The MW4 beta ran in two windows. Early access required a pre-order or beta code, while the open beta was free to join from any supported platform.
Beta ended · September 1, 2026 (PT)
Started August 21 at 11 AM PT and ended August 25 at 10 AM PT. Eligible platforms were PlayStation 5, Xbox Series X|S, and PC (Steam, Battle.net, and Xbox on PC). Players joined through a pre-order, PC pre-purchase, or redeemed beta code.
Early access schedule and eligibilityStarted August 28 at 10 AM PT on PlayStation 5, Xbox Series X|S, and PC (Steam, Battle.net, and Xbox on PC), plus Nintendo Switch 2. The initial guide listed a 10 AM PT close on September 1. Infinity Ward’s final update gave the closing time as 10 PM PT that day.
Final beta patch notesPlayers downloaded and installed the separate Modern Warfare 4 Beta app from their platform’s digital storefront, then launched it during the open window. A pre-order or code was unnecessary.
Official installation and access guidePending verification