Recently I experienced problems with VMware Update Manager. When working with the virtual infrastructure the VI client suddenly displays a message stating that my session with VMware Update Manager was no longer valid and that the plugin would be unloaded. At first I suspected that network issues were the cause of the problem as at this client site we have separate vCenter and Update Manager servers for security reasons. So I created a affinity rule keeping both servers together to rule out network issues between the two servers. Unfortunately the error messages kept popping up. I had no idea what to do and was thinking about accepting this issue but this goes against my nature and pride.

Than, last Friday I stumbled upon a VMware KB article describing my problem exactly.

Bottom line? The VMware Update Manager server was equipped with McAfee antivirus software which was scanning the Update Manager Repository. This caused the session with vCenter and the VI client to fail.

So now we excluded the Update Manager repository from on-access scanning and the randomly disconnecting sessions are gone.

Related posts:

1. VMware vCenter Site Recovery Manager Update 1 released
2. VMware vSphere Update 1 updated
3. ESXi update fails with fault.PatchIntegrityError.summary
4. First impression of the PXE Manager for vSphere
5. New ThinApp and Horizon Application Manager released

Tags: Update Manager, VMware

This entry was posted on Tuesday, December 16th, 2008 at 09:17 and is filed under Knowledgebase, VMware, VMware Update Manager. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.