Apple TV 4K: "No Network Detected" pop-up

Hello tokyofan,

Thanks for the updated info. Since it's connected with an ethernet cable, you will need to check the ethernet cable, the modem, and the router. Plugging the ethernet cable directly into the modem may work. Try another ethernet cable also. Can also try using a Wi-Fi connection, excluding the ethernet cable, the Apple TV ethernet port, and the wireless router ports, but only test this with the wireless router connected and showing your wireless signal on other devices.

Thanks and let us know if plugging directly into the modem or another ethernet cable, or a wireless connection works. Cheers.

Hello tokyofan,

Thanks for letting us know Wi-Fi is working. This points to an issue with the ethernet cable, or connection port on the modem or back of the Apple TV. If other things work in the router port while connected, you'll need to have the Apple TV checked and see if it can be repaired or replaced.

To find a service provider, use the link here: Apple Find Locations

Cheers.

Hello tokyofan,

Thanks for asking the Apple Support Communities for help with your Apple TV not connecting to your network. We're happy to check this with you.

Please go through the troubleshooting here: If your Apple TV can't connect to Wi-Fi - Apple Support

Cheers.