Recently we have re-instated our Primary DNS after system failure, that part of it is fine. However we also moved WSUS from our Secondary DNS (was the only DNS until Primary was Re-instated) to another server. I changed our SUS group policy to point towards the new server however our XP (SP3)machines still are looking at the old SUS server for their updates. Ie HKLM\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate still points to the old server. I have tried gpupdate /force but it 'appears' to do nothing, even though it says user and computer policy refresh complete. Furthermore to this nslookup on the XP machines still shows the Secondary DNS as the primary. Neither of these problems appear on our Windows 2000 (SP4) machines. I still fairly new to group policy and WSUS, any help would be greatly appreciated.