Microsoft: September updates break audio on some Windows PCs
Microsoft's September 2026 security updates KB5124008 and KB5124012 cause some USB Audio Class 1.0 devices to fail on Windows 11 version 24H2 or later. Affected devices may show 'This device cannot start (Code 10)' errors, produce no audio output, and have unresponsive volume controls. The issue is limited to USB audio devices and impacts multichannel audio features such as 3D audio or 8-channel modes. No official workaround has been provided yet, but switching to 2-channel mode can restore audio for some users. Similar USB audio issues have occurred with previous Windows updates.
AI Analysis
Technical Summary
The September 2026 Windows security updates KB5124008 and KB5124012 introduce a known issue affecting USB Audio Class 1.0 devices on Windows 11 version 24H2 or later. After installation, some USB audio devices fail to start, resulting in Code 10 errors, loss of audio output, and unresponsive audio controls. The problem particularly affects multichannel audio modes. Microsoft has acknowledged the issue on their release health dashboard but has not issued an official workaround. Some users have mitigated the problem by switching their audio output to 2-channel mode. This issue is consistent with past problems caused by Windows updates affecting USB audio devices.
Potential Impact
The impact is limited to USB Audio Class 1.0 devices on Windows 11 24H2 or later experiencing failure to start, loss of audio output, and inability to use multichannel audio features. This disrupts audio functionality for affected users but does not indicate broader system compromise or security risk.
Mitigation Recommendations
Microsoft has not yet provided an official workaround or fix. Users experiencing issues may temporarily restore audio by switching their USB audio devices to 2-channel mode. Monitor Microsoft's release health dashboard for updates and official remediation guidance.
Microsoft: September updates break audio on some Windows PCs
Description
Microsoft's September 2026 security updates KB5124008 and KB5124012 cause some USB Audio Class 1.0 devices to fail on Windows 11 version 24H2 or later. Affected devices may show 'This device cannot start (Code 10)' errors, produce no audio output, and have unresponsive volume controls. The issue is limited to USB audio devices and impacts multichannel audio features such as 3D audio or 8-channel modes. No official workaround has been provided yet, but switching to 2-channel mode can restore audio for some users. Similar USB audio issues have occurred with previous Windows updates.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The September 2026 Windows security updates KB5124008 and KB5124012 introduce a known issue affecting USB Audio Class 1.0 devices on Windows 11 version 24H2 or later. After installation, some USB audio devices fail to start, resulting in Code 10 errors, loss of audio output, and unresponsive audio controls. The problem particularly affects multichannel audio modes. Microsoft has acknowledged the issue on their release health dashboard but has not issued an official workaround. Some users have mitigated the problem by switching their audio output to 2-channel mode. This issue is consistent with past problems caused by Windows updates affecting USB audio devices.
Potential Impact
The impact is limited to USB Audio Class 1.0 devices on Windows 11 24H2 or later experiencing failure to start, loss of audio output, and inability to use multichannel audio features. This disrupts audio functionality for affected users but does not indicate broader system compromise or security risk.
Defensive Guidance
Microsoft has not yet provided an official workaround or fix. Users experiencing issues may temporarily restore audio by switching their USB audio devices to 2-channel mode. Monitor Microsoft's release health dashboard for updates and official remediation guidance.
Technical Details
- Classification
- {"confidence":0.3,"severitySource":"default","classifier":"rss-v2"}
- Article Source
- {"url":"https://www.bleepingcomputer.com/news/microsoft/microsoft-september-updates-break-audio-on-some-windows-pcs/","fetched":true,"fetchedAt":"2026-09-14T08:31:51.088Z","wordCount":603}
Threat ID: 6aa7b0f755bf5e2cf5c67a2c
Added to database: 09/14/2026, 08:31:51 UTC
Last enriched: 09/14/2026, 08:32:00 UTC
Last updated: 09/14/2026, 13:10:35 UTC
Views: 12
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