I cannot open .msu files on my Vista 32-bit. I have tried every forum. No solution. I have tried to associate this file type with the 'Windows Update Standalone
Installer'.
Right click the .MSU file and select Open With.
Click the Browse Button.
Navigate to C:\Windows\System32.
Select the 'wusa.exe' file.
Select Open.
No luck. How do I recover the extension from my Vista SP1 Installation DVD.