Windows 11 KB5124010 Games Crashing: Battlefield 6, WARDOGS & Anti-Cheat Fix

If Battlefield 6 suddenly crashes 15–30 seconds after launch, WARDOGS displays a WD-L020 error, or another anti-cheat-protected game stopped working immediately after a Windows update, check whether KB5124010 was recently installed.

Fresh reports appearing after Microsoft’s September 22, 2026 Windows 11 preview update point to a possible compatibility problem affecting certain games. The strongest reports currently involve Battlefield 6 and WARDOGS, while Battlefield 2042 and other anti-cheat-protected games have also been mentioned by affected players.

There is one important limitation: Microsoft has not yet officially identified KB5124010 as causing these game crashes. Therefore, this guide distinguishes Microsoft’s confirmed update information from community-reported symptoms and workarounds.

What Is Windows 11 KB5124010?

KB5124010 is Microsoft’s September 22, 2026 optional cumulative preview update for Windows 11 versions 24H2 and 25H2.

According to Microsoft’s official release information, installing it updates:

• Windows 11 24H2 to OS Build 26100.9550.
• Windows 11 25H2 to OS Build 26200.9550.

Because this is an optional non-security preview update, users normally obtain it through:

Settings > Windows Update > Advanced options > Optional updates

The update includes Windows improvements and fixes. However, shortly after its wider release, gamers began reporting new launch and crash problems.

Is KB5124010 Really Causing Battlefield 6 to Crash?

There is currently a strong timing correlation, but no official Microsoft confirmation of the root cause.

Fresh Battlefield 6 reports describe the game launching through Steam but then crashing back to the desktop approximately 15 to 30 seconds after initialization.

Some affected players report that the behavior is highly repeatable: install KB5124010 and the game crashes; remove the update and the game launches normally again.

That rollback result makes KB5124010 a useful diagnostic lead.

What Happens to WARDOGS After KB5124010?

WARDOGS players are reporting a somewhat different symptom.

Instead of crashing after entering the game, WARDOGS may fail during its launch process and display a WD-L020 error.

One reported variant is:

The hexadecimal-looking suffix can vary, so users encountering another WD-L020 variant should not assume they have an unrelated problem.

Several affected players report that uninstalling KB5124010 and restarting Windows restored WARDOGS.

For the exact WARDOGS error, see our dedicated guide:

WARDOGS WD-L020 Error Fix

Is Easy Anti-Cheat Causing the KB5124010 Problem?

That has not been established.

The fact that several affected games use anti-cheat technology has naturally led to speculation about compatibility between the Windows update and kernel-level anti-cheat components.

However, different games can use different anti-cheat technologies. Battlefield titles, for example, may use EA’s own anti-cheat technology rather than the exact same implementation used by another game.

It is therefore inaccurate to say that Easy Anti-Cheat is definitely broken by KB5124010 without confirmation from Microsoft, Epic Games or the relevant game developer.

The safer conclusion is:

Fix 1: Check Whether KB5124010 Is Installed

Do not uninstall anything until you establish whether the update is actually present.

1. Press Windows + I.
2. Select Windows Update.
3. Open Update history.
4. Look under the latest quality/preview updates.
5. Find KB5124010.

Also compare its installation date with when your game started crashing.

If the game was already broken before KB5124010 arrived, the update is a much weaker explanation.

Fix 2: Restart the PC Before Rolling Back

Perform a complete Windows restart before removing the update.

1. Exit the game.
2. Close Steam, EA app or the relevant launcher.
3. Open Start > Power.
4. Select Restart.
5. After Windows reloads, start the launcher again.
6. Test the affected game.

This simple step matters after Windows and anti-cheat components have been updated.

Fix 3: Verify the Game Files

Before changing Windows, verify that the game itself has not been damaged.

Steam

1. Open Steam.
2. Select Library.
3. Right-click the affected game.
4. Choose Properties.
5. Select Installed Files.
6. Click Verify integrity of game files.
7. Allow Steam to complete the scan.

If Steam repairs files and the game works afterward, there is no reason to remove KB5124010.

If verification succeeds but the game continues crashing exactly as it did after the Windows update, continue with the diagnosis.

Fix 4: Repair the Supported Anti-Cheat Component

If your game provides an official anti-cheat repair or reinstall option, use it.

The exact procedure varies by game, so avoid copying an Easy Anti-Cheat procedure into a game that uses a different anti-cheat platform.

After repairing the appropriate component:

1. Restart Windows.
2. Open the game’s official launcher.
3. Launch the game.
4. Check whether it remains open beyond the point where it previously crashed.

If the problem persists, continue to the rollback test.

Fix 5: Uninstall KB5124010 — Reported Workaround

This is currently the most significant workaround being reported by affected Battlefield 6 and WARDOGS players.

Consider it when all three of these are true:

• The game worked before September 22’s update.
• KB5124010 is installed.
• The crashes began immediately after installation.

How to Uninstall KB5124010

1. Open Settings.
2. Select Windows Update.
3. Open Update history.
4. Scroll down and select Uninstall updates.
5. Locate KB5124010.
6. Click Uninstall.
7. Confirm the removal.
8. Restart Windows when prompted.
9. Launch the affected game again.

What If the Uninstall Button Is Missing?

Some Windows configurations may not display the expected uninstall button.

A community-reported alternative is Windows Update Standalone Installer:

wusa /uninstall /kb:5124010

This command must be run with appropriate administrator privileges.

Fix 6: Temporarily Avoid Reinstalling the Optional Preview

If removing KB5124010 immediately restores the affected game, avoid manually reinstalling the optional preview solely for testing.

Monitor Microsoft’s KB5124010 release notes, Windows Update and the affected game’s official support channels for a confirmed resolution.

Because preview updates are designed to deliver non-security fixes and changes ahead of the next regular update, affected gamers may prefer to remain on the last stable working configuration while the compatibility issue is investigated.

Should You Pause All Windows Updates?

Not necessarily.

KB5124010 is an optional preview update. That is different from recommending that users permanently disable Windows security updates.

Security updates contain important protections, so a gaming workaround should not become a reason to leave Windows indefinitely unpatched.

Monitor the official KB page and install Microsoft’s eventual corrected update when applicable.

How to Check Your Windows Build

Knowing the Windows build helps determine whether KB5124010 has been applied.

1. Press Windows + R.
2. Type winver.
3. Press Enter.

KB5124010 corresponds to these public Windows 11 builds:

What Problems Does Microsoft Officially Acknowledge?

This distinction is important for an accurate diagnosis.

Microsoft’s current KB5124010 documentation acknowledges issues including:

• Some domain-joined devices losing their secure trust relationship with an on-premises Active Directory domain.
• Some USB Audio Class 1.0 devices failing to start or produce audio after the September Windows updates.

Microsoft’s current KB5124010 known-issues section does not list Battlefield 6, WARDOGS or general anti-cheat game crashes.

Therefore, articles claiming “Microsoft confirms KB5124010 breaks Battlefield 6” would currently overstate the available evidence.

What Not to Do

How to Tell If KB5124010 Is Really Your Problem

Use the timeline rather than guessing:

1. Confirm the game worked normally before the update.
2. Confirm KB5124010 was installed.
3. Confirm the crash started immediately afterward.
4. Restart and verify game files.
5. Test again.
6. Remove KB5124010.
7. Restart Windows.
8. Test the same game under the same conditions.

If the game consistently works after rollback, the update becomes a strong suspect on that PC.

If nothing changes, investigate the game’s own crash logs, graphics drivers, launcher and server status instead.

Official Microsoft KB5124010 Information

Microsoft’s release notes are the best source for determining whether the company has acknowledged a new issue or published a resolution.

Check Microsoft KB5124010 Status

Related Gaming Error Guides

Use these pages to build an internally linked troubleshooting cluster:

• WARDOGS Error WD-L020-95bc94d86a0d Fix
• WARDOGS Error Codes: All Errors & Fixes
• Latest Game Errors & Fixes

Editor note: Replace any placeholder internal path above with the final published URL if your WordPress slug differs.

KB5124010 Games Crashing: Quick Answers

Last reviewed: September 23, 2026. Because this is an emerging Windows gaming issue, check Microsoft’s official KB5124010 release notes before applying or reversing an update.