"Following the release of Windows updates on August 11, 2026 (KB5121003) and later, Microsoft received reports of issues involving inability to run games as expected," Microsoft said in a Windows release health dashboard update on Wednesday.
Microsoft confirms an active investigation into August updates
Microsoft has acknowledged user reports that a limited number of games become unresponsive on devices running Windows 11, version 25H2 and version 24H2, and said it is investigating whether the August updates are the cause. In its Windows release health dashboard update, the company said it is "presently investigating to determine if this is an issue caused by Microsoft" and promised to "provide an update when more information is available."
Microsoft also asked gamers experiencing these issues to file reports via the Feedback Hub app, signaling that the company is collecting telemetry and user-submitted diagnostics while the investigation proceeds.
Which games and what symptoms have been reported
Users have reported problems with a small number of titles. The specific games named in reports include ARC Raiders, MARVEL Tōkon: Fighting Souls, and The Finals. The complete list of symptoms reported on impacted systems, as recorded by Microsoft, includes:
- games freezing
- games closing without notice
- "EXCEPTION_ACCESS_VIOLATION" errors
- unexpected system restarts
Microsoft attributed the timing of the reports to the release of the August updates, beginning with KB5121003 on August 11, 2026, and later releases after that date.
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Fix the backlogKB5121003 and the August 2026 Patch Tuesday context
The KB5121003 update was released on August 11, 2026 as part of the August 2026 Patch Tuesday. Microsoft described the release as including Secure Boot updates and improvements to File Explorer and Windows Search. The August Patch Tuesday package also included security fixes: Microsoft patched 400 vulnerabilities in total with that release, including one vulnerability Microsoft said was actively exploited and two publicly disclosed zero-day flaws.
Microsoft's update notice ties the gaming reports to the post‑release window for KB5121003 and later updates, and the company is investigating whether its updates are responsible for the reported behavior.
Past compatibility holds and upgrade blocks provide precedent
Microsoft's current investigation arrives against a recent history of game-related compatibility interventions. The company previously blocked Windows 24H2 upgrades on some systems in October 2024 because of known issues that caused Easy Anti-Cheat blue screens and Asphalt 8 game crashes. Last year, Microsoft also lifted a compatibility hold after confirming that the Auto HDR Windows feature was breaking some games on Windows 11 24H2 systems.
More recently, Microsoft removed several upgrade blocks that prevented players of Asphalt 8: Airborne, Assassin's Creed, Star Wars Outlaws, and Avatar: Frontiers of Pandora from upgrading their devices to the latest Windows version. Those past actions show Microsoft has used upgrade holds and removals to manage compatibility problems tied to games and anti-cheat components.
What this means for gamers, developers, and enterprise IT
- Gamers: Microsoft explicitly asked gamers experiencing these issues to file a report via the Feedback Hub app; affected players should use that channel to transmit diagnostics and error messages such as "EXCEPTION_ACCESS_VIOLATION."
- Game developers and publishers: Titles reported as affected—ARC Raiders, MARVEL Tōkon: Fighting Souls, and The Finals—are already showing symptoms on some Windows 11 24H2 and 25H2 systems, a pattern that will draw developer attention while Microsoft investigates.
- Enterprise IT and device managers: The reports are tied to Windows 11, versions 24H2 and 25H2 and followed the August 11 KB5121003 release; IT teams tracking patch rollout and compatibility may need to weigh the reported gaming impact against the security fixes included in the August Patch Tuesday release.
Microsoft's statement makes clear the company is gathering information and has not yet assigned root cause. The next firm milestone in this story is the update Microsoft has pledged to publish when its investigation reaches a conclusion or yields new data; until then, the Feedback Hub remains the primary channel for affected users to provide reports.
