I've tried rebuild WMI already before the session - it did't help.
Aleksandr tried really hard.
He tried rebuilding WMI, WMIDiags, a WMI diag/debug tool (I don't remember the name and can't find it), sfc, different versions of .NET framework even Endpoint backup v1.5 and a lot of other things (registry, logs, etc.).
In the end of the session he suggested running chkdsk /f /r, which I did, but it didn't help.
It seems to me that the problem is in the Windows WMI not in VAW
The interesting thing is, I have a second almost identical server, where the VAW runs without a problem.
I would like to ask for advice - should I close the case, even when it's not solved?