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Agent Installer service already exists

Microsoft.SystemCenter.AgentManager.AgentInstallerAlreadyExists.Monitor (UnitMonitor)

Monitor for when the management server detects that another "push" agent installation is already running.

Knowledge Base article:

Summary

The agent installer service already exists.

Causes

This service is installed to initiate and monitor the installation of the agent on the target computer machine. If this service already exists, an installation could already be underway or the service was orphaned during a failed install or uninstall of the agent.

Resolutions

Ensure there is no other pending installation on the target computer. If you suspect that the service was orphaned from a failed installation, delete the service. You can use sc.exe that is available on WinXPSP2, Windows 2003 SP1 Server, or the Windows Resource Kit.

For more information on troubleshooting agent installation, see Troubleshooting Issues When You Use the Discovery Wizard to Install an Agent(http://go.microsoft.com/fwlink/?LinkId=181932).

Element properties:

TargetMicrosoft.SystemCenter.AgentManager
Parent MonitorMicrosoft.SystemCenter.AgentManager.ConfigHealthRollup
CategoryConfigurationHealth
EnabledTrue
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor TypeMicrosoft.SystemCenter.AgentManager.AgentManagerFailureMonitor
RemotableTrue
AccessibilityPublic
Alert Message
Failed Agent Push/Repair - Agent Installer service already exists
An agent "push" install or repair was attempted and failed. The task was run from the management server {1} against the computer {0}.

Additional details:
Task Start Time: {3} UTC
Task End Time: {4} UTC

Full Event Description: {5}
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.SystemCenter.AgentManager.AgentInstallerAlreadyExists.Monitor" Accessibility="Public" Enabled="true" Target="SCLibrary!Microsoft.SystemCenter.AgentManager" ParentMonitorID="Microsoft.SystemCenter.AgentManager.ConfigHealthRollup" Remotable="true" Priority="Normal" TypeID="Microsoft.SystemCenter.AgentManager.AgentManagerFailureMonitor" ConfirmDelivery="true">

  <Category>ConfigurationHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SystemCenter.AgentManager.AgentInstallerAlreadyExists.Monitor.AlertMessage">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="SCLibrary!Microsoft.SystemCenter.UserActionManager"]/TargetDevicePrincipalName$</AlertParameter1>

      <AlertParameter2>$Target/Property[Type="SCLibrary!Microsoft.SystemCenter.UserActionManager"]/ManagementServerName$</AlertParameter2>

      <AlertParameter3>$Target/Property[Type="SCLibrary!Microsoft.SystemCenter.UserActionManager"]/PendingStateType$</AlertParameter3>

      <AlertParameter4>$Target/Property[Type="SCLibrary!Microsoft.SystemCenter.AgentManager"]/TaskStartTime$</AlertParameter4>

      <AlertParameter5>$Target/Property[Type="SCLibrary!Microsoft.SystemCenter.AgentManager"]/TaskEndTime$</AlertParameter5>

      <AlertParameter6>$Data/Context/Property[@Name="Message"]$</AlertParameter6>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="AgentManagerFailure" MonitorTypeStateID="AgentInstallationFailure" HealthState="Error"/>

    <OperationalState ID="AgentManagerSuccess" MonitorTypeStateID="AgentInstallationSuccess" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

    <EventId>10619</EventId>

    <TaskStartTime>$Target/Property[Type="SCLibrary!Microsoft.SystemCenter.AgentManager"]/TaskStartTime$</TaskStartTime>

    <TaskEndTime>$Target/Property[Type="SCLibrary!Microsoft.SystemCenter.AgentManager"]/TaskEndTime$</TaskEndTime>

  </Configuration>

</UnitMonitor>