i have the same problem. Can I just go to my update history and unistall that particular update instead of doing system restore? My restore check points don't go back far enough to when it was downloaded. it was downloaded on Dec 11th, but just not the WAT message is showing up
Just go to the link that Aninvitedsoul has supplied and download the fix KB3024777. Run the fix then reboot. Done!! Don't uninstall KB3004394 yourself. Files have been screwed up and the fix will remove KB3004394 and repair the files.
Sorry to intervene How can you say something like that to a fellow with a similar problem to yours? You got your answer, share with others, this is the spirit of MDL. It was not very classy of you.