I have recently taken receipt of a new exchange 2003 server running on server 2003 sp1. Mail is working fine for XP clients, but the OWA is broken for Vista clients.
So I trawled the M$ KB's and found the update. However, I do not have permission to install the update.
I have tried as Local Administrator, Domain Administrator, Service account with all admin rights (exchange & enterprise) I even used the RUN AS. I still get the same message. It says I do not have permission to install the update.
I also tried to install SP2 for server 2003 and get the same error. I have checked the SECPOL and there is nothing immediately obvious in there, I have also checked it against known issues in the M$ KB's.
What else could be stopping me from installing this hotfix, or SP2?