USB Headset Troubleshooting: Lost Audio on Windows 7 Computers
I lose my listening (receive) audio intermittently when using a USB headset on my Windows 7 computer.
Issue In certain instances, you may lose receive audio while using a USB headset with a softphone or other audio application; however, the microphone continues to function. This issue only occurs with Windows 7 machines and can occur with USB audio devices from other manufacturers. Resolution/Workaround As a workaround, disconnect and reconnect the USB headset. To resolve the issue, install the following Microsoft hotfix: http://support.microsoft.com/kb/2721341. Cause The issue has been identified by Microsoft as a problem with Windows 7. Microsoft released hotfix 2721341 to correct the problem.