First, connect your xbox to your pc via ethernet cable
Then bridge your wireless connection and Ethernet conneciton(Xbox) on PC
Get your default gateway for your PC Wireless, Manual IP your xbox with it.(For Example if your gateway is 192.168.0.1, Manual IP Settings OF Xbox should be like this: IP: 192.168.0.x(any number you want lower than 255), Subnet: 255.255.255.0(This is always same for everyone) Gateway: 192.168.0.1)
Set your XBOX DNS to 8.8.8.8-8.8.4.4
Set Alternate MAC Address of your Xbox to your Xbox Mac Adress.(If Mac address of your xbox is 004455A12355, set alternate mac adress of your xbox to 004455A12355)
Open DMZ on your router page for your xbox ip
Reboot Xbox
Uncheck UPNP box on FSD Test Screen.
Test Ports On FSD Now, if it fails, disable UPNP on router page