NAT TYPE STRİCT AND TEREDO NOT FOUND

If your Router blocks the Teredo Port UDP 3544 you can´t do anything against it. XBOX one needs that you Router can use the UDP Port 3544 8you so NOT need to Port Forward or open the port).

Many Routers like Fritz Box block Teredo Port by default - So the Fritz Box gets an Firmwareupdate where you can enable NOT to block this Port.

You can try to update your Firmware of your Router and you can search how to enable the teredo Port (like I said above you don´t need to port Forward this Port)

I ve done that. So now when i go to settings in windows to xbox network my Nat type is Strict - Teredo cannot qualify after the check, the Teredo is Enabled and Im connected .. When I run Forza i still cant reach the servers and the Nat type is again
strict.

Yes, NAT type shows strict and testing the multiplayer connection yields this error: 'Can't get a Teredo IP address'

Im using the xbox app on Pc and no, I ve already tried this solutions nothing helped i couldnt just find these Teredo things in device manager

Hey Josh, I'm sorry to hear you're having issues with getting into multiplayer gaming on the Xbox One. Unfortunately while you're in the dorm you're at the mercy of the IT department. The good news is that in some situations the IT department can, and will,
help to resolve your issue. Without knowing the setup that your dorm has it's really difficult to give you a all-in-one step to get it completely resolved, but generally speaking dorm set ups are pretty restrictive when it comes to ports. The ports you would
wan't to get open on your connection are 3074, and 3544. The port 3544 is the port specifically for Teredo. For further help, and possibly getting help talking to your IT department, you can always get in touch with support
Here.