Windows 11 Crashes Confirmed After August Update

On August 25, 2026, Microsoft confirmed that the update KB5121003 for Windows 11 can cause sudden crashes while gaming. The issues are attributed to a driver that supports RGB lighting features. Numerous gamers have reportedly experienced difficulties with various games after installing the update. The update KB5121003 was released as part of the monthly Patch Day.

Users reported error messages and crashes, particularly in games such as ARC Raiders, MARVEL Tōkon: Fighting Souls, and THE FINALS. Microsoft explained in a support document that the problems are related to certain peripherals or internal components that use drivers named "inpoutx64." Symptoms of the crashes include freezing of the game application, unexpected closures, and the error message "EXCEPTION_ACCESS_VIOLATION." In some cases, there was even an unexpected restart of the device. Microsoft has urged users to submit a report via the Feedback Hub if these issues occur.

In contrast, Windows 10 remains unaffected by these issues. Reports indicate no signs that Windows 10 is experiencing the same difficulties, even when using the same drivers. Experts attribute this to Windows 10 being in a more stable maintenance phase, with fewer changes being made. Ongoing investigations by Microsoft are focusing on the interactions between RGB-related components and the affected games. A temporary workaround involves disabling the inpoutx64 driver via the Windows registry.

However, Microsoft has not published specific instructions for performing this deactivation. The issues with Windows 11 may also be due to the continuous updates and new features that Microsoft regularly provides. These updates increase the likelihood of compatibility issues with older third-party drivers. Windows 11 receives new features, security enhancements, and platform-level changes monthly, which can affect stability. Microsoft has announced that further details regarding the issues and potential solutions will be released in the near future.

In the meantime, it is recommended to avoid using games affected by the crashes to prevent data loss. The exact number of affected users is currently unknown. The company has also emphasized that users should utilize the Feedback Hub for any further issues to document the situation. Microsoft plans to determine the causes of the crashes and take appropriate measures to improve the stability of Windows 11. The problems with update KB5121003 are another example of the challenges that can arise when delivering software updates.

Microsoft has previously experienced similar issues with other updates that had widespread impacts on users. The exact cause of the crashes is still under investigation. Microsoft has clarified in its support document that investigating the issues is a priority and that users will be informed of any progress. However, no specific date has been provided for the release of another update or solution.