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Information on linking your Battle.net account with your Xbox Live®, Nintendo Switch®, or Playstation Network® console accounts.Unable to link Xbox Account - "Provider did not accept user authorization"
What to do if you receive an error message when attempting to connect your Xbox account to your Battle.net account.Linked the Wrong Console and Battle.net Accounts
How to unlink a Playstation Network, Xbox Live, or Nintendo Switch account from a Battle.net account.
Explains the level of technical support we offer on Blizzard and Activision products.Diablo II - The CD key you installed with has been disabled
Information about this error when login to Diablo IIBLZ51900002
Information on error BLZ51900002
Troubleshooting for error BLZBNTBNA00000015BLZBNTBNA00000012
Troubleshooting for error BLZBNTBNA00000012Input Mapping Game Controls to Unsupported Controllers
Information regarding Blizzard's stance on input mapping, as it relates to game controls