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NAT Negotiation Failure Previous  1, 2

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Posted: Wed May 30, 2012 5:58 pm	Odini
You'll need the Open Ports option for your router and remove any options from Port Forwarding. Just so I can clarify, what are you trying to do or resolve?	Groups Sergeant Major Posts 150 Joined Dec 22, 2010 Status Offline Gender Male

Posted: Wed May 30, 2012 6:04 pm	Colin747
When trying to connect to a multiplayer game in MTW2 it can't connect due to a "NAT Negotiation Failed"	Groups General Posts 1031 Joined Aug 07, 2009 Status Offline

Posted: Wed May 30, 2012 6:10 pm	Odini
Have you tried any of these suggestions? Suggestions	Groups Sergeant Major Posts 150 Joined Dec 22, 2010 Status Offline Gender Male

Posted: Wed May 30, 2012 6:13 pm	Colin747
Yea, don't have any P2P programs, no Hamatchi	Groups General Posts 1031 Joined Aug 07, 2009 Status Offline

Posted: Wed May 30, 2012 6:13 pm	Odini
Also, some anti-virus can cause issues. Try temporarily disabling it to see if it is blocking it.	Groups Sergeant Major Posts 150 Joined Dec 22, 2010 Status Offline Gender Male

Posted: Wed May 30, 2012 6:15 pm	Colin747
Only have the stuff that comes with Windows, made no difference.	Groups General Posts 1031 Joined Aug 07, 2009 Status Offline

Posted: Wed May 30, 2012 6:20 pm	Odini
OK, let's see if your hardware-based firewall is blocking it or windows. Firstly, open the logs for your firewall by logging into it and going to Firewall/Packet Filtering Logs and posting the contents here.	Groups Sergeant Major Posts 150 Joined Dec 22, 2010 Status Offline Gender Male

Posted: Wed May 30, 2012 6:29 pm	Colin747
From what I can see I need a separate program that came with the router to get logging and as it's not my house I'm staying in I dunno where it would be. Thanks for all the help so far though.	Groups General Posts 1031 Joined Aug 07, 2009 Status Offline

Posted: Wed May 30, 2012 6:30 pm	Odini
No worries, can you come on Teamspeak? It would be quicker than conversing through the forums. I'll talk you through enabling the windows firewall logs so we can see if it is windows blocking it.	Groups Sergeant Major Posts 150 Joined Dec 22, 2010 Status Offline Gender Male

Posted: Fri Jun 01, 2012 3:12 pm	Freddy
I had the same problem with my mtw2 before too, the problem with me was that the virtual network that Hamachi had created on my PC was interrupting the communication between my normal connection so it wouldn't work. Have you checked for any other virtual networks you have?	Posts 362 Joined Oct 03, 2009 Status Offline

Posted: Sat Jun 02, 2012 12:40 pm	Colin747
What else could be creating a virtual network?	Groups General Posts 1031 Joined Aug 07, 2009 Status Offline

Posted: Sat Jun 02, 2012 9:07 pm	Death_Merchant
Just a heads up, i had the same issue and managed to fix it by enabling upnp on my router and forcing medieval 2 to use my private ip address You can configure this in medieval2preference.cfg located in the root of the medieval 2 folder i.e (c:\program files\sega\medieval 2 total war) there should lines in the config file as below [network] use_ip = use_port = 27750 put your private ip in there (the one that you get when you type ipconfig in command line) save the file and make it read only, as medieval2 will attempt to re-write this file when it loads.	Groups Sergeant Major Posts 178 Joined Aug 09, 2009 Status Offline Gender Male

Posted: Sun Jun 17, 2012 4:29 pm	Freddy
bah, now i'm having problems. whenever i play a game with more than 2 people in it i connect fine to the lobby but when i finish loading it just hangs there and it says i have connection problems, i have uninstalled hamachi and i have no other virtual networks running on my machine, i've tried what everyone else suggested, i've resetted my router dozens of times, i just don't know what to do anymore, please help!!	Posts 362 Joined Oct 03, 2009 Status Offline

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