appleTV keeps asking for appleID, passwor… - Apple Community

ALL the problems here are the result of the two-factor code's 30-second time out. By the time you put in your password on the Appletv, the code you'd received up front has expired.

The solution is to get the two-factor code AFTER you've typed in your password (and before you hit enter), then add the six digit code to the end of the password and it works.

How do you get a fresh code when you want it?

On iphone or ipad

• go to settings, iCloud
• click on your iCloud ID at top of screen
• click on "Password & Security"
• click on "Get Verification code"

Append that new code to the password on your apple tv and you're done.

https://discussions.apple.com/thread/7533430?page=4

Sent from my iPhone