Airdrop
Why does Airdrop not work half the time???
I have a 2013 iMac running 10.10.5, and a 2015 MacBook Pro, also running 10.10.5.
Frequently with both machines sitting next to each other one will show the other machine, but the other refuses to register that the other is sitting there waiting to be discovered.
It's just so maddening that it's so flakey. Other times things register right away, and then for inexplicable reasons things just won't connect up.
OS X Yosemite (10.10.5)