[CLSTR]
< Back to situation

[REVISION HISTORY]

Windows 11 software and security issues

Updated 5 times since CLSTR started tracking revisions of this situation.

What changed

2026-08-22 02:06 UTC → 2026-08-22 03:33 UTC · added removed

Windows 11 users have encountered various technical difficulties regarding security tools and system updates. Initial reports focused on troubleshooting Windows Defender failures and managing automatic driver updates. Subsequent reports indicated Microsoft Defender scans often stall at 90% or 95% progress due to specific combinations of application versions and security intelligence updates. Microsoft is investigating the August 2026 security update, KB5121003, which addressed over 400 security vulnerabilities but has been linked to significant gaming disruptions. Affected users, primarily on Windows 11 versions 24H2 and 25H2, have reported games becoming unresponsive, abrupt application closures, ‘EXCEPTION_ACCESS_VIOLATION’ errors, and unexpected full system reboots. Specific titles identified include ‘The Finals’, ‘ARC Raiders’, and ‘MARVEL Tōkon: Fighting Souls’. Preliminary investigations suggest Microsoft has identified a link between the KB5121003 update and instability is tied to caused by interactions with peripherals or internal components featuring RGB lighting, such as keyboards, mice, or motherboards. The issue appears to stem from a conflict where the Windows update changed the behavior of driver files lighting. These devices often install drivers or code components with file names similar to ‘inpoutx64.sys’. While the hardware itself is not Embark Studios, the cause, developer of ‘ARC Raiders’ and ‘The Finals’, confirmed the software used issue relates to control RGB lighting may trigger changes made to the error when certain games are launched. Windows kernel driver affecting the ‘inpoutx64.sys’ file. While Microsoft works toward a permanent resolution, Embark Studios has suggested a temporary workaround involving the removal of the specific problematic file via the Windows command prompt while Microsoft works toward a permanent resolution. to restore stability.

Versions

  1. 2026-08-22 03:33 UTC Windows 11 software and security issues
  2. 2026-08-22 02:06 UTC Windows 11 software and security issues
  3. 2026-08-21 15:39 UTC Windows 11 software and security issues
  4. 2026-08-21 07:04 UTC Windows 11 software and security issues
  5. 2026-08-20 20:29 UTC Windows 11 software and security issues
  6. 2026-08-19 18:07 UTC Windows 11 software and security issues

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.