Installing Visual Studio SP 1 on Server 2003
I was getting some strange errors when installing SP1 for Visual Studio on Server 2003. Microsoft Update said “Error Code: 0x64C Try to install the update again, or request help from one of the following resources.” After some research it appears that the problem is with Server 2003 installing large windows installer packages. Installing the fix in the following KB article fixed my problem.
http://support.microsoft.com/?kbid=925336