Gee thanks, Microshit.
Microshit automatically updated Internet Exploder to version 11 a few days ago. I use IE sometimes because some websites won't work with Firefox 3.6.
Well, let's try it out. Start IE 11, look at Weather.com's excellent radar. Hmm. The mouse wheel doesn't do anything. Well, that's OK; don't really need scrolling for radar. Closed IE; found that the mouse wheel wouldn't work ANYWHERE. Not in Firefox, not in offline programs. Mouse wheel gone. Had to reboot to get it back. Tried this a couple more times to be sure I wasn't mistaken. Same thing each time.
Tried to revert into IE 10, but the installer won't let you revert.
Thanks, Microshit! You forcefeed a destructive program, then make it impossible to fix the destruction. And I can't simply uninstall IE, because several offline programs stupidly depend on it for the 'Flex' GUI.
Few days later: More detail. When you open IE
without touching the mouse wheel, nothing bad happens; but if you scroll inside IE even once, the wheel is broken. "Use it and lose it."
= = = = =
A month later: Found the solution. You can't revert IE by the usual download-and-install procedures, but you can roll it back by a non-intuitive method. Open the Control Panel, select Windows Update, then Installed Updates. In this list, find and uninstall the update that says simply "Internet Explorer 10." This takes it back to IE 9, which doesn't cause mouse problems.