NAT negotiation error

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Joined
25 May 2011
Posts
21
My friend computer and my computer aren't able to connect to eachother, but are able to connect to the rest of the world without issue.

It comes up "NAT negotiation Error"
specifically on Company of Heroes

The full low down:
yes our nats are both open
yes upnp is enabled
we could connect before but recently can't connect at all
we can join the same game that someone else hosts but if one of us is hosting, it won't connect
we've both got our ports forwarded
we've both tried setting the dmz to our comp ip adresses
we've tried disabling anti vriruses
we've made sure the firewalls are disabled

I took my pc round to his house yesterday and as soon as i connected to his router, we were playing online all night (not lan), it's only when i get home that the issue starts again, but only between our computers. we can still connect to every one else

It's asif his computer and my computer refuse to talk to eachother unless they are on the same network but as i say, it's just ours because we can still connect to all other games

I have yet to try taking my pc to another persons house and running through their router to see if the problem persists


Any ideas??

Please help me
Thanks very much in advance


Interestingly it's not just Company of heroes but dawn of war 2 as well. and we are unable to connect to voice chat through windows live either (all of which we used to be able t do no problem) but steam chat works just fine
 
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