- Call of Duty Modern Warfare 4 Beta start date: Early access begins August 21, 2026, at 11:00 AM PT.
- Open Beta: All players can join from August 28, 2026, at 10:00 AM PT.
- Early access window: Pre-order access runs through August 25, 2026, at 10:00 AM PT.
- Open Beta platforms: Xbox, PlayStation, PC, and Nintendo Switch 2 are scheduled for Weekend 2.
- Preload timing: Early Access preload begins August 20, 2026, at 9:00 AM PT.
Call of Duty Modern Warfare 4 Beta Start Date and Schedule
The Call of Duty Modern Warfare 4 Beta start date is August 21, 2026, for players with Early Access eligibility. Early Access begins at 11:00 AM Pacific Time and continues until 10:00 AM Pacific Time on August 25, 2026.
The wider Open Beta begins on August 28, 2026, at 10:00 AM Pacific Time. This second weekend does not require a pre-order and is scheduled to end on September 1, 2026, at 10:00 AM Pacific Time.
| Beta phase | Start date and time | End date and time | Entry requirement |
|---|---|---|---|
| Early Access | August 21, 2026, 11:00 AM PT | August 25, 2026, 10:00 AM PT | Eligible pre-order or redeemed retailer code |
| Open Beta Weekend 2 | August 28, 2026, 10:00 AM PT | September 1, 2026, 10:00 AM PT | No pre-order required |
| Early Access preload | August 20, 2026, 9:00 AM PT | Before Early Access begins | Early Access eligibility |
| Open Beta preload | August 26, 2026, 9:00 AM PT | Before Weekend 2 begins | Available players on supported platforms |
Convert the Pacific Time schedule before launch day. The official times are more reliable than local countdowns posted by third-party websites.
The official Modern Warfare 4 Beta information page lists the same Early Access and Open Beta windows. Availability may vary by territory, retailer, or platform, so check your platform store if the beta does not appear immediately.
Early Access vs Open Beta
The two beta weekends serve different groups of players. Early Access is intended for eligible pre-orders and selected retail-code holders, while Weekend 2 opens participation to all players on supported platforms.
Early Access
Begins August 21, 2026, at 11:00 AM PT. Designed for eligible pre-orders and registered retailer codes.
Open Beta
Begins August 28, 2026, at 10:00 AM PT. No pre-order is required for participation.
Preload
Early Access preload starts August 20, 2026. Open Beta preload starts August 26, 2026.
Nintendo Switch 2
Access is scheduled for Open Beta Weekend 2. Early Access Weekend 1 is not listed for the platform.
| Access route | Early Access | Open Beta Weekend 2 | Notes |
|---|---|---|---|
| Digital Xbox pre-order | Yes | Yes | Automatic validation is expected |
| Digital PlayStation 5 pre-order | Yes | Yes | No separate code is normally needed |
| Battle.net or Steam pre-purchase | Yes | Yes | Account registration connects access |
| Participating retail pre-order | Yes | Yes | Redeem the retailer’s 13-character code |
| No pre-order | No | Yes | Join during the August 28, 2026 window |
| Nintendo Switch 2 | Not listed for Weekend 1 | Yes | Open Beta access begins August 28, 2026 |
For digital purchases through the Microsoft Store, PlayStation Store, Battle.net, or Steam Store, players are generally validated automatically for Early Access. A participating retailer purchase usually provides a 13-character beta code that must be redeemed through the official Activision redemption page.
A retailer code does not always launch the beta by itself. Redeem it at callofduty.com/betaredeem, sign in with an Activision account, and select the intended platform.
How to Preload the MW4 Beta
Preloading is the best way to avoid waiting during the launch window. The beta application may appear locked before the scheduled start time; that does not necessarily mean the installation failed.
Confirm Your Access
Verify that your digital pre-order, pre-purchase, or redeemed retailer code is connected to the correct Activision account. Players without Early Access eligibility should prepare for the August 26, 2026 Open Beta preload.
Find the Beta Application
Search your platform store for the Modern Warfare 4 Beta. On PC, check the relevant Call of Duty product page, game-version selector, or library after access has been registered.
Install Before Launch
Start the download as soon as the application becomes available. Early Access preload begins August 20, 2026, at 9:00 AM PT, while Open Beta preload begins August 26, 2026, at 9:00 AM PT.
Wait for the Unlock Time
If the application is locked after installation, wait until the correct beta window begins. Early Access unlocks August 21, 2026, at 11:00 AM PT.
Launch and Complete Preparation
Open the beta, allow any required updates, and complete shader or asset preparation before entering Multiplayer. Installation and launch times can vary by platform.
| Platform | Where to look | Early Access preload | Open Beta preload |
|---|---|---|---|
| Xbox Series X | S | Microsoft Store | August 20, 2026, 9:00 AM PT |
| PlayStation 5 | PlayStation Store | August 20, 2026, 9:00 AM PT | August 26, 2026, 9:00 AM PT |
| Xbox on PC | Xbox PC app or Microsoft Store | August 20, 2026, 9:00 AM PT | August 26, 2026, 9:00 AM PT |
| Steam | Steam Store and Library | August 20, 2026, 9:00 AM PT | August 26, 2026, 9:00 AM PT |
| Battle.net | Call of Duty page or version selector | August 20, 2026, 9:00 AM PT | August 26, 2026, 9:00 AM PT |
| Nintendo Switch 2 | Nintendo platform store | Not listed for Weekend 1 | August 26, 2026, 9:00 AM PT |
Install the beta ahead of time, keep available storage free for updates, and open the application before the start time so required preparations can finish.
Beta Content and Weekend Features
The Modern Warfare 4 Beta focuses on Multiplayer content across several maps and modes. The listed content includes core 6v6 maps and modes, Kill Block, and the single-player Campaign mission “Entrenched.”
Weekend 2 adds larger-scale content, including Ground War: Combat Outpost and the new Zodiac Resurgence map in Call of Duty: Warzone. This makes the second weekend especially useful for players who want to test more than standard 6v6 matches.
| Content | Availability | What to expect |
|---|---|---|
| Core 6v6 Multiplayer | Beta schedule | Traditional team-based matches across multiple maps and modes |
| Kill Block | Beta schedule | A named Multiplayer mode included in the beta lineup |
| “Entrenched” Campaign mission | Beta schedule | A playable single-player preview mission |
| Ground War: Combat Outpost | Weekend 2 | Larger-scale combat introduced during Open Beta Weekend 2 |
| Zodiac Resurgence | Weekend 2 | New Warzone map content added for the second weekend |
| Beta rewards | During the beta | Rewards can be used in the beta and become playable after full launch |
Playing the beta can also unlock in-game rewards. The official schedule states that earned rewards become available for use in the beta after unlocking and can be used in Modern Warfare 4 when the full game launches on October 23, 2026.
Beta maps, modes, rewards, platform availability, and launch windows can change. Treat the in-game playlist and official announcements as the final authority during each weekend.
Start-Day Checklist and Access Troubleshooting
Use this checklist before each beta weekend. It separates account preparation from installation tasks, helping identify whether a problem is caused by access validation, the store listing, or the launch timer.
Before the Beta Starts:
- Confirm the Activision account linked to your platform
- Redeem a participating retailer code at callofduty.com/betaredeem
- Check the beta preload window for your platform
- Install the beta application and leave room for updates
- Convert August 21 and August 28, 2026 launch times to your local time
| Issue | Recommended check | Expected result |
|---|---|---|
| Beta application is locked | Compare your local time with the official launch time | The application unlocks during the scheduled window |
| Retail code is missing | Contact the participating retailer | The retailer can verify or recover the code |
| Digital pre-order is not recognized | Check the platform account and Activision link | Eligible digital purchases should validate automatically |
| Download is unavailable | Search the platform store again after preload begins | The beta listing may appear at the stated preload time |
| Installation pauses | Check storage, network stability, and platform updates | Download resumes after the limitation is resolved |
| Nintendo Switch 2 access is unclear | Check Weekend 2 availability | Open Beta access is scheduled for August 28, 2026 |
The beta may use a separate application from the main Call of Duty hub during testing. This means players should search for the dedicated beta listing rather than assuming it will appear only inside the primary application.
If a download is visible but the game remains locked, avoid repeatedly reinstalling it. Confirm the launch time, restart the platform store, and verify that the account used for the purchase or code redemption is the account currently signed in.
Preload early, verify the correct account, and launch the beta shortly before the scheduled window. This reduces avoidable delays without relying on unofficial access claims.
Modern Warfare 4 Beta FAQ
Q: What is the Call of Duty Modern Warfare 4 Beta start date?
Early Access begins on August 21, 2026, at 11:00 AM Pacific Time. The Open Beta for all eligible players begins on August 28, 2026, at 10:00 AM Pacific Time.
Q: Do I need to pre-order Modern Warfare 4 to play the beta?
A pre-order or eligible retailer code is needed for Early Access. No pre-order is required for Open Beta Weekend 2, which begins August 28, 2026.
Q: When can I preload the Modern Warfare 4 Beta?
Early Access preload begins August 20, 2026, at 9:00 AM Pacific Time. Open Beta preload begins August 26, 2026, at 9:00 AM Pacific Time on supported platforms.
Q: Can Nintendo Switch 2 players join Early Access?
Nintendo Switch 2 is listed for Open Beta Weekend 2 beginning August 28, 2026. It is not listed for Early Access Weekend 1.
Bookmark the official beta page and check it again before August 21 and August 28, 2026, because platform availability and schedules may be updated.