If you are working with a .rar archive, follow these steps to set up the game:

Enable "Run this program as an administrator" to avoid save file errors.

Locate and run Setup.exe (or the game's primary executable) from the extracted folder. Modern OS Fixes (Windows 10/11):

Ensure you have DirectX End-User Runtimes installed. Key Features & Enhancements Guide :: Technical solutions for Call of Duty 2.