EWS无法在Powershell中工作

因此，我设置了相同的Exchange Web服务示例：

作为控制台应用程序运行的C版本：

class Program
{
    static void Main(string[] args)
    {
        var es = new ExchangeService(ExchangeVersion.Exchange2010_SP2)
        {
            TraceEnabled = true,
            UseDefaultCredentials = true,
            Url = new Uri("https://mail.myServer.com/EWS/Exchange.asmx")
        };

        ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, errors) => true;

        var inboxId = new FolderId(WellKnownFolderName.Inbox);
        Folder inboxFolder = null;
        try
        {
            inboxFolder = Folder.Bind(es, inboxId);
        } catch(Exception e)
        {
            Console.Out.WriteLine(e.Message);
        }

        if (inboxFolder == null)
        {
            Console.Out.WriteLine("FAILED");
            return;
        }
        Console.Out.WriteLine("Total stuff: [{0}]", inboxFolder.TotalCount);
        Console.In.ReadLine();
    }
}

Powershell版本：

clear
# Load EWS Managed API
Import-Module "C:\Program Files\Microsoft\Exchange\Web Services\2.2\Microsoft.Exchange.WebServices.dll";

$EWSService = new-object Microsoft.Exchange.WebServices.Data.ExchangeService([Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2010_SP2)
$EWSService.traceenabled = $true
$EWSService.UseDefaultCredentials = $true 
$EWSService.Url = New-Object Uri("https://mail.myServer.com/EWS/Exchange.asmx")

[System.Net.ServicePointManager]::ServerCertificateValidationCallback = { $true };

$InboxID = new-object Microsoft.Exchange.WebServices.Data.FolderId([Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::Inbox)
Try {$InboxFolder = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($EWSservice,$InboxID)}
Catch [Exception] {
    Write-Host $_.Exception.Message
}    

两者都运行在同一台机器上，同一个用户。控制台应用程序连接并返回数据。powershell版本得到了一条非常有用的消息：

The request failed. The underlying connection was closed: An unexpected error occurred on a send.

---

检查异常不会提供任何额外的信息。两个版本都引用相同的EWS托管api。有人知道为什么会这样吗？

我想我看到了问题所在

# Load EWS Managed API
Import-Module "C:\Program Files\Microsoft\Exchange\Web Services\2.2\Microsoft.Exchange.WebServices.dll";

这不是Powershell模块

我使用Add Type在EWS脚本中加载该.dll，如下所示：

   Add-Type -Path 'C:\Program Files\Microsoft\Exchange\Web Services\2.2\Microsoft.Exchange.WebServices.dll'

---

根据Johnyjob的消息使用

    ## Code From http://poshcode.org/624
## Create a compilation environment
$Provider=New-Object Microsoft.CSharp.CSharpCodeProvider
$Compiler=$Provider.CreateCompiler()
$Params=New-Object System.CodeDom.Compiler.CompilerParameters
$Params.GenerateExecutable=$False
$Params.GenerateInMemory=$True
$Params.IncludeDebugInformation=$False
$Params.ReferencedAssemblies.Add("System.DLL") | Out-Null

$TASource=@'
  namespace Local.ToolkitExtensions.Net.CertificatePolicy{
    public class TrustAll : System.Net.ICertificatePolicy {
      public TrustAll() { 
      }
      public bool CheckValidationResult(System.Net.ServicePoint sp,
        System.Security.Cryptography.X509Certificates.X509Certificate cert, 
        System.Net.WebRequest req, int problem) {
        return true;
      }
    }
  }
'@ 
$TAResults=$Provider.CompileAssemblyFromSource($Params,$TASource)
$TAAssembly=$TAResults.CompiledAssembly

## We now create an instance of the TrustAll and attach it to the ServicePointManager
$TrustAll=$TAAssembly.CreateInstance("Local.ToolkitExtensions.Net.CertificatePolicy.TrustAll")
[System.Net.ServicePointManager]::CertificatePolicy=$TrustAll

## end code from http://poshcode.org/624

而不是

[System.Net.ServicePointManager]::ServerCertificateValidationCallback = { $true };

---

我不是EWS方面的专家，但[System.Net.ServicePointManager]：：ServerCertificateValidationCallback={$true}；看起来不合适。我只看到在使用AutoDiscover查找Exchange服务器时使用此选项，但您已经在URI中硬编码了服务器名称。从我对其使用的理解来看，这用于在服务器使用未签名证书时忽略证书错误。即使我在这方面错了，代码在.NET中工作，而不是在powershell中，因此无论哪种方式，回调都不应该是问题，只是为了确保我尝试了这两种方法。我今天也遇到了同样的问题。我注意到标准Windows PowerShell控制台和SharePoint 2013 PowerShell控制台中的行为有所不同。特别是，所描述的解决方案适用于Windows PowerShell，但不适用于SharePoint one。请注意，链接似乎已断开，我从谷歌缓存中提取了该页面。非常感谢您的建议。不幸的是，当我绑定这个解决方案时，我得到了相同的错误。