Cluster Aware Updating is Failing with Sep 2025 Updates

We have a failover cluster running on Server 2019, providing file shares. We have been using Cluster Aware Updating with no issues for years now. Suddenly with the Sep 2025 updates it's failing. 

We did replace out WSUS server for Sep updates, and discovered the cluster nodes had the old server IP configured for WSUS, instead of the DNS alias. But even after correcting that and rebooting both nodes, it still fails. 

The logs for it when it tries to run "

Could not initialize internal Windows PowerShell: (RemoteException) Running startup script threw an error: The specified module 'Hyper-V' was not loaded because no valid module file was found in any module directory.."
We of course do not have anything HyperV running. I believer the underlying issue is the beginning of that message "Could not initialize internal Windows PowerShell"
I have checked that WMI and WRM are running on both nodes. When running a status check within the CAU GUI, it gives all green checks. Nothing has changed, other than that WSUS server update.