GoKawiilMicrosoft rushes out-of-band fix for bugs in record September Windows patch
Microsoft has released an emergency out-of-band update to correct problems introduced by its September Patch Tuesday release, which fixed nearly 1,000 vulnerabilities but broke folder sharing on Hyper-V Linux virtual machines, disrupted Remote Desktop Services sessions, and caused issues with some USB audio devices. The new fix covers Windows 11 versions 26H1, 25H2, and 24H2, along with Windows Server 2025, 2022, and 2012 R2, plus LTSC editions of Windows 10.
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This marks the fourth time in 2025 that Microsoft has had to issue emergency patches shortly after a scheduled update, following similar scrambles in January, March, and July. The pattern suggests growing strain in Microsoft's testing pipeline as it pushes larger, more complex updates, raising concerns for IT administrators who must now anticipate frequent follow-up fixes.
- Microsoft's September update fixed nearly 1,000 flaws but broke several system features.
- The emergency patch targets Hyper-V Linux VMs, RDP sessions, and USB audio devices.
- This is Microsoft's fourth out-of-band fix of 2025, showing a troubling pattern.
Source: theverge.com — Tom Warren, 2026-09-15
Published there as: “Microsoft issues emergency Windows 11 update to fix its record-breaking patch”
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