Audio playback and capture applications hang.

Source: Microsoft Support

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You run an application that performs audio playback and audio capture simultaneously. This is a typical scenario when your application is VoIP (Voice over Internet Protocol) software.

 

The application often hangs.

WaveOut API on Windows 7 sometimes fails to process audio samples correctly when response of your audio device is slow.

There is a problem on how WaveOut API handles audio playback requests and audio capture requests submitted by your application.

Once a hang occurs, the only resolution at this point is to restart the application.

 

This is a bug. Microsoft is planning to release a hot fix.

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