Overview
- The Patch Tuesday update released Tuesday, Sept. 8, KB5124008 moved many Windows 11 PCs to new builds and has been linked to multiple post‑install faults now acknowledged by Microsoft.
- Microsoft says some USB Audio Class 1.0 devices may fail to start or produce sound, with Device Manager showing “This device cannot start (Code 10)” and Sound settings sometimes becoming unresponsive.
- The failure often appears when multichannel features like 3D audio or 8‑channel modes are enabled, and many users report restoring audio by switching the device to 2‑channel stereo as a temporary workaround.
- Windows Server installs appear unaffected and Microsoft says it is investigating the root cause but has not shipped a permanent patch, leaving users and IT teams to monitor the Windows release health page for updates.
- KB5124008 has also been tied to other reliability problems such as Explorer crashes, Remote Desktop and Hyper‑V Linux VM issues, and some AMD GPU reports, raising broader questions about update testing and rollout safeguards.