How do I get Airplay to work from Safari on Mac to Apple TV?

Hello patricknew,

I wonder if rhe OS X update has corrupted the AirPlay settings on your MBP. Can you see if they make sense? Maybe disable, restart, and re-enable. As others have already said, this behavior makes no sense. Were you running 10.11.4 before the update, or did you skip an update?

Did you ever resolve your issue? I posted a similar question here: Airplay not consistently working on MacBook Pro to Apple TV I have been working with Apple Support for a week and we have tried everything to no avail. I can airplay with all my devices (IPAD, IPhone) and with other User IDs on my MACBook Air which is very bizarre. The error that I receive using one of my two admin IDs is the same...asking for the passcode even though it is not enabled on my ATV. Even though I correctly enter it I still cannot connect but have no problem on the other IDs. After going through, I think, eight Apple support advisors, I was asked yesterday to create and email error logs for engineering. I hope they can figure it out because this is so strange.