Hi Chris, I tested " Detect and Identify Devices" and it worked fine. On
" Device Definition" shows all devices that pass through appliance,
display the informations as SO, IP, MAC, Hostname. It display for you?
You can downgrade to FortiOS 4.3.X. Go to Firwmare upgrade page and
select " Upgrade From: FortiGuard Network" , mark the option " Allows
Firmware Downgrade" .