Originally Posted by jireejoo
Can you please follow the advice of my colleagues above. It is indeed a very strange issue.
There is a rare Windows bug which someone may find on Google (hence I shall mention it here) which means that an update which shows as successfully installed is not actually installed, but is repeatedly re-offered. The fix is very simple (reset the transaction log files through a single command line entry) but this does not truly apply in this case, since SP2 has been offered.
What I am saying is that since SP2 has been offered, there is no known bug which causes SP1 not to have been installed.
It is certainly an interesting issue.
Do you get offered any more updates through Windows Update?
Do you remember what happened when you tried to install SP1 last time?
Thanks a lot!