How do I relocate off-screen windows back to my desktop, if the window I am seeking is invisible?

Bring Back Misplaced Off-Screen Windows Back to Your Desktop

If you’ve ever hooked up your computer to a secondary monitor and then disconnected without remembering to move the windows back to the primary desktop, you’ve probably encountered 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. 

Option 1: Manually Moving

• Hold down the Alt key and hit the space bar.
• Select Move from the menu that appears.

• Press the arrow keys to force the window to move position.

• Just hit any of the arrow keys (Left, Right, Down, Up), move your mouse, and the window should magically pop back onto the screen.

Note: You can also hold down Alt-Tab to reveal open windows. Click on hidden window.

Option 2: Cascade Windows

• Right-click on the Taskbar.
• Select “Cascade windows”.

• This will immediately cascade all of the open windows like this, moving your window back onto the screen: