The "Failed to initialize renderer. Version mismatch" error is frustrating because it is abstract. It doesn't tell you which version is mismatched or where the failure happened.
: The game's .exe version (e.g., v1.0 or v1.3) does not match the expected version in the game's core files or the active patch. The "Failed to initialize renderer
: If using a "No-CD" executable, ensure its version (e.g., v1.0 or v1.3) exactly matches the version of your installed game files. Some users on Windows 10 Forums : The game's
Call of Duty 2 might not be fully compatible with your operating system. Try running the game in compatibility mode: Try running the game in compatibility mode: If
If you have a laptop with an NVIDIA RTX/GTX card and integrated Intel graphics, your laptop is probably trying to save battery by running CoD2 on the weak Intel chip. The Intel chip doesn't support the OpenGL features CoD2 needs.
Older titles like Call of Duty 2 often require specific Windows settings to communicate correctly with modern hardware:
This is the easiest fix and works 40% of the time. Your config.cfg is corrupt.