Troubleshooting problems with the Battle.net friends list

What to do if you receive an error that your code is already claimed in your account.

What to do if any settings you change do not save

How to obtain error logs for Blizzard games

Information about this error when redeeming a key in your account

What to do if you have trouble with the captcha

Information on Error BLZBNTAGT00001399

How to install a Blizzard game you already own on a different computer

Troubleshooting step for connection-related problems on Windows.

You have attempted to connect to an invalid server. If this problem persists, please contact Customer Support.