Have had my Apple TV for over a year on the same iTunes account, working flawlessly. All of a sudden today, I get random:
Could Not Sign In
Unknown error.
Messages.
Restart - nada. Power interrupt - nada.
Log off and try to log back in in settings: same message every time now.
Help!
Experiencing the same problem.. Did you ever find a solution?
Sort of. I did a full restore from settings, which resets it to factory settings, but with the latest software update. Then had to set it up like new, and re-login or register apps like MLB, Netflix, Hulu, etc. Took over an hour, but the problem hasn't been back since. Kind of sad that no one replies on these forums, including Apple support. I'm full Apple technology ecosystem in my home, but have started to shop other devices now after this experience. Technology issues I can take. Lack of support, not so much.
Having the exact same problem as I speak, unbelievably frustrating because it's late and I just want to watch some shows before bed.. I guess I'll try the full reset and hook up Netflix etc later
I fixed by hitting "Reset All Settings" on the AppleTV. I'd been having trouble with IP issues using a first gen airport base station. Decided to give up on it after must have been more than 6 years of loyal service. Finally swapped with an en express I had. I think it might have been related to the Apple TV's ITunes issues.
Could not sign in Unknown error.
