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Microsoft Emergency Patch Fixes September Update Bugs
15 Sep
Summary
- Microsoft issues emergency update for recent September patch issues.
- Problems affected Hyper-V, RDP, and USB audio devices.
- This marks a common occurrence of out-of-band updates this year.
Microsoft has issued an urgent out-of-band update to rectify issues stemming from its massive September patch Tuesday release. The company's largest update ever, intended to fix nearly 1,000 flaws, inadvertently introduced bugs affecting businesses, developers, and gamers.
Key problems included disruptions to folder shares on Hyper-V Linux virtual machines, Remote Desktop Services sessions, and certain USB audio devices. The emergency update, released yesterday, resolves these specific problems across Windows 11 versions 26h1, 25H2, and 24H2. Updates were also provided for Windows Server 2025 and 2022, along with older Windows 10 LTSC and Windows Server 2012 versions.
This rapid, out-of-band response is becoming a pattern for Microsoft in 2026. Previously this year, the company released multiple emergency updates in January, March, and July to address various critical bugs, installation failures, sign-in issues, and Intel driver problems causing performance degradation.
