The latest Patch Tuesday included KB4489899 a new cumulative update for Windows 10 October 2018 Update.
The KB4489899 update has made many important changes. It not only fixed the zero day of Windows 10, but also problems with game performance.
But in addition to the above nice things, the new cumulative update brought an additional one problem on Windows. This time audio performance seems to be affected for users who have more than one audio device installed.
As Microsoft itself explains, the applications audio, may stop working after installing cumulative update KB4489899, because the system is set to use a different audio controller than the default one.
After installing this update on machines that have multiple audio devices, applications that provide advanced options for internal or external audio output devices may stop working unexpectedly. This issue occurs for users who select an audio output device different from the “Default Audio Device”.
In other words, if more than one audio device is installed on your computer, it is likely that the devices, or the audio applications after updating, will stop functioning. Microsoft reports that applications / devices such as Windows Media Player and Realtek HD Audio Manager may be affected.
The treatment is the same regardless of the audio player you are using. According to Microsoft, you should select the default device ήχου που θέλετε να χρησιμοποιείτε ανά εφαρμογή. Αυτό είναι εφικτό μόνο μέσα από τα προletteryou're running, and if your app doesn't have such settings, there's no way to fix the problem.
For example, in Windows Media Player, you can temporarily fix the error by following the steps below.
You should first select the default audio device you want to use Windows Media Player. If you are using another application, just look for the settings for something similar. Microsoft has the option in the application and you can find it in the path:
Windows Media Player> Tools> Options> Devices
Next, you need to select the device you want to use and click Properties. In the audio playback section, click the drop-down menu and in the Sound Device Select area, select the Default Audio Device.
You can further customize volume settings and many more in Windows 10 from the following path:
Settings> System> Audio> Application volume and device preferences
Of course, you can always solve the problem more easily by simply removing the cumulative update from your device. However, you should do so at your own risk, as this KB4489899 update resolves critical security issues in the operating system.
As for fixing this issue, Microsoft says that if everything goes well we will see the patch at the end of March of 2019.
