Turn off the automatic updater.
I do not allow anyone free access to my machine - including Microsoft. Even they have been known to produce rubbish updates and security patches that cause more trouble than they may cure.
What I do is check the update site weekly(ish) for the updates available. I also check here to see if anyone has had problems with installing anything that is new on the list.
If the update is not relevant to my setup or if there are problems reported, I don't download - simple as that.