Microsoft Issues Emergency Update to Fix Bugs Introduced by September Patch
Microsoft has released an emergency update for Windows after its September Patch caused new bugs. The update addresses issues affecting Remote Desktop Services, Hyper-V-based Linux virtual machines, and some USB audio devices.
The September Patch was one of the company's biggest Windows security releases, addressing nearly 1,000 security flaws. However, it introduced problems for businesses, developers, and gamers due to unstable RDS, unresponsive servers, and non-functional shared folders in Linux virtual machines.
Microsoft is rolling out the emergency update to supported Windows versions, including Windows 11 versions 26H1, 25H2, and 24H2, as well as Windows Server 2025 and 2022. The update also includes protections for two elevation-of-privilege vulnerabilities in Windows User-Mode Power Service and Secure Kernel Mode.
Microsoft has had to issue more emergency updates this year, with four released in January following problems with a Windows 11 update, and two more in March after installation failures and Microsoft account sign-in issues.