This issue basically occurs because upgrading to Windows 10 caused the drivers for the computer’s dedicated audio device (such as the Realtek High Definition Audio device) or the Dolby Digital Plus audio drivers (or both) to be upgraded, and now the two drivers can’t seem to work with each other. The Dolby Digital Plus audio drivers being incompatible with the drivers for the computer’s dedicated audio device (or vice versa) is what causes Dolby audio applications to stop working after a Windows 10 upgrade in most cases. Thankfully for anyone and everyone affected by this issue, it is entirely fixable. The following are the two most effective solutions that you can use to try and resolve this problem: Solution 1: Uninstall and then reinstall the computer’s dedicated audio device
Once the computer boots up and you log in to it, both the dedicated audio device and its drivers will be automatically reinstalled. After the dedicated audio device and its drivers have been reinstalled, check to see if the issue has been resolved.
Solution 2: Roll back to an older version of the dedicated audio drivers
Seeing as though the Dolby applications that aren’t working after the Windows 10 upgrade worked fine before the upgrade, you can be certain that the older version of the drivers for the affected computer’s dedicated audio device was compatible with the Dolby Digital Plus audio drivers. Since that is the case, uninstalling the affected computer’s current dedicated audio drivers and then installing an older version of the drivers may just be exactly what you need to do in order to get rid of this problem. In order to apply this solution, you need to: Note: Be sure to jot down the Driver Version of the audio device’s drivers, just in case you need it later on.
If the Roll Back Driver option is grayed out and unavailable, however, click on Uninstall, check the Delete the driver software for this device option, click on OK, wait for the device and drivers to be uninstalled and then install an older version of the drivers. In order to do so, go to the official Support website of either the manufacturer of the affected computer or the manufacturer of the affected computer’s dedicated audio device, search for drivers for the dedicated audio device and download and install a version of the drivers that is older than the one you uninstalled from the affected computer.
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