What to do if you receive "Invalid Serial Number"

How to unlink a console account from a Blizzard account

Information on how to request a correction of your account information.

Instructions on how to go back to seeing the tab for the game you last played.

What to do if you did not receive Sundancer.

Already completed account merge but still being asked.

Information about managing when your character can receive guild invites

How to update the secret question in your Battle.net account

How to manage your Battle.net profile visibility and chat settings

How to create a new World of Warcraft account.