: Since official servers are down, you can use community-made tools to fix multiplayer functionality; a popular guide for this is hosted on the Steam Community .
The original game doesn't support widescreen resolutions natively. Community patches like the MOHAA Revival or Widescreen Fixes are highly recommended to make the game look correct on modern monitors.
When you install MOHAA from a physical CD, the installer requires a 20-character alphanumeric code. This code was unique to every retail copy to prevent software piracy. Without this key, the "Next" button on the installation wizard remains greyed out.