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

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

Failed to download files from Blizzard servers.

What to do if you are constantly seeing the error "You can't do that yet"

What to do if your character have an error message saying that they are pacified

Information on error BLZ51914003.

You have been disconnected. (BLZ51901017)

This article covers unexpected Battle.net Update Agent errors.

Troubleshooting damaged installation files for Heroes of the Storm.

Troubleshooting steps to resolve lockups or crashes in Heroes of the Storm.