Activision has officially opened the Call of Duty: Modern Warfare 4 public beta to all players worldwide today starting at 10:00 a.m. Pacific Time. Unlike the previous early-access weekend, no preorder, subscription code, or voucher is required to participate.
The open test runs through September 1 across PlayStation 5, Xbox Series X|S, PC, and Nintendo Switch 2 with cross-platform multiplayer and unified cross-progression fully active. Players from Weekend One will retain their unlocked weapons, loadouts, and weapon mastery attachments while working toward exclusive beta participation rewards.
With the full game scheduled for October 23, this second test gives millions of players their first taste of MW4's omnidirectional movement, refined gunplay mechanics, and tactical equipment. Track shooter updates and patch coverage on [/news](/news).
Key Takeaways & FAQs
- Category: Call of Duty.
- Date: August 28, 2026.
- Source: Activision.
Q: When does the Modern Warfare 4 open beta run? A: The open beta runs from Friday, August 28 at 10:00 AM PT through Tuesday, September 1, 2026.
Q: Do I need a preorder code to play the MW4 open beta? A: No, Weekend Two is completely open to all players on all supported platforms with no code required.