ATV 4 iMac antenna does not work

Hello

I can't use Airplay on my iMac.

On my iMac, there is an available AirPlay icon and am I not the Airplay option to choose for you is to connect my ATV 4.

But nothing happens.

When I go to the Airplay preferences I see ""display AirPlay: "unchecked, but I can't activate it."

With the iPhone and iPad, it works fine.

These tips on the next page have already been checked.

To view a video from your Mac to a TV high definition - Support Apple AirPlay

El Capitan 10.11.5 (15F34)

Apple TV 4 iOS 9.2

Any idea to solve this problem?

Best regards

Mirroring airPlay - operating instructions

Tags: Apple TV

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