I uninstalled VMM agent on a host and tried to reinstall it, however I get the message "Another Virtual Machine Manager agent package is already installed. You must uninstall the existing agent first."
I'm running VMM 2012 R2 UR 3 on Server 2012 R2, the host in question is running Server Core 2012 R2. VMM agent version is 3.2.7672.0.
I looked at the install log and see "1: !VMM_Error! 2: 3":
MSI (s) (C4:6C) [10:30:15:517]: Doing action: CheckAgentPackageExists
Action 10:30:15: CheckAgentPackageExists.
Action start 10:30:15: CheckAgentPackageExists.
MSI (s) (C4:44) [10:30:15:548]: Invoking remote custom action. DLL: C:\Windows\Installer\MSI1815.tmp, Entrypoint: CheckAgentPackageExists
1: !VMM_Error! 2: 3
MSI (s) (C4!C8) [10:30:15:564]: PROPERTY CHANGE: Adding CAERROR property. Its value is '3'.
Action ended 10:30:15: CheckAgentPackageExists. Return value 1.
MSI (s) (C4:6C) [10:30:15:580]: Doing action: PreAgentInstallChecks
Action 10:30:15: PreAgentInstallChecks.
Action start 10:30:15: PreAgentInstallChecks.
MSI (s) (C4:D4) [10:30:15:595]: Invoking remote custom action. DLL: C:\Windows\Installer\MSI1844.tmp, Entrypoint: PreAgentInstallChecks
Action ended 10:30:15: PreAgentInstallChecks. Return value 1.
I tried reinstalling because I was getting the following error on the host in the VMM console:
Error (20513)
The VMM management server cannot retrieve performance data for the computer. This issue may occur if the performance counter provider in the Virtual Machine Manager agent is corrupted.
Recommended Action
Restart the System Center Virtual Machine Manager Agent service on the computer. This automatically restarts the performance provider. If the error persists, reinstall the VMM agent on the computer.