blocks|key|1285087|text|prod中的机器或web.config可能具有配置中的设置；您可能不需要代理标记。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1285088|<system.net>
++++<defaultProxy+useDefaultCredentials="true"+>
++++++++<proxy+usesystemdefault="False"
+++++++++++++++proxyaddress="http://<ProxyLocation>:<port>"
+++++++++++++++bypassonlocal="True"
+++++++++++++++autoDetect="False"+/>
++++</defaultProxy>
</system.net>|code-block|syntax|javascript|1285089|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Probably the machine or web.config in prod has the settings in the configuration; you probably won't need the proxy tag.

<pre><code>&lt;system.net&gt;
 &lt;defaultProxy useDefaultCredentials="true" &gt;
 &lt;proxy usesystemdefault="False"
 proxyaddress="http://&lt;ProxyLocation&gt;:&lt;port&gt;"
 bypassonlocal="True"
 autoDetect="False" /&gt;
 &lt;/defaultProxy&gt;
&lt;/system.net&gt;
</code></pre>

blocks|key|1285124|text|请咨询您的防火墙专家。它们打开PROD服务器的防火墙，因此不需要使用代理。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1285125|感谢你的建议帮助我解决了我的问题：|1285126|必须在两个位置设置凭据才能通过407错误：|1285127|HttpWebRequest+webRequest+=+WebRequest.Create(uirTradeStream)+as+HttpWebRequest;
webRequest.Proxy+=+WebRequest.DefaultWebProxy;
webRequest.Credentials+=+new+NetworkCredential("user",+"password",+"domain");
webRequest.Proxy.Credentials+=+new+NetworkCredential("user",+"password",+"domain");|code-block|syntax|javascript|1285128|瞧！|1285129|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|R|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Check with your firewall expert. 
They open the firewall for PROD servers so there is no need to use the Proxy.

Thanks your tip helped me solve my problem:

Had to to set the Credentials in two locations to get past the 407 error:

<pre><code>HttpWebRequest webRequest = WebRequest.Create(uirTradeStream) as HttpWebRequest;
webRequest.Proxy = WebRequest.DefaultWebProxy;
webRequest.Credentials = new NetworkCredential("user", "password", "domain");
webRequest.Proxy.Credentials = new NetworkCredential("user", "password", "domain");
</code></pre>

and voila!

blocks|key|1070532|text|我也遇到过类似的代理相关问题。在我的例子中，这足以补充：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1070533|webRequest.Proxy.Credentials+=+new+NetworkCredential("user",+"password",+"domain");|code-block|syntax|javascript|1070534|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I had a similar proxy related problem. In my case it was enough to add:

<pre><code>webRequest.Proxy.Credentials = new NetworkCredential("user", "password", "domain");
</code></pre>

blocks|key|1070554|text|HttpWebRequest+webRequest+=+WebRequest.Create(uirTradeStream)+as+HttpWebRequest;

webRequest.Proxy+=+WebRequest.DefaultWebProxy;

webRequest.Credentials+=+new+NetworkCredential("user",+"password");

webRequest.Proxy.Credentials+=+new+NetworkCredential("user",+"password");|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1070555|它是成功的。|unstyled|1070556|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>HttpWebRequest webRequest = WebRequest.Create(uirTradeStream) as HttpWebRequest;

webRequest.Proxy = WebRequest.DefaultWebProxy;

webRequest.Credentials = new NetworkCredential("user", "password");

webRequest.Proxy.Credentials = new NetworkCredential("user", "password");
</code></pre>

It is successful.

blocks|key|1070581|text|在下面的代码中，我们不需要对凭证进行硬编码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1070582|service.Proxy+=+WebRequest.DefaultWebProxy;
service.Credentials+=+System.Net.CredentialCache.DefaultCredentials;+;
service.Proxy.Credentials+=+System.Net.CredentialCache.DefaultCredentials;|code-block|syntax|javascript|1070583|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In following code, we don't need to hard code the credentials.

<pre><code>service.Proxy = WebRequest.DefaultWebProxy;
service.Credentials = System.Net.CredentialCache.DefaultCredentials; ;
service.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
</code></pre>

blocks|key|1070598|text|只需将此添加到配置即可|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1070599|<system.net>
++++<defaultProxy+useDefaultCredentials="true"+>
++++</defaultProxy>
</system.net>|code-block|syntax|javascript|1070600|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Just add this to config 

<pre><code>&lt;system.net&gt;
 &lt;defaultProxy useDefaultCredentials="true" &gt;
 &lt;/defaultProxy&gt;
&lt;/system.net&gt;
</code></pre>

blocks|key|1070624|text|我想写这个答案，因为上面什么都不起作用&您不想指定代理位置。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1070625|如果您使用的是httpClient，那么请考虑以下内容。|offset|length|style|CODE|1070626|HttpClientHandler+handler+=+new+HttpClientHandler();

IWebProxy+proxy+=+WebRequest.GetSystemWebProxy();
proxy.Credentials+=+CredentialCache.DefaultCredentials;
handler.Proxy+=+proxy;

var+client+=+new+HttpClient(handler);
//+your+next+steps...|code-block|syntax|javascript|1070627|如果你在使用HttpWebRequest|1070628|HttpWebRequest+request+=+(HttpWebRequest)WebRequest.Create(uri+%2B+_endpoint);

IWebProxy+proxy+=+WebRequest.GetSystemWebProxy();
proxy.Credentials+=+CredentialCache.DefaultCredentials;
request.Proxy+=+proxy;|1070629|Kind+referencce：https://medium.com/@siriphonnot/the-remote-server-returned-an-error-407-proxy-authentication-required-86ae489e401b|1070630|entityMap|0|LINK|mutability|MUTABLE|url|https://medium.com/@siriphonnot/the-remote-server-returned-an-error-407-proxy-authentication-required-86ae489e401b^0|0|7|A|0|0|6|E|0|0|G|36|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@$D|12|E|13|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|14|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|15|8|@$D|16|E|17|F|G]]|9|@]|A|$]]|$1|O|3|P|5|J|7|18|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|19|8|@]|9|@$D|1A|E|1B|1|1C]]|A|$]]|$1|S|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

Thought of writing this answer as nothing worked from above &amp; you don't want to specify proxy location.
If you're using <code>httpClient</code> then consider this.
<pre><code>HttpClientHandler handler = new HttpClientHandler();

IWebProxy proxy = WebRequest.GetSystemWebProxy();
proxy.Credentials = CredentialCache.DefaultCredentials;
handler.Proxy = proxy;

var client = new HttpClient(handler);
// your next steps...
</code></pre>
And if you're using <code>HttpWebRequest</code>:
<pre><code>HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri + _endpoint);

IWebProxy proxy = WebRequest.GetSystemWebProxy();
proxy.Credentials = CredentialCache.DefaultCredentials;
request.Proxy = proxy;
</code></pre>
Kind referencce: <a href="https://medium.com/@siriphonnot/the-remote-server-returned-an-error-407-proxy-authentication-required-86ae489e401b" rel="nofollow noreferrer">https://medium.com/@siriphonnot/the-remote-server-returned-an-error-407-proxy-authentication-required-86ae489e401b</a>

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

<pre><code>myProxy.Credentials = NetworkCredential("user", "password", "domain");
</code></pre>

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. 

<pre class="lang-xml prettyprint-override"><code>&lt;system.net&gt;
 &lt;defaultProxy enabled="true" useDefaultCredentials="true"&gt;
 &lt;bypasslist&gt;
 &lt;clear /&gt;
 &lt;/bypasslist&gt;
 &lt;proxy proxyaddress="myproxy:9000"
 usesystemdefault="false"
 bypassonlocal="true"
 autoDetect="False" /&gt;
 &lt;/defaultProxy&gt;
&lt;/system.net&gt;
</code></pre>

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

身份验证

服务器

防火墙

当我调用一个web服务时，我得到了这个错误：“远程服务器返回错误：(407)需要代理身份验证”。我得到了大概的想法，我可以通过添加myProxy.Credentials = NetworkCredential("user", "password", "domain");或者在代码中使用DefaultCredential...

问远程服务器返回错误：(407)需要代理身份验证
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