KCC cannot compute a replication path

KCC_cannot_compute_a_replication_path_5_Rule (Rule)

Knowledge Base article:

Summary

The Knowledge Consistency Checker (KCC) has detected problems with a directory partition.

Sample Event:

The Knowledge Consistency Checker (KCC) has detected problems with the following directory partition.

Directory partition: %1

Causes

There is insufficient site connectivity information in Active Directory Sites and Services for the KCC to create a spanning tree replication topology. Or, one or more domain controllers with this directory partition are unable to replicate the directory partition information. This is probably due to inaccessible domain controllers.

Resolutions

Use Active Directory Sites and Services to perform one of the following actions:

Publish sufficient site connectivity information so that the KCC can determine a route by which this directory partition can reach this site. This is the preferred option.
Add a Connection object to a domain controller that contains the directory partition in this site from a domain controller that contains the same directory partition in another site.

If neither of the Active Directory Sites and Services tasks corrects this condition, see previous events logged by the KCC that identify the inaccessible domain controllers.

External

For more information, see:

Element properties:

Target

Microsoft.Windows.Server.2003.AD.DomainControllerRole

Category

EventCollection

Enabled

True

Event_ID

1311

Event Source

NTDS KCC

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Remotable

True

Alert Message

KCC cannot compute a replication path

{0}

Event Log

Directory Service

Comment

Mom2005ID='{D96BE5AD-2166-4A16-BCC0-13047491D064}';MOM2005GroupID=

Member Modules:

ID	Module Type	TypeId	RunAs
DS	DataSource	Microsoft.Windows.EventProvider	Default
RepeatedDataCondition	ConditionDetection	ConsolidatorConditionDetection	Default
CollectEventData	WriteAction	Microsoft.SystemCenter.CollectEvent	Default
CollectEventDataWarehouse	WriteAction	Microsoft.SystemCenter.DataWarehouse.PublishEventData	Default
GenerateAlert	WriteAction	System.Health.GenerateAlert	Default

Source Code:

<Rule ID="KCC_cannot_compute_a_replication_path_5_Rule" Comment="Mom2005ID='{D96BE5AD-2166-4A16-BCC0-13047491D064}';MOM2005GroupID=" Enabled="onEssentialMonitoring" Target="AD2003Core!Microsoft.Windows.Server.2003.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>1311</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>PublisherName</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>NTDS KCC</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <ConditionDetection ID="RepeatedDataCondition" TypeID="ConsolidatorConditionDetection">

    <IntervalSeconds>3600</IntervalSeconds>

    <RepeatCount>3</RepeatCount>

    <EventOriginId>$Target/Id$</EventOriginId>

    <PublisherId>$MPElement$</PublisherId>

    <PublisherName>$data/Context/DataItem/PublisherName$</PublisherName>

    <Channel>$data/Context/DataItem/Channel$</Channel>

    <LoggingComputer>$data/Context/DataItem/LoggingComputer$</LoggingComputer>

    <EventNumber>$data/Context/DataItem/EventNumber$</EventNumber>

    <EventCategory>$data/Context/DataItem/EventCategory$</EventCategory>

    <EventLevel>$data/Context/DataItem/EventLevel$</EventLevel>

    <UserName>$data/Context/DataItem/UserName$</UserName>

    <Description>$data/Context/DataItem/EventDescription$</Description>

    <Params/>

  </ConditionDetection>

  <WriteActions>

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

      <Priority>1</Priority>

      <Severity>2</Severity>

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

      <AlertMessageId>$MPElement[Name="KCC_cannot_compute_a_replication_path_5_Rule.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

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

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

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

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

  </WriteActions>

</Rule>