c# - What blocks a .NET executable from creating a listening TCP port on localhost? -

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i have application creates http server on random port (50000-59000) on "localhost". tries connect port afterwards determine if setup correctly , ready use.

this seems work on machines well. written in c#.net 4.0 windows xp , higher.

now have problem on 1 server @ 1 customer creation of server seems work can't connect it. sadly didn't information exception details not outputted software has happened.

it works if file on local disk. if start specific windows network share stops working. think have special setting causes issue. don't know reason.

my question:

do know settings, system administrator make, prevents software, running normal user, connect listening port, program has opened moment ago? may group policy settings in active directory?

i've written test program try again @ our customer.


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