To troubleshoot Skype for Business, collect logs from the Horizon Agent and the Windows Horizon Client.


  1. To collect Horizon logs, including the Media Proxy logs, from the Horizon Agent, log into a virtual machine where Horizon Agent is installed.
  2. Open a command prompt, and run C:\Program Files\VMware\VMware View\Agent\DCT\support.bat
  3. To collect Horizon logs, including the Media Provider logs, from the Horizon Client, log into a physical or a virtual machine where Horizon Client is installed.
  4. Open a command prompt, and run:
    • 32-bit: C:\Program Files\VMware\VMware Horizon View Client\DCT\support.bat

    • 64-bit: C:\Program Files (x86)\VMware\VMware Horizon View Client\DCT\support.bat


A folder vdm-sdct containing zipped log files appears on the desktop and will include these directories which contain logs for the VMware Horizon Virtualization Pack for Skype for Business:

  • Client device: %TEMP%\vmware-<username>\VMWMediaProvider

  • Virtual desktop:

    • %TEMP%\vmware-<username>\VMWMediaProviderProxy

    • %TEMP%\vmware-<username>\VMWMediaProviderProxyLocal

    • %TEMP%\vmware-<username>\MMAPlugin

The default log level is 7, where the log level size and crash dumps are small. You can increase the log level to 8 for maximum logs and full crash dumps. All settings are DWORD:

  • Client: HKEY_CURRENT_USER/SOFTWARE/VMware, Inc./VMWMediaProvider/DebugLogging/LoggingPriority = 8

  • Agent: HKEY_CURRENT_USER/SOFTWARE/VMware, Inc./VMWMediaProviderProxy/DebugLogging/LoggingPriority = 8

  • Agent: HKEY_CURRENT_USER/SOFTWARE/VMware, Inc./VMWMediaProviderProxyLocal/DebugLogging/LoggingPriority = 8