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Microsoft's September Windows 11 Update Breaks Audio on Some PCs

Microsoft says its September Windows 11 update can break audio on some PCs and is working on a fix, with no timeline given.

AI News Feed · 2026-09-14 20:16

In a post on the Windows release health dashboard, reported by Windows Latest, Microsoft said that "some USB Audio Class 1.0 devices might fail to start or produce audio." The same update can also leave the Sound panel in the Settings app unresponsive, which complicates attempts to diagnose the problem. On affected machines, Device Manager shows a "code 10" error, meaning the device cannot start, against the sound controller.

Windows Latest reported that the fault can affect microphones as well as speakers. Microsoft said the bug may surface in other ways: audio may work in standard stereo mode but disappear when output switches to multichannel playback. Users who have lost sound can try resetting their audio output to stereo, and Windows Latest noted that wireless audio devices do not appear to be affected. Removing the September update is another option, though doing so also removes that month's security patches.

Microsoft's published guidance was limited. "We are working on a resolution and will update this documentation when more information is available," the company said.

Audio is not the only problem reported against the September update. Users have also described GPU issues and failures in File History, the feature that backs up files to an external drive or another location. Microsoft has not acknowledged the File History fault, which Windows Latest described as more widespread than the audio bug.

Reaction on Reddit followed a familiar pattern, with Windows 11 users blaming Microsoft's growing use of AI in writing code for the desktop operating system. "And they wonder why people don't want to move from Windows 10," one Redditor wrote. Another said: "Microslop can keep vibe coding all they want, I'm already on Linux."

Windows 10 remains an alternative for users trying to avoid new bugs, since Microsoft is no longer adding features to it and is mainly applying security fixes and essential updates, though that does not make it immune to glitches.