GoKawiilMicrosoft confirms September 2026 updates break some USB audio on Windows 11 24H2
Microsoft has acknowledged that the KB5124008 and KB5124012 security updates released on September 8, 2026 can cause USB Audio Class 1.0 devices to stop working on Windows 11 24H2 and later systems. Affected users report Code 10 errors in Device Manager, silent audio output, and frozen volume controls, with some speakers only failing when multichannel modes like 3D or 8-channel audio are used. No official fix exists yet, though switching to 2-channel mode has helped some users regain sound.