Troubleshooting the error message "The code you entered cannot be claimed."

Troubleshooting steps for communication and transmission errors.

Instructions on getting Blizzard games to play on your TV.

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

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

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

How to resolve mistakes claiming a CoD key on the wrong Battle.net account

Troubleshooting problems with the Battle.net friends list

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

What to do if any settings you change do not save