IIS服务器上.NET应用HTTPS访问故障排查求助

大家好，我碰到个棘手的问题，想请各位大佬帮忙分析下：

我有一台IIS服务器，需要的组件都已经装全了。本地构建运行时HTTPS完全正常，但部署到服务器之后，HTTPS就彻底访问不了了。用端口扫描工具能看到44390端口是开放的，事件管理器也显示进程已经启动，而且HTTP是完全可以正常访问的，唯独HTTPS不行。

更奇怪的是，同一台IIS上还有个Vue3的前端项目，用的是同一个SSL证书，运行完全没问题，偏偏这个.NET应用就出问题…我实在找不到哪里错了，求各位帮忙看看！

Program.cs 代码 #

using BaseBackend.Controllers;

using Microsoft.AspNetCore.Authentication.Cookies;


var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddControllersWithViews(); // For MVC support
builder.Services.AddControllers(); // For API support

// Configure Swagger/OpenAPI
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

// Register IConfiguration for DI
//builder.Services.AddSingleton<IConfiguration>(builder.Configuration);

// Register TuningDatabaseHandler for DI
builder.Services.AddScoped<TuningDatabaseHandler>();
builder.Services.AddScoped<MyUploadedFileHandler>();
builder.Services.AddScoped<StringReplacementHandler>();
builder.Services.AddScoped<TaskHandler>();
builder.Services.AddScoped<EcuHandler>();



// Configure Authentication
builder.Services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
    .AddCookie(options =>
    {
        options.LoginPath = "/api/login";
        options.LogoutPath = "/api/logout";
        options.Cookie.HttpOnly = true;

    });

// Configure Authorization
builder.Services.AddAuthorization();

// Configure CORS
builder.Services.AddCors(options =>
{
    options.AddPolicy("AllowFrontend", builder =>
    {
        builder.WithOrigins("https://localhost")
               .AllowAnyHeader()
               .AllowAnyMethod()
               .AllowCredentials();

    });
});

builder.Services.AddHttpsRedirection(options =>
{
    options.HttpsPort = 44390; // Specify the HTTPS port where is same in IIS
});

var app = builder.Build();

// Configure the HTTP request pipeline.
app.UseSwagger();
app.UseSwaggerUI();

// Enable CORS policy
app.UseCors("AllowFrontend");

//app.UseHttpsRedirection();

// Use authentication and authorization middleware
app.UseAuthentication();
app.UseAuthorization();

app.MapControllers();

app.MapGet("/", () => "Test Page: Application is Running!");
app.Run();

appsettings.json 配置 #

{
    "Logging": {
        "LogLevel": {
            "Default": "Information",
          "Microsoft.AspNetCore": "Warning"
        }
    },
      "AllowedHosts": "*",
      "Swagger": {
        "Enabled": true
      },
      "ConnectionStrings": {
        "dbo": "Server=.\\SQLEXPRESS;Integrated Security=True;Database=dbo;"
      },
      "Kestrel": {
        "Endpoints": {
            "Https": {
                "Url": "https://localhost:44390" // Set HTTPS to listen on port 44390
          }
        }
    }
}

备注：内容来源于stack exchange，提问作者Yusuf Keks