Virtual Desktop Support is a native OfficeScan feature but is licensed separately. After you install the OfficeScan server, this feature is available but is not functional. Installing this feature means downloading a file from the ActiveUpdate server (or a custom update source, if one has been set up). When the file has been incorporated into the OfficeScan server, you can activate Virtual Desktop Support to enable its full functionality. Installation and activation are performed from Plug-In Manager.