Could not connect to "Apple TV" I have recently updated both my Mac &amp; Apple TV software now my Airplay mirroring is no longer working (though does through iTunes) I just receive a message saying Could not connect to "Apple TV" when clicking on the Airplay icon. It's not a WiFi issue as I can still access my computer via apple TV.
I had the same problem and found it was because I had checked "Block all incoming connections" in System Preferences > Security &amp; Privacy > Firewall > Firewall Options.