"Microsoft WSUS Blocked from Deploying Security Updates to clients with Microsoft Office 2003." That directly from Microsofts Website.
Here is a nasty little tidbit from Microsoft I found today. If you are a Windows administrator, you are using Microsoft Windows Server Update Services (WSUS) Version 3.0 with or without SP1 AND you are running Office 2003 in your environment… read on.
Basically there is a bug that was found some time after the June 10, 2008 security updates that Microsoft sent out. This bug breaks communication between your clients and your WSUS servers. There is no fix for this yet but Microsoft has published a work around which you can find at the link below. The Long and short of it is: Find Office 2003 Service Pack 1 with the specific update id of “D359F493-0AAD-43FA-AF5C-6763326CD98F” in your WSUS servers, set it to Declined, and apply your changes. Then force your clients to detect updates using the “wuauclt.exe /detectnow” command from command line.
John "Mike" Wright