Media endpoint registration failed

Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.CPS.CPS_MEDIA_ENDPOINT_REGISTRATION_FAIL (UnitMonitor)

Knowledge Base article:

Summary

The service failed to register its media communication end point.

Causes

Networking problems with the Front End server, or Front End server configuration problems.

Resolutions

Check for eventual SIP errors on the Front End servers.

Element properties:

TargetMicrosoft.LS.2019.Component.CPS
Parent MonitorSystem.Health.AvailabilityState
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateTrue
Alert SeverityError
Alert PriorityHigh
Alert Auto ResolveTrue
Monitor TypeMicrosoft.LS.2019.MonitorType.PairedEvent.Simple
RemotableTrue
AccessibilityPublic
Alert Message
[Skype] The service failed to register its media communication end point.
{0}

Please see the 'Product Knowledge' and the 'Alert Context' tab on Alert Properties view for more information.
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.CPS.CPS_MEDIA_ENDPOINT_REGISTRATION_FAIL" Accessibility="Public" Enabled="true" Target="SFBDiscovery!Microsoft.LS.2019.Component.CPS" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Microsoft.LS.2019.MonitorType.PairedEvent.Simple" ConfirmDelivery="true">
<Category>AvailabilityHealth</Category>
<AlertSettings AlertMessage="Alert_The_service_failed_to_register_its_media_communication_end_point.">
<AlertOnState>Error</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>High</AlertPriority>
<AlertSeverity>Error</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Data/Context/EventDescription$</AlertParameter1>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.CPS.CPS_MEDIA_ENDPOINT_REGISTRATION_FAIL.Success" MonitorTypeStateID="SuccessEventRaised" HealthState="Success"/>
<OperationalState ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.CPS.CPS_MEDIA_ENDPOINT_REGISTRATION_FAIL.Error" MonitorTypeStateID="ErrorEventRaised" HealthState="Error"/>
</OperationalStates>
<Configuration>
<ComputerName>$Target/Host/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>
<LogName>Lync Server</LogName>
<SuccessExpression>
<Or>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">31042</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">LS Call Park Service</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
<Expression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">31019</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">LS Call Park Service</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
</Or>
</SuccessExpression>
<ErrorExpression>
<And>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="UnsignedInteger">31024</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
<ValueExpression>
<Value Type="String">LS Call Park Service</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</ErrorExpression>
</Configuration>
</UnitMonitor>