Asp.Net核心Windows身份验证在IIS中不起作用

当IIS身份验证启用并在IIS Express或IIS中运行时，Asp.Net Core似乎无法识别来自呼叫 context?.User?.Identity?.Name 的用户 .

所需行为：在IIS和/或IIS Express中启用Windows身份验证和匿名身份验证，Asp.Net Core应自动识别Windows用户 .

实际行为：当我在IIS或IIS Express中启用Windows和匿名身份验证时，用户名为null . 当我禁用匿名身份验证或调用 HttpContext.ChallengeAsync(IISDefaults.AuthenticationScheme) 时，我得到一个登录提示，我不想要 .

我的理解是，即使我想将它用于Active Directory，我也不需要活动目录或域来验证Windows用户 .

环境：

• Windows 8.1（不在域上）

• IIS 8.5 / Visual Studio 2017 w / IIS Express
  安装了

• Windows身份验证安全功能

• Windows身份验证＆（使用NTLM提供程序）和匿名身份验证已启用

• 以本地帐户用户身份登录

依赖关系：

• Microsoft.AspNetCore.All 2.0.8

启动：

public void ConfigureServices(IServiceCollection services)
{
    services.Configure<IISOptions>(iis =>
    {
        iis.AuthenticationDisplayName = "Windows";
        iis.AutomaticAuthentication = true;
    });

    services.AddAuthentication(IISDefaults.AuthenticationScheme);
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }

    app.UseAuthentication();
    app.Run(async (context) =>
    {
        await context.Response.WriteAsync(JsonConvert.SerializeObject(new
        {                
            UserName = context?.User?.Identity?.Name
        }));
    });

launchSettings.json：

{
  "iisSettings": {
    "windowsAuthentication": true,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:51682/",
      "sslPort": 0      
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }
}

web.config中：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.webServer>
    <handlers>
      <remove name="aspNetCore" />
      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified" />
    </handlers>
    <aspNetCore forwardWindowsAuthToken="true" processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout" />
  </system.webServer>
</configuration>

applicationhost.config :( IIS Express）

基于这篇文章：https://docs.microsoft.com/en-us/iis/configuration/system.webServer/security/authentication/windowsAuthentication/

<authentication>
  <anonymousAuthentication enabled="true" userName="" />
  <basicAuthentication enabled="false" />
  <clientCertificateMappingAuthentication enabled="false" />
  <digestAuthentication enabled="false" />
  <iisClientCertificateMappingAuthentication enabled="false"></iisClientCertificateMappingAuthentication>
  <windowsAuthentication enabled="true">
    <providers>
      <add value="NTLM" />
    </providers>
  </windowsAuthentication>
</authentication>