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

Troubleshooting steps for disconnection problems with the Battle.net mobile app

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

This article covers unexpected Blizzard Update Agent errors.

Troubleshooting steps for linking a Twitch.tv account with a Battle.net account.

Your account is unable to log into Blizzard services.

This error means Battle.net Agent (the process that installs and patches our games) couldn't stream necessary files.

Information about error BLZBNTAGT000008AC

Before you can connect to the game servers, you must add a phone number to this account.

Information on error BLZAPPBTS0000F