target="Exch2003Core!Microsoft.Exchange.ExchangeComponent.IS" ConfirmDelivery="false" Remotable="true" Priority="Normal" DiscardLevel="100">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="EventDS" TypeID="Windows!Microsoft.Windows.EventProvider">

      <ComputerName>.</ComputerName>

      <LogName>Application</LogName>

      <Expression>

        <And>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>Channel</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>Application</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>EventDisplayNumber</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>9561</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <RegExExpression>

              <ValueExpression>

                <XPathQuery>PublisherName</XPathQuery>

              </ValueExpression>

              <Operator>MatchesWildcard</Operator>

              <Pattern>MSExchangeIS*</Pattern>

            </RegExExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">

      <Priority>1</Priority>

      <Severity>2</Severity>

      <AlertOwner>$Data/PublisherName$</AlertOwner>

      <AlertMessageId>$MPElement[Name="The_Microsoft_Exchange_Information_Store_service_is_unable_to_start_because_the_Active_Directory_attribute_msExchDisableUdgConversion_is_not_valid.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>$Data/EventDescription$</AlertParameter1>

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

  </WriteActions>

</Rule>