I am trying to upgrade the VMM agent on SCVMM 2012 from 3.1.6011.0 to 3.1.6027.0. When I run the update I get 'access denied" on the VMM console. In the system error log on the Hyper-V server is see error message:
The VMMAgentInstaller service terminated with service-specific error %%-2146041839.
I verified that the userid I was using was in the local administrator's group. I tried using other userid's and got the same message. I successfully update the agent on five other servers with no problem, and I can't see any difference between the servers.