Microsoft: September updates break audio on some Windows PCs
Recorded: Sept. 14, 2026, 9:09 a.m.
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Microsoft confirmed that specific September 2026 security updates, namely KB5124008 and KB5124012, introduce known issues affecting audio functionality on certain Windows systems. This problem is specifically limited to devices running Windows 11, version 24H2 or later, and impacts USB Audio Class 1.0 devices. Users experienced various symptoms following the installation of these updates, including USB audio devices failing to start or produce sound, reporting "This device cannot start (Code 10)" errors in Device Manager, and unresponsive volume controls and sound settings. Furthermore, some users noted that USB audio speakers would only fail when utilizing multichannel audio features, such as 3D audio or 8-channel modes. Although Microsoft has not yet issued an official workaround, some users found temporary relief by switching the affected systems to a two-channel audio mode. The news item contextualizes this issue within Microsoft’s history of addressing compatibility and stability problems with Windows updates, particularly concerning audio drivers and system functionality. Previously, issues have arisen from updates such as KB5050094, which also caused audio playback problems and error codes on Windows 11 24H2 systems with USB audio device drivers. Microsoft has addressed similar compatibility concerns historically, such as when they lifted a safeguard hold preventing Windows 11 24H2 upgrades on systems running Dirac audio improvement software due to malfunctions with Bluetooth headsets and speakers. Moreover, in the past, Microsoft has resolved issues related to audio drivers and system stability, including addressing problems concerning Intel Smart Sound Technology drivers that caused Blue Screen of Death errors, and fixing bugs related to game audio unexpectedly increasing volume when using USB DAC sound systems. Beyond the audio disruption, these September updates also included fixes for known issues that cleared Windows desktop and mouse settings, as well as a bug that prevented applications like Teams and Outlook from launching on Windows devices running on ARM architecture. |