Windows 11: Microsoft blames RGB devices for game crashes

The Windows 11 KB5121003 update, rolled out on August 11, 2026, is causing crashes, blue screens, and freezes in games like ARC Raiders, The Finals or Marvel Tōkon: Fighting Souls. Microsoft blames RGB device drivers, with no permanent fix yet.

A driver conflicting with anti-cheat systems

The issue stems from the file inpoutx64.sys, installed by some RGB control software. This driver operates in the kernel space of the system, a privileged level where game anti-cheat tools detect a potential threat. When they try to block this component, they trigger an EXCEPTION_ACCESS_VIOLATION error, causing an immediate crash or forced restart.

Microsoft confirms that the August 11, 2026 update (KB5121003) acts as a catalyst. The company states: "Ongoing investigation indicates this issue is related to devices or internal components with RGB features. These devices may install drivers or components similar to inpoutx64. On systems where these drivers are present, the issue is triggered by launching certain games."

A risky workaround

While waiting for a fix, Microsoft and Embark Studios (publisher of The Finals and ARC Raiders) suggest a manual workaround: disabling inpoutx64.sys via the Registry Editor. The steps are as follows:

1. Open the Registry Editor (regedit) from the Start menu.
2. Navigate to the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\inpoutx64.
3. Modify the Start value by entering 4 in the Value data field.
4. Restart the computer.

This workaround may disable RGB features or disrupt associated software. Microsoft recommends backing up the Registry before making changes, as it could make the system unstable.

RecommendedWindows zero-day grants SYSTEM rights even on patched PCsNews · August 14, 2026

A strained PC ecosystem

The incident highlights a structural vulnerability: the coexistence of the Windows kernel, anti-cheat systems, and third-party drivers has become a major challenge. Drivers like inpoutx64.sys access critical system levels to control hardware, which anti-cheat tools interpret as a security flaw. The result: a software conflict with visible consequences.

For now, Microsoft is only investigating "the relationship between these RGB components and the games that trigger the issue." No date has been given for an official fix. Affected players can report the bug via the Feedback Hub app.

This bug reminds us that the PC ecosystem, as powerful as it is, remains a fragile balance. Between aesthetics (RGB) and security (anti-cheat), technical compromises sometimes come at a cost: stability.