I tried this already, as I said in my July 27 post:
"I did this and it didn't help. I turned off automatic updates in Windows Update, restarted computer, checked for updates, let spin for 13 minutes. Nothing. I tried the manual download again, it installed fine, and searched for 12 minutes. Nothing. Cancel button didn't work, so I had to close it in Task Manager."
Since then, Windows Update has been set to "Never check for updates," and I do a cold reboot every day, yet Windows Update does not work.