When we start Server Manager on Server 2012 the flag lights up Red almost immediately with the error:
Configuration refresh failed with the following error: Invalid class.
What we’ve tried so far:
sfc /scannow [reported no errors]
Dism /Online /Cleanup-Image /RestoreHealth [Completed to 100% ]
Get-windowsfeature returns: Invalid class
This is a file/print server, running DFS. When running DFS Management from Server Manager we don’t see the Replication section at the bottom. We can run MMC and manually add DFS Management then Replication shows up.
Where do I look to start diagnosing this error?