HDCP error message using hulu app on apple tv

Hello and welcome to Apple Support Communities, tunkul.

If we understand your post correctly, you see an HDCP error when viewing some protected content on your Apple TV. We’d like to help.

Make sure that your Apple TV is plugged in directly to your TV and test with a different HDMI cable.

If the issue continues follow the steps in this article:

Restore your Apple TV

Let us know if that resolves this issue for you.

Thanks for using the Apple Support Communities.

Hello tunkul.

We understand that your current setup involves routing through an amp for sound. We'd like to test for this issue using just the Apple TV and your TV to isolate this issue. Let us know how that test goes so we can determine the best steps to take.

Cheers.