This article describes an update that fixes an issue that may result in audio playback issues on a certain set of users' computers in Windows 10 Version 1511.
Symptoms
A Conexant Audio Processing Object (APO) fails a signing verification. This causes the system to lose audio functionality.
How to get this update
Windows Update
This update will be downloaded and installed automatically.
Prerequisites
There are no prerequisites for installing this update.
Registry information
To apply this update, you do not have to make any changes to the registry.
Restart information
You may be prompted to restart the computer after you apply this update.
Update replacement information
This update doesn't replace a previously released update.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
