Getting Error code 80096002?
Seeing this in your Group Policy Operational event log?
You (or your network administrator) might need to update your WSUS server.
The following update commonly needs to be applied to WSUS servers before they can service Windows 8 or Server 2012 clients: http://blogs.technet.com/b/sus/archive/2012/09/04/an-update-for-windows-server-update-services-3-0-service-pack-2-is-available-kb2734608.aspx