If Visual Studio 2005 Service Pack 1 fails to install, you might find additional .msp files under %WINDIR%\Installer for each failed attempt. You should not simply delete these patches , however, because if one of the patches was applied successfully...

When you install a patch using Windows Installer, the .msp file is cached in the %WINDIR%\Installer directory. This accounts for some of the space required by Visual Studio 2005 Service Pack 1 . A single patch is cached only once regardless to how many...

There are several known issues when installing Visual Studio 2005 Service Pack 1 . I've documented these below and, when possible, have included workarounds and status on any pending fixes. Contents Error 1718.File '...' was rejected by digital...

When installing Visual Studio 2005 Service Pack 1 , you may see an error like the following (file name will vary): Error 1718.File D:\WINDOWS\Installer\50baad.msp was rejected by digital signature policy. Knowledge Base article 925336 had originally...