Download Here List of Notable Changes This service pack contains compatibility fixes for many of the drivers Vista users have been having difficulty with, according to Microsoft.

If you start experiencing STOP errors after a recent Windows Update and are running AVG Anti-Rootkit or spyware, KB938371 may be the cause of your troubles. This update, a patch for the Windows Trusted Installer, has reportedly caused error 0x0000007E in avgarkt.sys and 0x000000D1 after uninstallation of Anti-Rootkit if Anti-Spyware is left in place. It can apparently cause a cascading failure through these particular products and possibly AVG's Antivirus as well. It also happens to be a prerequisite to installing Service Pack 1 RC1 for Vista.