A "Known issues in this update" résznél ez az ért érdekes:

"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 that select an audio output device different from the “Default Audio Device”. Examples of applications that may stop working include:

Windows Media Player
Realtek HD Audio Manager
Sound Blaster Control Panel"