AirDrop window inactive on my iMac
My iMac AirDrop window is blank when I try to AirDrop to and from my iPhone. Neither device sees the other. I have no problem using AirDrop with another iPhone. This is all I see:
Nothing else is visible in the window. Any idea what is wrong?
My iMac:
iMac (27-inch Mid 2010), OS X El Capitan (10.11)