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Schema cache load failed to convert the string default SD on class-schema object

Schema_cache_load_failed_to_convert_the_string_default_SD_on_class_schema_object_5_Rule (Rule)

Knowledge Base article:

Summary

The schema cache load for the Active Directory® directory service could not convert the default security descriptor on the schema class object, and as a result the schema cache load will fail.

Sample Event:

The Active Directory schema cache load could not convert the default security descriptor on the following schema class object.

Security descriptor: %1

Schema class object: %2

As a result, the schema cache load will fail.

Additional Data

Error value: %3 %4

Resolutions

Verify that the default security descriptor on the schema class object is valid. If it is not valid, change it to a value that is valid.

External

For more information, see:

Element properties:

TargetMicrosoft.Windows.Server.2008.AD.DomainControllerRole
CategoryEventCollection
EnabledTrue
Event_ID1523
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
RemotableTrue
Alert Message
Schema cache load failed to convert the string default SD on class-schema object
{0}
Event LogDirectory Service
CommentMom2005ID='{EA555FDA-0442-4D21-896D-280B8B14934F}';MOM2005GroupID=

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.Windows.EventProvider Default
GenerateAlert WriteAction System.Health.GenerateAlert Default
WriteToDB WriteAction Microsoft.SystemCenter.CollectEvent Default
WriteToDW WriteAction Microsoft.SystemCenter.DataWarehouse.PublishEventData Default

Source Code:

<Rule ID="Schema_cache_load_failed_to_convert_the_string_default_SD_on_class_schema_object_5_Rule" Comment="Mom2005ID='{EA555FDA-0442-4D21-896D-280B8B14934F}';MOM2005GroupID=" Enabled="onEssentialMonitoring" Target="AD2008Core!Microsoft.Windows.Server.2008.AD.DomainControllerRole" ConfirmDelivery="true" Remotable="true" Priority="Normal" DiscardLevel="100">

  <Category>EventCollection</Category>

  <DataSources>

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

      <ComputerName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>

      <LogName>Directory Service</LogName>

      <Expression>

        <And>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>Channel</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>Directory Service</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>EventDisplayNumber</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>1523</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <WriteActions>

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

      <Priority>1</Priority>

      <Severity>2</Severity>

      <AlertOwner/>

      <AlertMessageId>$MPElement[Name="Schema_cache_load_failed_to_convert_the_string_default_SD_on_class_schema_object_5_Rule.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

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

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

    <WriteAction ID="WriteToDB" TypeID="SC!Microsoft.SystemCenter.CollectEvent"/>

    <WriteAction ID="WriteToDW" TypeID="SCDW!Microsoft.SystemCenter.DataWarehouse.PublishEventData"/>

  </WriteActions>

</Rule>