How to resolve this error when redeeming a Blizzard Balance code

Information on error BLZBNTAGT0000085C

What to do if you internet service provider (ISP) is encountering connection issues.

How to report another player

What to do if the verification code received via SMS doesn't work

We're having trouble starting the Battle.net desktop app. Please try again. If the problem persists, try restarting your computer.

What to do if the security code sent to your mail or SMS is not allowing you to authenticate your account

You have been disconnected. (BLZ51901017)

A guide for diagnosing and repairing problems with physical hard drives.

This error occurs when you have connected to our patch server but you cannot download patch information.