Why can’t I get in to my Apple TV . It says there are errors with this connection?

Playback of the movie every other app in our brand new tv plays no problem but Apple TV says no internet connection

I'm having exactly the same problem - I get 'Unexpected error' message for any show I try to watch on AppleTV. I've signed out, tried different browsers, tried different shows but all the same. This is SO frustrating. Anyone have any advice?

Is the issue about signing in to the app,

or about starting playback of your chosen episode or movie?

Playback of the movie every other app in our brand new tv plays no problem but Apple TV says no internet connection

What is your model TV? Watch on smart TVs and streaming devices - Apple Support

It seems like something is causing the app to be unable to contact the remote servers.

See if this document has clues that apply to your situation: If you can't watch or stream movies and TV shows in the Apple TV app - Apple Support

“No internet connection” may mean no valid reaction from the remote server.

1. Verify that your router doesn’t block Apple’s servers (or its CDN) through a firewall setting, especially if you have modified from the default.
2. Verify that your router doesn’t block ports that Apple services like to use, especially if you have modified from the default.
3. Verify that you use a good DNS on your router, like the one from your ISP, which gets updated with all server names that Apple might use.
4. Verify that your TV has the correct date and time and timezone, as Apple may be more strict about that (TLS) than other content providers.

Else

1. Check for TV software updates.
2. Check for Apple TV app updates, if not set to do so automatically.
3. Try resetting the Apple TV app.
4. Try deleting and re-installing the Apple TV app, if an option on your TV.
5. Try restarting the TV (not just sleep-wake, but a real restart).

I’m having the same issues watching on my tcl Roku tv. But here are 2 side pieces of this issue

1. it works in the morning on the tv but not in the evening
2. it works on the iPad connected to the same wifi in the evening

so strange

I'm having exactly the same problem

Are you on Fire TV as well?

If not, on what device and model do you try to access Apple TV+?

I get 'Unexpected error' message for any show I try to watch on AppleTV.

Agreed. That message isn’t very helpful for troubleshooting.

I've signed out, tried different browsers, tried different shows but all the same.

Browser access is supported on computers and mobile. The latest versions of Firefox or Chrome are advised. That may exclude some older devices that aren’t compatible with the latest versions of these browsers.

Watch Apple TV+ in a web browser - Apple Support