USB audio devices might fail to start or produce no sound

What changed

0 devices display Code 10 or fail in multichannel audio modes after installing the Sept. 8 update.

Why it matters

The issue can disable USB Audio Class 1.0 devices used for meetings, rooms and specialist audio after the September Windows update.

Known limitations

• Availability, prerequisites and rollout scope remain authoritative in the linked Microsoft documentation.

Now check

• Identify USB Audio Class 1.0 devices on systems with KB5124008
• Apply and verify the Microsoft mitigation on representative affected devices
• Retest device start, sound output and multichannel audio before broad rollout