The remote server returned an error: (407) Proxy Authentication Required

Question

I'm getting this error when I call a web service:

"The remote server returned an error: (407) Proxy Authentication Required".

I get the general idea and I can get the code to work by adding

myProxy.Credentials = NetworkCredential("user", "password", "domain"); 

or by using DefaultCredentials in code. My problem is that the call to the web service works in production without this.

It seems like there is a non code solution involving Machine.config, but what is it? At the moment I can't get to the production box's machine.config file to see what that looks like. I tried updating my machine.config as follows, but I still get the 407 error.

<system.net>     <defaultProxy enabled="true" useDefaultCredentials="true">         <bypasslist>             <clear />         </bypasslist>         <proxy proxyaddress="myproxy:9000"                usesystemdefault="false"                bypassonlocal="true"                autoDetect="False" />     </defaultProxy> </system.net> 

Answer 1

Just add this to config

<system.net>     <defaultProxy useDefaultCredentials="true" >     </defaultProxy> </system.net>