Microsoft confirms Windows 11’s update kills audio on some PCs, and the bugs keep piling up
windowslatest.com Sep 13, 2026

Microsoft confirms Windows 11’s update kills audio on some PCs, and the bugs keep piling up

AI-summarised brief · reviewed before publication

Microsoft has confirmed that the Windows 11 update KB5124008, released during its September Patch Tuesday cycle, causes audio failures on certain PCs. The update affects systems running Windows 11 versions 25H2 and 24H2, pushing them to builds 26200.9445 and 26100.9445 respectively. Users report that audio devices may fail to start or produce sound immediately after rebooting, with microphones and multichannel audio configurations also impacted. The issue is specifically linked to USB Audio Class 1.0 devices, resulting in a “Code 10” error in Device Manager. Microsoft acknowledges the problem but has not yet provided a permanent fix. Temporary workarounds include switching to 2-channel mode or using different hardware. This audio bug adds to a growing list of issues associated with KB5124008, which also includes Explorer.exe crashes, broken File History backups, and Remote Desktop problems. While wireless audio devices appear unaffected, the widespread nature of the bugs suggests significant instability in the latest monthly security patch.

💡 Why It Matters

  • · The accumulation of critical bugs in a single security update undermines user trust in Microsoft’s release quality control.
  • · Users are forced to choose between system security and functional stability, highlighting the risks of mandatory automated updates.