If you’ve ever hooked up your laptop to a secondary monitor and then disconnected without remembering to move the windows back to the primary desktop, you’ve probably encounted this problem:
The application is running. You can see it in the taskbar, but you can’t see it on the screen, because it still thinks it’s running on the secondary monitor. You try and use right-click, Move, but that doesn’t do anything, and the window doesn’t move anywhere. Maybe you try doing a minimize and then a restore… but still the window doesn’t come into a area of the screen you can actually use. Likely, you simply end up rebooting.
There’s a simple trick to get around this. First make sure you’ve clicked on the windows to bring it into focus. Then right-click on the taskbar and choose Move, then hit any one of the arrow keys and simply move your mouse.