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

How to report another player

You have been disconnected. (BLZ51901017)

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

Information on Unable to Locate Component error.

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

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

Troubleshooting steps for resolving error BLZBNTBGS000001FF.

What to do when a physical authenticator gets out of sync

More information about authenticator security codes