Blizzard servers could not be reached or may be offline.

How to play Blizzard games in offline mode.

More information about authenticator security codes

What to do when getting an error that the Battle.net Account has logged in somewhere else.

Information on error BLZBNTTAS00000005

Information on error BLZBNTBGS0000A413

Recovering a Battle.net Account when the email address has been forgotten

Some games require that you add a phone number to your Battle.net account

Instructions on linking your MLG and Blizzard accounts

Information about retrieving a locked account.