Hi there.
I saw this on my third Windows Server 2012 Hyper-V Failover Cluster.
There are a lot of SMB-Witness Client Error Messages in the eventlogs of all nodes.
The problem is that these are Failover Clusters without SMB Witness Shares.
They have the "classic" Witness Disk attached. Quorum Configuration is "Node and Disk Majority (Witness Disk)"
I never use Witness Shares!
OS of the nodes are Windows Server 2012. All actual windows updates are installed and I've also used the technet articles for recommended cluster and hyper-v hotfixes to get the nodes as actual as possible.
Thanks in advance
Olaf
Regards
Olaf