Teredo error: primary teredo server unreachable over UDP

Is there seriously no fix to this problem? Its not like other companies can not create multiplayer capabilities on windows...only MS seems to struggle with their own software.

In my case the only difference is, that the client port is "unspecified"

Can you check to make sure you don't have one of those port forwarded ports in "port filtering"? That blocks the port and could cause this.

I would also try toggling ipV6 in your network adapter settings and if you've done all on that help page I would then refer you to update your router's firmware or reset your router to default settings. I would then ask the ISP if there's anything they can
help with.

Thank you very much, do I need to make something to use ipv4? I guess not because I cannot use ipv6 probably because of teredo. I understood that I can turn it off right? Thanks man . (And last of all, actually I get "primary teredo server unreachable over
UDP" error, and I'm done. Will it effect me bad if leave it as it is?)

Hi GetOuttaMyTree,

I tried the first two links you sent me in the past. No luck there.

I've been researching and I found that my modem does not have Teredo blocker or something like that.

I also portforwarded all of the XBOX ports and my Teredo stats changed to Network: managed (it does not say "qualified") , but after a really short while it got back into the same error "the primary teredo server unreachable over UDP".

I bought this game last year and I really really and I mean REALLY want to play it online.

Thanks for trying to help!

Hi Kapciowaty!

Thanks for reaching out to us about this issue. When you receive the message concerning Teredo, what it means is that your PC isn't able to obtain a Teredo IP address to establish a secure connection on the server and without Teredo you won't be able to
use party chat or use multiplayer gaming. Since the message you receive is stating that the "primary teredo server is unreachable over UDP", it would indicate that this is an issue concerning the router or source of your internet connection. I recommend checking
out our article concerning the
"Teredo is unable to qualify" and also contacting the IT department on your campus to see if there is a possible work around that they could assist you with.

I hope this has been helpful and best of luck this semester! Let us know the results when you can!