DFS-N: Namespace Server Synchronization

Microsoft.Windows.FileServer.DFSN.6.2.RootTarget.ResyncFailed (UnitMonitor)

This object monitors the state of synchronization between a namespace server and Active Directory Domain Services (AD DS).

Knowledge Base article:

Summary

This rule monitors the state of synchronization between a namespace server and Active Directory Domain Services (AD DS). It does this by looking for the presence of DfsSvc event 14539 in the System log in Event Viewer.

Causes

This monitor enters the Critical health state if the namespace server fails to obtain the latest namespace configuration from AD DS. This can occur if a folder in the namespace share in the local file system of the namespace server has the same name as a DFS folder (link) in the namespace.

Resolutions

Delete the conflicting folder

Check if there is a folder in the namespace share (by default C:\DFSRoots\<namespace>\) that has the same name as a DFS folder in the namespace. If there is, delete the conflicting folder in the local file system.

Verification

To test communication with AD DS, use the dfsdiag /testdcs command. Confirm that all domain controllers report healthy results, and then reset the health state of this monitor to Healthy.

Additional

DFS Namespaces Event 14539 (http://go.microsoft.com/fwlink/?LinkId=186553)

Element properties:

Target

Microsoft.Windows.FileServer.DFSN.6.2.RootTarget

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.Windows.SingleEventLogManualReset2StateMonitorType

Remotable

True

Accessibility

Public

Alert Message

DFS-N: Namespace Server Synchronization Failed

{0}

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.Windows.FileServer.DFSN.6.2.RootTarget.ResyncFailed" Accessibility="Public" Enabled="true" Target="Microsoft.Windows.FileServer.DFSN.6.2.RootTarget" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Windows!Microsoft.Windows.SingleEventLogManualReset2StateMonitorType" ConfirmDelivery="true">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.Windows.FileServer.DFSN.6.2.RootTarget.ResyncFailed_AlertMessageResourceID">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

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

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="EventRaised" MonitorTypeStateID="EventRaised" HealthState="Error"/>

    <OperationalState ID="ManualResetEventRaised" MonitorTypeStateID="ManualResetEventRaised" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

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

    <LogName>System</LogName>

    <Expression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="UnsignedInteger">14539</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <RegExExpression>

            <ValueExpression>

              <XPathQuery Type="String">PublisherName</XPathQuery>

            </ValueExpression>

            <Operator>ContainsSubstring</Operator>

            <Pattern>DfsSvc</Pattern>

          </RegExExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery Type="String">Params/Param[1]</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="String">$Target/Property[Type="DFSNLib!Microsoft.Windows.FileServer.DFSN.RootTarget"]/RootName$</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <Or>

            <Expression>

              <SimpleExpression>

                <ValueExpression>

                  <XPathQuery Type="String">LoggingComputer</XPathQuery>

                </ValueExpression>

                <Operator>Equal</Operator>

                <ValueExpression>

                  <Value Type="String">$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetbiosComputerName$</Value>

                </ValueExpression>

              </SimpleExpression>

            </Expression>

            <Expression>

              <SimpleExpression>

                <ValueExpression>

                  <XPathQuery Type="String">LoggingComputer</XPathQuery>

                </ValueExpression>

                <Operator>Equal</Operator>

                <ValueExpression>

                  <Value Type="String">$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/PrincipalName$</Value>

                </ValueExpression>

              </SimpleExpression>

            </Expression>

          </Or>

        </Expression>

      </And>

    </Expression>

  </Configuration>

</UnitMonitor>