The Battle.net desktop app is trying to connect to an invalid or nonexistent server.

Transfer Battle.net Balance between two separate Battle.net accounts.

Information on transferring a game between a parent or legal guardian and a child

Steps to resolve this error

Troubleshooting the BLZBNTBGS80000011 error. 

What to do if you experience high latency or frequent disconnects.

Troubleshooting steps for Overwatch 2 connection problems on console.

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

The login servers received invalid information

Information on free items, products, games, and services