If you are not using Windows XP, exit the autorun and run setup.exe from the disc’s setup subfolder as administrator.Insert either Red Alert 2 disc to your CD/DVD drive.If you are not using Windows XP, make sure you have re-enabled the SafeDisc driver by these guidelines.I have the retail CD version and DO NOT use Windows 10 / 11. This guide will show you how to install Command & Conquer: Red Alert 2 on modern operating systems, with different sections covering different releases of the game.