: Multiplayer test is failed

That doesn't change the settings saved for the connection. That will not work and was already tried.

Hard reset your xbox that may fix your problem

Hello,

Thank you all for your help. I did so many actions, but finally it helped:

Restoring the XBOX

Rebooting the router

Setup ports in router

Setup DNS in XBOX

Changing the network name

Only after changing the network name, the problem has resolved...

Thank you all!

Hello Uriel! Does it provide you with an error code at all or does it simply just say "Interpret Error Message"?

Also, have you tried resetting the router and letting Xbox automatically dealing with your ports? Let me know and I'll be happy to further assist!

Regards,

Hello,

As a frequent international traveler who runs into NAT issues I can definitely understand your frustration!

I would actually suggest you goto your advanced router settings and just double check that the xbox did not accidentally get added to the firewall of the router.

If you look through your router config there is typically a tab for security or something that that sort which will contain the banned devices.

Just a suggestion because although rare sometimes failure to connect at all, after messing with port configs can trip built in firewalls. Hopefully this helps. If not I would be willing to assist further.

As for ports: I would reccomend

either UPnP or I have had success opening the following ports for an open NAT.

UDP port 5060

UDP port 5061

UDP port 3074