Friday, June 19, 2009

Disabling Windows Update in Windows Server 2008 and Vista

This will come in handy for those of us who don't want MS installing patches at will on our clusters: I spent a long time looking for a MS-validated solution and came up empty-handed. Sysinternal's process monitor came through FTW:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\AUOptions
Settings are as follows:
1. Don't check ever. (Disabled)
2. Check for updates but let me choose whether to download or install.
3. Download, but let me choose when to install.
4. Automatic install and download.

Note that GPO doesn't have a native method for disabling AU: you have to use Group Policy Preferences to create and enforce the reg value. There is however a native GPO setting for changing to states 2-4 above.

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