I have a Windows Server 2012R2 cluster for Hyper-V. I'm attempting to migrate all VMs to new Hosts, so I'm prepping the new Hosts to join the cluster. One existing host erroneously reports that its missing a TON of updates, though when I search Installed Updates on that host, they're all installed already. This is throwing off the new Hosts I'm validating for cluster membership, showing that all those same updates are also missing on the new Hosts as well. I've run get-hotfix on all the new Hosts, as well as 2 of the exisitng, and manually compared, only to find that even the existing cluster nodes are out of sync on installed updates, even though Cluster Validation Wizard reports them as matching. I'm guessing that my Cluster Validation Wizard is not gathering correct information on all Hosts, leading me to this issue.
So, how do I fix this? What am I missing? I"m logged in as a Domain Admin when running the validation. I've already added the cluster network name to each node in AD > Security tab with full permissions. How does the Cluster Validation Wizard obtain the information on updates and compare them? Is there a stand-alone tool I can use to substitute this portion of the wizard?