
September Windows 11 Patch Breaks Core Features, Sparking Widespread Bug Hunt
Microsoft’s September 2026 Windows 11 patch KB5124008, intended to restore several features, is breaking WSL-based apps, Remote Desktop sessions, Plan9/Hyper-V file sharing, File History backups, and Explorer.exe stability on some PCs, with AMD GPU issues reported as well. Microsoft is investigating, and users are urged to install security updates promptly rather than delaying them, despite the new bugs.


