Forza horizon 4 teredo issues

so first of all i know wrong topic.
the community support tab brings me to another website wich is useless for my case
so on to the annoying issue…
i cannot go online whatsoever…
i’ve followed basically all guides at this point with no change.
i reinstalled windows and decided to give 1709 a shot instead of the latest crap they have and it somehow improved a little…
stil no online but using
netsh interface teredo show state i get the following error message

Type : natawareclient
Server Name : win1710.ipv6.microsoft.com.
Client Refresh Interval : 20 seconds
Client Port : unspecified
State : offline
Error : primary teredo server unreachable over UDP

i have reset teredo ect ect (basically cleared out the first 2 pages of google with the following search terms
teredo unable to qualify, server connectivity blocked, NAT type Strict
you name it. for some reason i cannot solve this issue for the life of me…
i had this same issue about a month or 7 ago and took a week to fix it and forgot how i did it ofcourse…
i have since then not played FH4 anymore and have moved since then…
i got a fritzbox 7583 modem if that helps…
i have even expose my host entirely (all ports opened to the internet) with no change at all so it doesnt appear to be a fault for port forwarding
i tried looking into the routers interface and could not find any firewall related settings to disable.
also checked to disable the teredo filter but it is not present inside my fritzbox…
heres pictures of me struggling the entire day

for some informations
i do not have another console connected in my house.
no xbox no ps4 no wii
so its the pc only so a port hijacking from the xbox is not possible…
thank you alot in advance

Try shooting a ticket to support with all that info.

Maybe it’s your router blocking Forza ports, try opening the ones shown in the thread.

https://forums.forza.net/turn10_postsm976980_What-are-the-Ports-for-Forza-Horizon-4-on-Pc.aspx

or try this:

That’s how I solved my teredo issues a few months ago.

I’d submit a ticket to the support site (as mentioned above) but also this article might be able to help.
It has a few suggestions regarding the ‘fritzbox’ which you mention too.

…In such case the issue is usually out of your control. (blame your ISP)