In have WSUS 3.0 SP2 on W2K8R2 SP1. When I Check for updates using the WUAgent on Windows Server 2012 often I'll get "no updates available" even though I have approved them for WS2012. If I stop the WUAgent, delete the contents of \windows\softwaredistribution\datastore, restart the agent, then check for updates the updates appear and can be installed.
If I approve updates then leave it overnight, WS2012 still fails to find any updates.
Has anyone else got WS2012 client to work successfully with WSUS 3.0 SP2? If so, how?