Macbook Pro won't connect to Apple TV, iPhone will.

Turn off your HDTV then disconnect then HDMI cable for ten seconds then reconnect then turn the TV back on.

Restart your Mac one more time then click the AirPlay icon in status menu bar top right in your screen then select the Apple TV.

See if your Mac will connect to the Apple TV.

What version is your ATV? What software does it have?

Be sure that airplay is enabled on ATV and that there are no restrictive security settings. Your symptom really sounds like ATV is specifically rejecting the computer.

I assume you have power cycled ATV after the last update or restore. It cannot hurt to review the settings, since loading system software sometimes scrambles them.

Are you able to AirPlay video from iPhone, e.g. YouTube, or only music?

Are all devices and computer on the same wifi? Or are some of the connections wired?

Reboot your network devices such as router.

You mentioned that you deleted some screen sharing apps. Are you sure they're uninstalled?

Others have mentioned that they had an early AirPlay alternative (Duet?) installed, and it was preventing AirPlay. You might also check for that.

I am able to use my iphone Airplay as well but no luck connecting from my iMac to Apple TV. I was able to do this since today. Any luck resolving yours? 😕

make sure your firewall allow the required ports, TCP and UDP ports used by Apple software products - Apple Support

Thanks, that worked for me