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Excel Calculation Services Error Communicating With Machine

Microsoft.SharePoint.Server.2010.SPServiceInstance.Excel.ErrorCommunicatingWithECS (UnitMonitor)

A warning state of this Monitor indicates that the front-end Web server attempts to establish a connection to a specific Excel Calculation Services machine, but a communication error occurred. Traffic will be load balanced to another server if one is available.

Knowledge Base article:

Summary

To get the most current Knowledge Article from the Microsoft TechNet site, visit:

http://go.microsoft.com/fwlink/?LinkId=142734

Causes

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Element properties:

TargetMicrosoft.SharePoint.Server.2010.SPComponentInstance.ExcelPage
Parent MonitorSystem.Health.AvailabilityState
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateFalse
Alert Auto ResolveTrue
Monitor TypeMicrosoft.SharePoint.Foundation.2010.RepeatedEventLogManualReset2StateMonitorType
RemotableTrue
AccessibilityPublic
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.SharePoint.Server.2010.SPServiceInstance.Excel.ErrorCommunicatingWithECS" Accessibility="Public" Enabled="true" Target="Microsoft.SharePoint.Server.2010.SPComponentInstance.ExcelPage" ParentMonitorID="Health!System.Health.AvailabilityState" Priority="Normal" TypeID="WSS!Microsoft.SharePoint.Foundation.2010.RepeatedEventLogManualReset2StateMonitorType">

  <Category>AvailabilityHealth</Category>

  <OperationalStates>

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

    <OperationalState ID="RepeatedEventRaised" MonitorTypeStateID="RepeatedEventRaised" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

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

    <RepeatedLogName>Application</RepeatedLogName>

    <RepeatedExpression>

      <And>

        <Expression>

          <RegExExpression>

            <ValueExpression>

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

            </ValueExpression>

            <Operator>MatchesRegularExpression</Operator>

            <Pattern>^(5231|5239|5240)$</Pattern>

          </RegExExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

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

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="String">Microsoft-SharePoint Products-Excel Services Application</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </And>

    </RepeatedExpression>

    <Interval>600</Interval>

    <Count>5</Count>

  </Configuration>

</UnitMonitor>