This FAQ explains how to hide your desktop when using Quicklaunch, It may be preferable to have the users not see the Windows Desktop. 

See Also

Enable Lockdown mode - FAQ

1) How to Configure Settings 

  • First head to Settings > Display > Fullscreen
  • Once in Fullscreen select the flat "layout" (When in Tabbed mode desktop will not show) 
  • The three settings you will use are:
    • Layout: Select Flat
    • Behavior: Fixed
    • Layer: Always on Bottom
  • Next in Display go to > Docked 
  • Ensure "Show Dockbar" is disabled 
  • in the option "AppBar State" select "Auto Hide Right"