The Get Help dialog window should open, and you will need to select yes to open the troubleshooter. You can launch the troubleshooter from Fix sound or audio problems in Windows by selecting the Open Get Help button in the article.

The Windows audio or sound troubleshooter might be able to resolve the issue for you.

If you have already installed the update and are experiencing issues with audio on all apps, you can try the following to mitigate the issue: Caching the MMDevice ID is not recommended and might require reinstallation of the affected app or contacting support for the developer of the app for how to resolve the issue when audio endpoints are reinitialized and have new MMDevice IDs.

If the device settings within the app are as expected, the apps might be caching the Windows Multimedia Device (MMDevice) ID.

Audio endpoints might be reinitialized after KB5015878 is installed and some apps might set the audio devices for microphone and speakers to default.

Verify that the audio devices set within those apps are the expected devices.

If only certain apps are impacted, you can try the following to mitigate the issue:

If you are using any advanced audio applications such as Open Broadcaster Software (OBS), it is recommended that you backup all your settings before installing the update.

If there are updated drivers available on Windows Update or from your Windows device manufacturer's (OEM) webpage, installing them might prevent this issue.

Updating your audio device driver (also called 'sound drivers' or 'sound card drivers') might prevent this issue.If you have not yet installed the update, you can do the following to prevent the issue:

Workaround: This issue can be mitigated differently depending on your symptoms and if you have installed the update already. Most affected audio devices drivers have the 'audio enhancements' setting disabled before installing KB5015878 or the sound device driver has issues with the 'audio enhancements' feature. Some affected Windows devices might have no audio, but other affected Windows devices might only have issues on certain ports, certain audio devices or only within certain applications. After installing KB5015878 or later updates, some Windows devices might have issues with audio not working.

Recent microsoft updates for windows 10