What to do if you are unhappy with the name or race you chose for your character after a Race Change or Faction Change
Other players and non-player characters display "Unknown" instead of their name.
Information on why your gamer tag is different than your BattleTag while in Call of Duty: Modern Warfare.
What to do if you cannot restore a character because its name is taken
What to do if you see this error when checking your achievements
Transferred realms, but character name did not change
Troubleshooting for being unable to interact with your guild after a transfer of faction change.