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virtual infrastructure the VI client suddenly displays a message stating that my session with VMware Update Manager was no longer valid and that the plugin would be unloaded.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. (more…)

Yesterday I installed 5 new ESXi3.5 host at a client site, installed VirtualCenter and VMware Update Manager. I configured all hosts with storage, networking, licensing and ntp settings. All looked fine and ready to rock. One last action before starting with our test plan was to update all hosts to the latest patch level and that’s where the ‘fun‘ started.

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