I’ve been installing a couple of servers lately with SQL 2005 on them. When doing the Windows Update thing to get all patches on them I noticed that Visual Studio 2005 SP1 is a High Priority fix that wants to be installed. I was however unable to install this 400 Mb update.

To fix this I found a hotfix that allows you to install large Windows Installer packages and patches.

KB925336 – "FIX: Error message when you try to install a large Windows Installer package or a large Windows Installer patch package in Windows Server 2003 or in Windows XP: "Error 1718. File was rejected by digital signature policy""