I have a WSUS 3.0 server running on Server 2003 and all clients are XP Pro either SP2, or SP3. A few but not all clients are not updating correctly. They are assigned the SUS server in a GPO, and show up on the SUS server. The computer has been assigned to the necessary groups that have updates assigned to them. The client is reporting status in the SUS console and shows which updates are needed. However the client is not updating. I ran wuauclt /detectnow to manually initiate an update, and stopped the service reregistered the wups2.dll, and restarted the service. The client has the correct registry settings. A couple of clients are just not updating.