extending SfB 2016 client logging levels (AV)

Well ok… a short one here.

Recently I was working with a Skype for Business (SfB) 2016 client who had an issue with their audio / video (AV) being shown as “disconnected”, after the fourth or fifth call. In particular, the webcam wouldn’t show video on their machine when they tried to join the sixth (or fifth) call.

It was available to see the video on other apps outside of the SfB client. Even though the SfB client didn’t want to see the camera.

This looks like to be a standard USB device failure on the hardware of the PC, but I did the due diligence and got the logging from that client.

1. Go to the SfB client > Options > Logging to full.
2. Close SfB client and Outlook (make sure the SfB and Outlook processes are fully closed by checking the task manager).
3. Delete all the logs for the client here %LOCALAPPDATA%\Microsoft\Office\16.0\Lync\Tracing\
4. The important thing at this stage was to add / change the value of the registry keys, to increase the logging level, TraceLevelThreshold = 5:
   1. Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Tracing\WPPMediaPerApp\lync\VIDEO
   2. Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Tracing\WPPMediaPerApp\lync\VOICEENHANCE
5. Reproduce the issue.
6. Close the Outlook and SfB clients.
7. Send on the logs from %LOCALAPPDATA%\Microsoft\Office\16.0\Lync\Tracing\

The main point for me was to add the extra registry keys:

• Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Tracing\WPPMediaPerApp\lync\VIDEO
• Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Tracing\WPPMediaPerApp\lync\VOICEENHANCE

And for each of those keys, making sure that there was a variable called TraceLevelThreshold set to value 5.