Recent developments surrounding the Windows update KB5121003 have raised concerns among gamers due to its incompatibility with the driver inpoutx64.sys. Users are experiencing unexpected crashes during gameplay, which may include immediate Windows restarts and error messages such as “Hang detected on GameThread” or EXCEPTIONACCESSVIOLATION. Additional problems introduced by KB5121003 include unexpected drops in refresh rates, black screens, faulty HDR behavior, and other graphics-related issues. There are reports of Windows Hello via PIN leading to the deletion or corruption of the stored sign-in key upon restart. Microsoft has not publicly acknowledged these issues, but the developer Embark is aware and working on a long-term fix. Potential workarounds include stopping and deleting the inpoutx64.sys driver or uninstalling KB5121003, although the latter may compromise system security.