Monarch Social Sharing Plugin
  1. Log into the server running Exchange 2013 on your network
  2. Open up PowerShell
  3. Enter “Get-OWAVirtualDirectory | Set-OWAVirtualDirectory –LogonPageLightSelectionEnabled $true”
  4. Restart ISS by entering the command “iisreset” in PowerShell
  5. Now when you next go to OWA you will see a check box for using the light version of OWA