How to install a Blizzard game you already own on a different computer
If you do not have a decryption key, check the installation instructions for a point of contact.
You have attempted to connect to an invalid server. If this problem persists, please contact Customer Support.
We're having trouble starting the Battle.net desktop app. Please try again. If the problem persists, try restarting your computer.
A guide for diagnosing and repairing problems with physical hard drives.
Troubleshooting issues with your game settings changing back to default when you log back in to the game
Troubleshooting steps for when a game installation or update is stuck on "Initializing"
What to do if you are unable to use a payment method that you've used in the past.