: Modern systems like Windows 10 and 11 often struggle with old CD-ROM versions. Pirate copies rarely include the community patches needed to make the game run on modern hardware [4]. The Better Way: Where to Get it Safely

: Set the compatibility to Windows XP (Service Pack 3) .

: Usually bundled with the original Call of Duty , it features cloud saves and easy installation [5].

: Files compressed into .rar archives from untrusted sources are notorious for containing malware, trojans, or miners that can infect your PC [1, 2].

: Right-click the .exe and select "Run as administrator."