Following the August 11, 2026 Windows 11 updates (KB5121003 and later), users reported gaming stability issues including crashes, freezes, EXCEPTION_ACCESS_VIOLATION errors, and system restarts. Microsoft linked these issues to drivers or components installed by peripherals or internal devices with RGB lighting features, specifically the inpoutx64.sys driver. This driver conflicts with certain games such as ARC Raiders, MARVEL Tōkon: Fighting Souls, and The Finals on Windows 11 24H2 and 25H2. Microsoft recommends a temporary fix by disabling the inpoutx64 driver via the Windows Registry (setting the 'Start' value to 4 under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\inpoutx64). Disabling this driver may cause loss of RGB lighting functionality or issues with RGB control software. Microsoft continues to investigate and will provide updates when available.

Affected users experience game crashes, failure to launch games, game freezes, EXCEPTION_ACCESS_VIOLATION errors, and unexpected system restarts on Windows 11 24H2 and 25H2 systems with RGB lighting device drivers installed. Disabling the inpoutx64.sys driver as a workaround may cause loss of RGB lighting features or issues with RGB control software.

Microsoft has provided a temporary workaround requiring users to disable the inpoutx64.sys driver by modifying the Windows Registry (setting the 'Start' value to 4 under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\inpoutx64) and restarting the system. Users should back up the registry before making changes. This workaround may disable RGB lighting features or cause issues with RGB control software. Microsoft is investigating the issue and will release an official fix in a future update. Users experiencing the issue are encouraged to report it via the Feedback Hub app. No official permanent fix is available yet; patch status is not yet confirmed — check the vendor advisory for current remediation guidance.