An Intel Core i5-2500 CPU is required at a minimum to run Call of Duty: Modern Warfare. However, the developers recommend a CPU greater or equal to an Intel Core i7-6700 to play the game. Provided that you have at least an AMD Radeon R9 380 graphics card you can play the game.

The Modern Warfare 2 not launching  may occur if Windows Defender Firewall recognizes the process of running this game as a threat. To bypass this issue, you ought to allow Modern Warfare through the Firewall.

Because Modern Warfare is published by Activision, which is a part of the bigger Activision/Blizzard company. So to save money, they just put it out on the Blizzard launcher (Battle . net) instead of having to pay Steam to sell it here and they keep a part of the profits.

"Before 2024, Activision sold digital versions of PC Call of Duty titles on Valve's successful Steam platform. In 2024, Activision decided to take the game off of Steam and make it exclusively available on Battle largely to attract users to, and grow, Activision's own platform. Battle.