无法访问OWIN自托管服务 - IntegratedWindowsAuthentication - 401

Question

我有一个OWIN Web API（控制台应用程序）。使用IntegratedWindowsAuthentication安全保护：

$puja_sam     = explode(',', $puja_samagri);

foreach ($puja_sam as $samagri_id){

$samg = $this->crud_model->get_puja_samagri_by_id($samagri_id);
}

foreach ($samg as $row){


?>

我可以使用SOAPUI和NTLM身份验证进行连接。它运作得很好。

当我尝试通过.Net连接时，我得到了401。

/// <summary>
/// This code configures Web API. The Startup class is specified as a type
/// parameter in the WebApp.Start method.
/// </summary>
/// <param name="appBuilder">app builder.</param>
public void Configuration(IAppBuilder appBuilder)
{
    // Configure Web API for self-host. 

    HttpConfiguration config = new HttpConfiguration();

    HttpListener listener = (HttpListener)appBuilder.Properties["System.Net.HttpListener"];
    listener.AuthenticationSchemes = AuthenticationSchemes.IntegratedWindowsAuthentication;

    config.Routes.MapHttpRoute(
        name: "DefaultApi",
        routeTemplate: "api/{controller}/{id}",
        defaults: new { id = RouteParameter.Optional }
    );

    appBuilder.UseWebApi(config);
}

我做错了什么？ ： - （