Application Discovery And Load Balancer Service Application Are Not Available

Microsoft.SharePoint.2016.SPServiceInstance.Topology.EnumerateSharedServiceApplications (UnitMonitor)

A critical state of this Monitor indicates that the Application Discovery and Load Balancer Service Application are unable to retrieve the list of published service applications from the remote farm.

Knowledge Base article:

Summary

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Causes

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Element properties:

Target

Microsoft.SharePoint.2016.SPServiceInstance.Topology

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

MatchMonitorHealth

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.Windows.SingleEventLogManualReset2StateMonitorType

Remotable

True

Accessibility

Public

Alert Message

SharePoint: Application Discovery And Load Balancer Service Application Are Not Available

A critical incident has occurred where the Application Discovery and Load Balancer Service Application are unable to retrieve the list of published service applications from the remote farm.
Event ID: {0}
Event Description: {1}

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.SharePoint.2016.SPServiceInstance.Topology.EnumerateSharedServiceApplications" Accessibility="Public" Enabled="true" Target="MOSS16Core!Microsoft.SharePoint.2016.SPServiceInstance.Topology" ParentMonitorID="Health!System.Health.AvailabilityState" Priority="Normal" TypeID="Windows!Microsoft.Windows.SingleEventLogManualReset2StateMonitorType">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SharePoint.2016.SPServiceInstance.Topology.EnumerateSharedServiceApplications_AlertMessageResourceID">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Data/Context/EventDisplayNumber$</AlertParameter1>

      <AlertParameter2>$Data/Context/EventDescription$</AlertParameter2>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

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

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

  </OperationalStates>

  <Configuration>

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

    <LogName>Microsoft-SharePoint Products-Shared/Operational</LogName>

    <Expression>

      <And>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

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

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="UnsignedInteger">8071</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

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

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="String">Microsoft-SharePoint Products-SharePoint Foundation</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </And>

    </Expression>

  </Configuration>

</UnitMonitor>