I just installed new Windows Server 2012R2 cluster with Cluster Aware Updating. I'm testing CAU before going live with this cluser.
CAU shows "No updates", but when I manually scan for updates from Server Manager -> Windows Updates, then it shows lots of updates to install.
Maybe WSUS (used by SCCM) intefears with CAU updates search? Is it possible to ignore WSUS and search updates only from Microsoft Updates (web)?