Magic keyboard f keys
I recently installed High Sierra on my 2012 Mac Mini. Now, most of the f keys on my wireless keyboard (Mac) don't work. I was used to the f9 key showing all open windows, for instance. Now, nothing. I tried the option in System preferences both ways. No change. The volume control keys do work.
The keyboard batteries are 100%.
thanks
Mac mini, OS X Mountain Lion (10.8.5)