The report highlights that however, Microsoft did not disclose how many users are affected, only stating that some computers with USB Audio Class 1.0 devices are reportedly affected. Microsoft recently confirmed that the September Patch Tuesday security patch (KB5124008) is causing problems with USB audio on some Windows 11 systems.
The report highlights that on the support page for the patch , Microsoft has listed this under its “Known issues in this patch” section:.
Industry observers note that affected devices might experience one or more of the following symptoms:. After installing the September 8, 2026, Windows security patch, some USB Audio Class 1.0 devices might fail to start or produce audio.
Industry observers note that The device displays an error in Device Manager: “This device cannot start (Code 10).”.
According to the latest update, no audio output..
As part of the ongoing story, volume controls are unresponsive or remain at zero..
Industry observers note that sound settings are unresponsive or unavailable..
In a fresh development, some customers have reported that they’re able to restore audio in these cases by switching to 2-channel mode. Some devices might function in standard stereo configurations but fail when using multichannel audio functions, including 8-channel or 3D audio modes.
According to the latest update, this issue is limited to USB Audio Class 1.0 devices.
According to the latest update, the issue affects Windows 11 versions 25H2 and 24H2, as well as 26H1 via patch KB5124012. Microsoft says it’s working on a resolution and will patch the support page once more information is available. Unfortunately, there’s no known workaround for this problem as of this writing.