Can't minimize

Seems Origin is the issue here that causes this.

Try turning off Origin-In-Game. If that doesn't help, try switching to windowed mode and back to see if you then can mimimize again

As crinrict said, switching to the Windowed Mode and switching back to Fullscreen Mode solved this problem for me.

Thanks for the tip. 😕mileyhappy:

This works. I put it in windows mode, then back to fullscreen and it works fine now.

CORRECTION:  This does NOT work. It worked one time only, now it's back to no ability to minimize when playing full screen!

Turning off Origin ingame is the way to go: http://sims4.crinrict.com/en/2014/11/cant-minimize-game/