Babylon.js exporter for 3DS Max, Export & Run Button

Questions
1

On the Window “Babylon.js - Export scene to babylon or glTF format”
the .gltf is stored here
C:\inetpub\wwwroot\VR-Room.gltf
when i clic the button “Export & Run”
my standart browser Firefox 64 starts with the URL:
http://sandbox.babylonjs.com/?assetUrl=http://localhost:45478/VR-Room.gltf

Firefox 64 can not load the exported gltf

i have activated Localhost by
Control Panel > Programs and Features > Turn Windows features on or off > Internet Information Services
activated Checkbox
what else i have configure/install?

Thanks Donaldix

W7 Ult 64 Sp1 Update 12.12.2018
3dsMax 2018
Visual Studio Enterprise vs2015.3.ent_enu
Max2Babylon 2018-12-18 12:09
Firefox 64.0.06914

2

I’m not an user of Firefox unfortunately but perhaps some users may not better how to enable Firefox to load from localhost