Hi,
Just recently I have been experiencing a problem where all the virtual hosts I am monitoring in SCVMM will go from responding to Needs Attention and all the VMs have the status of Host Not Responding.
The errors in the job log are all the same for each of the virtual hosts (there are 3 in a cluster).
Error (2927)
A Hardware Management error has occurred trying to contact server RC-HYPERV-1.riddlesdown.local .
Unknown error (0x803381a6)
Recommended Action
Check that WinRM is installed and running on server RC-HYPERV-1.riddlesdown.local. For more information use the command "winrm helpmsg hresult".
I've checked the WinRM service on all servers and it is started on all of them, there are no firewalls between the SCVMM server and cluster nodes, VMM service account is a member of the local administrators on the cluster nodes. I can't see anything in any of the events logs around the time everything has stopped.
I can fix it by forcibly stopping the WinRM service (when I try to stop it normally it times out), restarting the WinRM and VMM agent services, then refreshing the host cluster.
Any ideas why all the nodes suddenly stop responding and what I can do about fixing it?