: If the game is installed but you lost the physical manual, you can often find the key in your computer's registry. Search for HKEY_CURRENT_USER\Software\MountAndBladeKeys or a similar folder named after the game; the serial_key entry contains your code. Common Activation Fixes for v1.138
“Runtime error” on launch. Fix: Install DirectX 9.0c and the latest Visual C++ Redistributables. Mount And Blade With Fire And Sword 1.138 Serial Key
Are you getting an or "Invalid Key" error? Did you buy the game on Steam, GOG, or a physical disc ? Are you trying to play Singleplayer or Multiplayer ? : If the game is installed but you