How to install Call of Duty: Modern Warfare
Troucleshooting steps for crash problems
Troubleshooting steps for performance-related problems.
Instructions for reducing the installation size of Call of Duty or removing unwanted Game Modes.
Information for troubleshooting Call of Duty: Vanguard launch issues
How to set up the same Authenticator on more than one device.
Information about what to do if you are experiencing reduced performance on the Beta version of the Battle.net Desktop App
Troubleshooting steps for disconnection problems with the Battle.net mobile app
Troubleshooting a scenario where your Blizzard games are uninstalled every time you restart the computer