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Microsoft fixes audio problem in Windows with rollback of known issue

Microsoft has confirmed more issues after the recent updates to Windows 10. After the July optional updates and August Patch Day, audio drivers may stop working and audio may be limited or not played at all. These are updates for Windows 10 version 20H2 and newer.

According to information from Microsoft, Windows 11 is not affected. The issue had already surfaced with update KB5015878, which was distributed as an optional update in July. The content of this update was then distributed to all users with the August patch KB5016616, so the audio issue also affects both updates and all builds from version 19042.1865.

Roll back ‘half’ known issue

In the Windows Health Documentation, the group has now not only published confirmation of the problem but also presented a workaround. A Known Issue Rollback (KIR) update has also been launched to prevent the bug from spreading. However, as far as we know, the KIR update is only used to a limited extent.

As a rule, on the one hand, it is used to ensure that user devices that have already been affected are restored to the state they were in before a faulty update and then play a sanitized update. On the other hand, it fixes the affected updates and ensures that only the cleaned update can be used for new installations in the future.

Microsoft writes

Solution: This issue has been resolved with the Known Issue Rollback (KIR). Note: This KIR prevents the issue on Windows devices that do not have KB5015878 installed, but does not affect devices already affected by this known issue. Note that it can take up to 24 hours for the solution to be automatically pushed to consumer devices and unmanaged business devices. Restarting your Windows device may allow the solution to be applied to your device faster.

Audio Dropout and Limitations

An explanation for this limitation is not yet available. The error manifests itself differently in the different hardware configurations. Some users experience a complete audio blackout, while others only experience audio chops on specific ports, devices, or applications.

According to Microsoft’s investigation, the affected audio drivers disabled the “Audio Enhancements” setting before installing the updates, or the sound device driver has issues with the “Audio Enhancements” feature. For users affected by the audio interference, the Windows team has published troubleshooting instructions:

Problem Solving

If you have already installed the update and are having audio issues with all applications, try the following to resolve the issue:

  • The Windows audio or sound troubleshooter may be able to solve the problem for you. You can start >Troubleshooting in Fix audio or sound problems in Windows by clicking the Open Help button in the article. The Get Help dialog box should open and you should select Yes to open the troubleshooter.
  • If the audio still doesn’t play as expected on your device, follow the instructions in Turn off audio enhancements. Note: The article uses the microphone as an example, but you must follow the steps for each audio device involved.
Mark Goodman

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