I believe as do Technical and others here who say to go to Windows Updates and look for the patch concerning shutdown problems with Win 98 2nd edition. It’s a known problem that existed with this version of wins and the patch for it should solve the problem. I also do not think the problem was or is caused by Avast. I just recently quit using a pc with wins 98 2nd on it and did not have the shutdown problem with Avast on the machine. :wink: