The Battle.net desktop app is trying to connect to an invalid or nonexistent server.
This error occurs when your connection to our servers is blocked. This may be caused by a third-party program.
The disk doesn't have enough free space to install. Please free up space.
Troubleshooting steps for communication and transmission errors.
World of Warcraft does not support 32-bit operating systems.
You have attempted to connect to an invalid server. If this problem persists, please contact Customer Support.