After upgrading VCM to version 5.8.1, you might face some issues while upgrading the agent to the latest version. The upgrade fails, but if you choose Install with Remove Current version from the VCM console, then the agent gets installed/upgraded to the latest version.
Note
Note that this issue has been resolved in the latest version of VCM at the time of writing this book, that is, VCM 5.8.2. This is applicable only if you are upgrading to VCM 5.8.1.
When you select a machine on the VCM console, choose the Upgrade option, and run the job, it should fail while creating the service on the managed machines and throw an error as per the following code, which is present in C:\Windows\CMAgent
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*** Installation Started 03/03/2016 3:57 *** Title: EcmComSocketListenerService Source: C:\windows\TEMP\GLB90C6.tmp | 03-03-2016 | 03:57:04 | 71680 Rem Wise Error Number: 141 Rem Function Name: EcmCreateService ...