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WCF Duplex fails in soem machines

Posted By:      Posted Date: October 28, 2010    Points: 0   Category :WCF

Hello i am developing a small chat application in wpf  inside our big intranet and under a domain . I use  http duplex with callbacks to achvie this. First everything works fine in my machine(of course) when i run 2 clients they can talk with each other and everything is smooth. Then i try with other dev machine of a co worker and also everything works.

the problem is  when i go and try the client app on my production machine i m not able to get it working, other services (not duplex) work, but the duplex chat dont' work.  i have done some trace on wcf server side that is  running my machine and i see it's maybe a firewall problem on the prodction machines, or even on the domain, well.. at least that's what i think... I have copy pasted the trace result . Any help would be apreciate since i m struggling a lot to find a solution. Thanks

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