Forum Discussion
KB5094126 broke my games
After downloading security patch KB5094126, none of my games are acting right. Namely, they've started running poorly. If there's a quick fix, please let me know.
1 Reply
Hey — Microsoft’s current KB5094126 page does not list a broad gaming-performance regression as a known issue. Interestingly, the update includes a fix for virtualization-related crashes that could affect some gaming apps, but that does not rule out a driver, anti-cheat, or overlay conflict on a particular PC.
First confirm the installed build with `winver`, install the GPU and chipset drivers from NVIDIA/AMD/Intel or the PC maker, and test one game with overlays, recording tools, and third-party antivirus disabled. A clean boot is useful if every game is affected. Please note whether the problem is low FPS, stutter, crashes, or failed launch—those lead in different directions.
Official update details: https://support.microsoft.com/en-us/topic/june-9-2026-kb5094126-os-builds-26200-8655-and-26100-8655-1a9bcba6-5f53-4075-8156-fe11ac631737
If the timing is exact and the PC is otherwise stable, temporarily uninstalling the KB can be a diagnostic test, but don’t leave a security update removed; report the result in Feedback Hub and reinstall once the cause or newer fix is available.
