Fix Call of Duty Modern Warfare 3 Error Your Operating System Windows 8 Is Not Supported

If you use windows 8 or windows 7 and when you launch Call of Duty Modern Warfare 3 you get the error: Unsupported operating system. Windows 8 is not supported by Call of Duty Modern Warfare 3 . We recommend upgrading to windows 10 version 1909 or newer. Then this could be happening because your operating system is outdated but this easy trick we&allow you to play Call of Duty Modern Warfare 3 with out having to upgrade, just follow the instruction of this video. The first solution applies to steam and the second solution applies to battle net. This troubleshooting guide will work Windows 11 and Windows 10 operating systems (Home, Professional, Enterprise, Education) and desktops, laptops, tables and computers manufactured by the following brands: Asus, Dell, HP, MSI, Alienware, MSI, Toshiba, Acer, Lenovo, razer, huawei, dynabook, LG , vaio, surface among others.