Clear temporary Windows Update installers

If you have problem to update Windows, e.g. it gives you 80072EFE error, it may be worthwhile to clear the Update Installers in your system and restart again. The instructions can be found at:

http://support.microsoft.com/kb/822798

Especially method 10 which tell you how to empty the software distribution folder.

After you clear the "cached" installers, you may want to restart you system before re-try the update services.