Information about this error when trying to log in
How to claim a code for a game, a product, or Blizzard Balance.
How to resolve being unable to log in due to this error
Based on your location, children under a certain age cannot have a Battle.net account.
A community site or app throws a 404 error when attempting to login via B.net or when accessing your Battle.net data.
Information on why your gamer tag is different than your BattleTag while in Call of Duty: Modern Warfare.
Troubleshooting steps for linking a Twitch.tv account with a Battle.net account.
Some games require that you add a phone number to your Battle.net account