Windows Defender failed to initialize error 0x800106ba
August 2, 2009
While working on a Vista Premium machine I received this error. Apparently it has been uninstalled since it did not show in the add/remove programs menu. So far I have disabled Windows defender from the Startup menu using MSConfig. Tried to re-install but Windows will not let me since it says it is part of the OS.
Microsoft suggests:
- A system restore, or
- Re-install Vista
Found in KB Article: 935511