Web客户端生成（401）未经授权错误 [英] WebClient generates (401) Unauthorized error

问题描述

我有一个窗口服务下列code运行：

I have the following code running in a windows service:

WebClient webClient = new WebClient();
webClient.Credentials = new NetworkCredential("me", "12345", "evilcorp.com");
webClient.DownloadFile(downloadUrl, filePath);

每一次，我得到下面的异常

Each time, I get the following exception

{"The remote server returned an error: (401) Unauthorized."}

使用以下内部异常：

{"The function requested is not supported"}

我知道肯定凭证是有效的，事实上，如果我去downloadUrl在我的网页浏览器，并把我的凭据evilcorp.com \\我的密码12345，它下载的罚款。

I know for sure the credentials are valid, in fact, if I go to downloadUrl in my web browser and put in my credentials as evilcorp.com\me with password 12345, it downloads fine.

什么是奇怪的是，虽然如果我12345指定我的凭据[e-mail]，似乎要失败的。

What is weird though is that if I specify my credentials as [e-mail] with 12345, it appears to fail.

有没有办法格式化凭据？

Is there a way to format credentials?

推荐答案

显然你正在运行的问题，因为默认的加密已经操作系统之间变化的操作系统。
此博客有更多的细节：<一href=\"http://ferozedaud.blogspot.com/2009/10/ntlm-auth-fails-with.html\">http://ferozedaud.blogspot.com/2009/10/ntlm-auth-fails-with.html

Apparently the OS you are running on matters, as the default encryption has changed between OSes. This blog has more details: http://ferozedaud.blogspot.com/2009/10/ntlm-auth-fails-with.html

这显然也已经对计算器这里讨论：<一href=\"http://stackoverflow.com/questions/1443617/407-authentication-required-no-challenge-sent/1482442#1482442\">http://stackoverflow.com/questions/1443617/407-authentication-required-no-challenge-sent/1482442#1482442

This has apparently also been discussed on stackoverflow here: http://stackoverflow.com/questions/1443617/407-authentication-required-no-challenge-sent/1482442#1482442

我建议阅读博客首先作为知识精华是存在的。

I would suggest read the blog first as the distilled knowledge is there.

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