Windows 7, CC 2019, 64-bit PC:

Since latest Windows 7 update, Illustrator opens but none of the tools work, and the pull-downs roll back up before I can select one. Coworker with Illustrator 2017 has the same problem. Photoshop and Acrobat work.

Also, after the second-to-last Windows 7 update, we can no longer print a second PDF after making the first one, from any program (Illustrator, InDesign, AutoCAD...). We still have this problem too.