What to do if the serial number at the back of the physical authenticator is scratched off

What to do if you can't resync your authenticator.

Information about this error message and what it means.

Information about securing an account that is getting verification requests that they did not initiate

What to do when the physical Authenticator battery has died and a replacement is desired?

It is not possible to remove the Battle.net Authenticator from an account with Battle.net Balance

What to do when a physical authenticator gets out of sync

What to do if you can't finish authentication before the message told you to check authenticator vanished too soon.

What to do if you are being redirected back to the login

what to do if player is unable to verify their account with the verification code