Microsoft has acknowledged an issue with audio output for some Windows 11 users following the September security update KB5124008, which has affected USB audio devices. Users may encounter error messages like "This device cannot start (Code 10)" in the device manager, with symptoms including unresponsive volume controls, absence of audio output, and devices not appearing in the device manager. The issue is limited to USB Audio Class 1.0 devices. A workaround involves reverting to a 2-channel audio mode, which may restore functionality for some devices. Microsoft is working on a permanent fix. Previous updates have also caused issues, such as resetting custom cursors and impacting gameplay with crashes and freezes. A poll indicated that many users believe the quality of Windows 11 is deteriorating.