Windows has been bugging me to upgrade for the past couple times I used Parallels on my Mac, so I did. Now, although I can start Windows 10 and I can see icons for Windows 10 and Parallels Desktop at the bottom of my Mac OS screen, I can no longer open any Windows application... absolutely nothing opens. I was just using File Explorer last evening and now it will not open... nothing opens... nothing happens... nada. I would appreciate hearing any advice that may rectify this situation. Here are my particulars: macOS High Sierra version 10.13.2 Parallels Desktop 11 for Mac Version 11.2.3 (32663) Windows 10 (11.32651.0) Thanx, Ken