Overwatch completely freezes if I press the Windows key to go to my Desktop

Often, I need to press the Windows key to go to another application, or I press it by accident as it’s next to the spacebar, and this causes the game to freeze completely. The only way I can fix it is by shutting down the game in Task Manager and then launching it again.

Does anybody know how I can make it not freeze when I click the Windows key, or how to disable the Windows key whilst in game?

Chances are your system resources are freezing up when trying to tab out of focus. You can try switching Overwatch to borderless windowed view (in Options > Video) to have less of a disruption. However I recommend checking for any background processes that is causing problems on your PC.