I have a Windows Server 2008 R2 server running Exchange 2010. I ran 26 updates tonite. Rebooted all was well. After a few minutes the WSUS server popped up and said that I had 1 new update to run. It is indicating I need to run 2008 Server SP1. Ummm why would it not have had Windows 2008 SP1 as a previous option? I dont think it is thinking correctly. I run winver and it shows w2k8 R2 but no SP1. I am almost positive I had SP1 on this server. Doesnt make any sense in the 3 years it has been running that it would pop up now. All my other servers are running SP1. Has anyone heard of a WSUS flaw that would revert back to a previous install? This makes me way behind. I dont trust it.