FrontEnd database connectivity

Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.PresenceFocus.ES_E_REG_BACKEND_FAILED_TO_ACQUIRE (UnitMonitor)

Knowledge Base article:

Summary

Failed to connect to back-end database. Skype for Business Server will continuously attempt to reconnect to the back-end. While this condition persists, incoming messages will receive error responses.

Causes

Possible issues with back-end database.

Resolutions

Ensure the back-end is functioning correctly.

Element properties:

Target

Microsoft.LS.2019.Component.PresenceFocus

Parent Monitor

System.Health.AvailabilityState

Category

AvailabilityHealth

Enabled

True

Alert Generate

True

Alert Severity

Error

Alert Priority

High

Alert Auto Resolve

True

Monitor Type

Microsoft.LS.2019.MonitorType.PairedEvent.Simple

Remotable

True

Accessibility

Public

Alert Message

[Skype] Failed to connect to back-end database. Skype for Business Server will continuously attempt to reconnect to the back-end. While this condition persists, incoming messages will receive error responses.

{0}

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

RunAs

Default

Source Code:

<UnitMonitor ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.PresenceFocus.ES_E_REG_BACKEND_FAILED_TO_ACQUIRE" Accessibility="Public" Enabled="true" Target="SFBDiscovery!Microsoft.LS.2019.Component.PresenceFocus" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Microsoft.LS.2019.MonitorType.PairedEvent.Simple" ConfirmDelivery="true">

  <Category>AvailabilityHealth</Category>

  <AlertSettings AlertMessage="Alert_Failed_to_connect_to_back_end_database.__Skype_for_Business_Server_will_continuously_attempt_to_reconnect_to_the_back_end.__While_this_condition_persists__incoming_messages_will_receive_error_responses.">

    <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.PresenceFocus.ES_E_REG_BACKEND_FAILED_TO_ACQUIRE.Success" MonitorTypeStateID="SuccessEventRaised" HealthState="Success"/>

    <OperationalState ID="Microsoft.LS.2019.Monitoring.UnitMonitor.PairedEvent.PresenceFocus.ES_E_REG_BACKEND_FAILED_TO_ACQUIRE.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">30960</Value>

                </ValueExpression>

              </SimpleExpression>

            </Expression>

            <Expression>

              <SimpleExpression>

                <ValueExpression>

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

                </ValueExpression>

                <Operator>Equal</Operator>

                <ValueExpression>

                  <Value Type="String">LS User Services</Value>

                </ValueExpression>

              </SimpleExpression>

            </Expression>

          </And>

        </Expression>

        <Expression>

          <And>

            <Expression>

              <SimpleExpression>

                <ValueExpression>

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

                </ValueExpression>

                <Operator>Equal</Operator>

                <ValueExpression>

                  <Value Type="UnsignedInteger">12288</Value>

                </ValueExpression>

              </SimpleExpression>

            </Expression>

            <Expression>

              <SimpleExpression>

                <ValueExpression>

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

                </ValueExpression>

                <Operator>Equal</Operator>

                <ValueExpression>

                  <Value Type="String">LS Server</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">30961</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

        <Expression>

          <SimpleExpression>

            <ValueExpression>

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

            </ValueExpression>

            <Operator>Equal</Operator>

            <ValueExpression>

              <Value Type="String">LS User Services</Value>

            </ValueExpression>

          </SimpleExpression>

        </Expression>

      </And>

    </ErrorExpression>

  </Configuration>

</UnitMonitor>