How to fix audio after applying system update (KB5015878) on Windows 10

On July 26, Microsoft released the non-security update KB5015878 (opens in new tab) as a preview, and on August 9th the update was released as security update KB5016616 (opens in new tab)for devices running Windows 10 versions 21H2, 21H1 and 20H2 on the stable channel. However, it seems that the update didn’t roll out as expected, with users complaining about audio issues shortly after the release.

The company has already acknowledged the problem (opens in new tab) and explains that after installing KB5015878 or newer updates (e.g. KB5016616) audio may not fully work on some devices, no sound on certain ports or no sound on certain applications. According to the Health Dashboard website, the issue affects computers if the Audio Enhancements setting is disabled prior to installing the update or the audio drive has issues with the Audio Enhancements feature.

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