自动发现服务无法位于 C# 中，但适用于 Outlook答案

【问题标题】：The Autodiscover service couldn't be located in C# but works for Outlook自动发现服务无法位于 C# 中，但适用于 Outlook
【发布时间】：2014-09-23 17:48:18
【问题描述】：

尝试了我发现的所有内容，并在 EWS 服务上使用 AutodiscoverUrl 调用不断收到此错误。

已尝试提供 webcredentials、networkcredentials，但没有。如果我自己设置 service.Url 属性，那么它可以工作。我可以访问 EWS 呼叫没有问题。

这是出错时的调用堆栈。

A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.ObjectDisposedException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.Sockets.SocketException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException'     occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.ObjectDisposedException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'Microsoft.Exchange.WebServices.Dns.DnsException' occurred in Microsoft.Exchange.WebServices.dll
A first chance exception of type 'Microsoft.Exchange.WebServices.Data.AutodiscoverLocalException' occurred in Microsoft.Exchange.WebServices.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.ObjectDisposedException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.Sockets.SocketException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.Security.Authentication.AuthenticationException' occurred in System.dll
A first chance exception of type 'System.ObjectDisposedException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'System.Net.WebException' occurred in System.dll
A first chance exception of type 'Microsoft.Exchange.WebServices.Dns.DnsException' occurred in Microsoft.Exchange.WebServices.dll
A first chance exception of type 'Microsoft.Exchange.WebServices.Data.AutodiscoverLocalException' occurred in Microsoft.Exchange.WebServices.dll


An unhandled exception of type 'Microsoft.Exchange.WebServices.Data.AutodiscoverLocalException' occurred in Microsoft.Exchange.WebServices.dll

Additional information: The Autodiscover service couldn't be located.

我还检查了我可以通过 dns 条目自动发现 ping Exchange 服务器。我已经检查了 SCP 的广告，它看起来没问题。 Outlook 可以发现自动发现没有问题。只有我的代码不能。

以防万一，我的所有机器都是虚拟子网上的 Azure vm。

我的代码：

ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2013_SP1);
service.AutodiscoverUrl("Lyynx@ocean.lythixdesigns.com"); // Exception is thrown here

【问题讨论】：

您可以尝试的两件事是首先启用跟踪，这将提供更多信息，然后是堆栈跟踪。另一件事是使用 testconnectivity.microsoft.com 测试您的自动发现配置
我启用了跟踪，它甚至不调用跟踪器。我通过使用工作代码跟踪它来验证跟踪器是否正常工作。我查看了您共享的测试页面，但我需要弄清楚如何让它在 Internet 上运行，对吗？还是该页面在 Intranet 上工作？会再看一遍
不，这在 Intranet 上不起作用，您必须将自动发现暴露在外部，这对于大多数人来说通常是这种情况（否则 Activesync 等将不起作用）。另一个测试是尝试ewseditor.codeplex.com，这将允许您在代码之外测试托管 API 和 EWS。
方便的工具。我下载了它并在我的开发虚拟机上运行。 InternalEwsUrl：mantaray.ocean.lythixdesigns.com/EWS/Exchange.asmx 这是我输入的有效网址。
您尝试过自动发现查看器吗？（从“工具”菜单中）这将向您显示自动发现过程的更多调试版本

标签： exchangewebservices exchange-server-2013

【解决方案1】：

在反编译和调试抛出的异常后，我发现由于使用了自签名证书，它不允许使用自动发现 url。

http://blogs.msdn.com/b/robert_mcmurray/archive/2013/11/15/how-to-trust-the-iis-express-self-signed-certificate.aspx

此 URL 显示如何将证书复制到 Internet Explorer 中的受信任的根证书颁发机构文件夹中。我以管理员身份运行 IE 并将其复制进去。我的代码现在可以工作了。它又遇到了一个异常，说它没有经过身份验证，但我认为这就是它使用登录凭据的地方。

所以信任证书是我的问题的答案。

【讨论】：