Microsoft August 2026 Windows Updates Trigger Issues on Devices Using RGB Lighting Features
Brief
Microsoft is investigating a Windows 11 issue in which the August 2026 security updates can cause certain games to freeze, crash, display access-violation errors, or restart affected PCs.
The problem appears to be linked to RGB lighting hardware and software components that use the inputx64 driver. The issue was reported after Microsoft released the August 11, 2026 Windows update, KB5121003, for Windows 11 version 24H2 and version 25H2.
Microsoft added the problem to its Windows Release Health dashboard on August 19. It said the investigation remains ongoing as of August 21.
Windows Updates Triggers RGB Lighting Issues
According to Microsoft , devices may be affected when they have RGB-enabled peripherals or internal components, such as lighting controllers, keyboards, mice, fans, or motherboard accessories.