Catalog Synchronization

Microsoft.Windows.Server.UpdateServices.2012.Server.CatalogSyncState (UnitMonitor)

Knowledge Base article:

Summary

WSUS catalog synchronization depends on connectivity to the upstream server or Microsoft Update.

Resolutions

The last catalog synchronization with the upstream WSUS server failed.

Possible resolutions include:

Intermittent network connectivity loss to the upstream server. Review event logs for possible sources of the service disruption.

Check the update server and proxy settings in the WSUS administration console..

Start WSUS 3.0: Click Start, click Administrative Tools, and then click Microsoft Windows Server Update Services v3.0.
Select Options.
Click Update Source and Proxy Server.
Review update source settings and make changes as needed.
Review proxy server settings and make changes as needed.
Click Synchronization Results.
In the Action pane, click Synchronize Now.

The last catalog synchronization happened some time ago or was never performed.

This is a reminder to synchronize the server on a regular basis if the synchronization schedule is set to manual.
Start WSUS 3.0: Click Start, click Administrative Tools, then click Microsoft Windows Server Update Services v3.0.
Click Synchronization Results
In the Action pane, click Synchronize Now.

Additional

Look for the corresponding error event

Open a command window.
Type cd <WSUSInstallDir>\Tools
Type wsusutil checkhealth
Type eventvwr
Review the Application log for the most recent events from source Windows Server Update Services and event id 10020.

Element properties:

Target

Microsoft.Windows.Server.UpdateServices.2012.Server

Parent Monitor

Microsoft.Windows.Server.UpdateServices.2012.Server.CoreRollup

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

Error

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.Windows.3SingleEventLog3StateUnitMonitorType

Remotable

True

Accessibility

Public

Alert Message

Catalog Synchronization

Suspicious catalog synchronization state

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.Windows.Server.UpdateServices.2012.Server.CatalogSyncState" Accessibility="Public" Enabled="true" Target="Microsoft.Windows.Server.UpdateServices.2012.Server" ParentMonitorID="Microsoft.Windows.Server.UpdateServices.2012.Server.CoreRollup" Remotable="true" Priority="Normal" TypeID="Windows!Microsoft.Windows.3SingleEventLog3StateUnitMonitorType" ConfirmDelivery="false">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.Windows.Server.UpdateServices.2012.Server.CatalogSyncState.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="CatalogSyncError" MonitorTypeStateID="FirstEventRaised" HealthState="Error"/>

    <OperationalState ID="CatalogSyncWarn" MonitorTypeStateID="SecondEventRaised" HealthState="Warning"/>

    <OperationalState ID="CatalogSyncOK" MonitorTypeStateID="ThirdEventRaised" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

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

    <FirstLogName>Application</FirstLogName>

    <FirstExpression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery>PublisherName</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value>Windows Server Update Services</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery>EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value>10022</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </And>

    </FirstExpression>

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

    <SecondLogName>Application</SecondLogName>

    <SecondExpression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery>PublisherName</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value>Windows Server Update Services</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery>EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value>10021</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </And>

    </SecondExpression>

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

    <ThirdLogName>Application</ThirdLogName>

    <ThirdExpression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

              <XPathQuery>PublisherName</XPathQuery>

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value>Windows Server Update Services</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <RegExExpression>

            <ValueExpression>

              <XPathQuery>EventDisplayNumber</XPathQuery>

            </ValueExpression>

            <Operator>MatchesRegularExpression</Operator>

            <Pattern>^(10020|501|10000)$</Pattern>

          </RegExExpression>

        </Expression>

      </And>

    </ThirdExpression>

  </Configuration>

</UnitMonitor>