I just recently had this problem.
http://www.blitzbasic.com/Community/posts.php?topic=67090
Whatever you do, DON'T buy the piece of software linked to in the post. I sorted out the problem by simply disabling Auto Update. Well, I say sorted out but in truth as soon as I go for a manual Windows update the problem reappears, and I don't get my Windows update. So actually I've buried my head in the sand about it, but at least my computer is usable.
http://www.blitzbasic.com/Community/posts.php?topic=67090
Whatever you do, DON'T buy the piece of software linked to in the post. I sorted out the problem by simply disabling Auto Update. Well, I say sorted out but in truth as soon as I go for a manual Windows update the problem reappears, and I don't get my Windows update. So actually I've buried my head in the sand about it, but at least my computer is usable.