automatic updates disabled

I have no idea what happened. But since today in the afternoon, i got a
warning from windows vista saying that automatic updates is off. I have not
done anything to the system. When i try to change it to be on, i get the
following error. "security center can't change your automatic updating
settings"

Any ideas are greatly appreciated.

Hello AJnino,

What method have you used to turn automatic updating back on? I suggest
trying the method described in the following Help and Support topic:

http://windowshelp.microsoft.com/Win...508331033.mspx