Interesting tidbit of info. I've got 4 xbox live accounts in my house (large family). Everyone's account works fine except for 1...all on the same xbox One. Yes it is the TAPIR error. I've nuked the profile / cache / hard reset but still 3 accounts can login and play great, but the same one gets the Tapir error....
English
-
Additional info. same results on the other Xbox Ones.
-
I'm sorry if i am wrong but could it be that you don't have Xbox live Gold with the Account that don't work or with all Accounts? (pls excuse my Bad english skills :D)