Can't get my Asp.Net Core project to work published to folder on localhost

Question

My Asp.Net Core 2.0 MVC app works fine when I run it from Visual Studio > IIS Express, but after I publish to folder (c:\inetpub\TSGOnline) (TSGOnline is my solution's name), I just see this error message in the browser: It tells me that changing environment to Production, it will work

But in Visual Studio, I have indeed set the ASPNETCORE_ENVIRONMENT to Production. As far as I can tell, the environment is Production

My OS is Windows 10, IIS version is 10.0.15063.0.

Program.cs:


    using System.IO;
    using Microsoft.AspNetCore;
    using Microsoft.AspNetCore.Hosting;
    namespace TSGOnline
    {
        public class Program
        {
            public static void Main(string[] args)
            {
                BuildWebHost(args).Run();
            }

            public static IWebHost BuildWebHost(string[] args) =>
                WebHost.CreateDefaultBuilder(args)
                    .UseKestrel()
                    .UseContentRoot(Directory.GetCurrentDirectory())
                    .UseIISIntegration()
                    .UseStartup()
                    .Build();
        }
    }

Startup.cs:


    using Microsoft.AspNetCore.Builder;
    using Microsoft.AspNetCore.Hosting;
    using Microsoft.Extensions.Configuration;
    using Microsoft.Extensions.DependencyInjection;
    using TSGOnline.Models;
    using Microsoft.EntityFrameworkCore;

    namespace TSGOnline
    {
        public class Startup
        {
            public Startup(IConfiguration configuration)
            {
                Configuration = configuration;
            }

            public IConfiguration Configuration { get; }

            // This method gets called by the runtime. Use this method to add services to the container.
            public void ConfigureServices(IServiceCollection services)
            {
                services.AddDbContext(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
                services.AddMvc();
            }

            // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
            public void Configure(IApplicationBuilder app, IHostingEnvironment env)
            {
                if (env.IsDevelopment())
                {
                    app.UseDeveloperExceptionPage();
                    app.UseBrowserLink();
                }
                else
                {
                    app.UseExceptionHandler("/Home/Error");
                }

                app.UseStaticFiles();

                app.UseMvc(routes =>
                {
                    routes.MapRoute(
                        name: "default",
                        template: "{controller=TSG}/{action=Index}/{id?}");
                });
            }
        }
    }

My csproj: I wasn't able to paste it as code, so had to use image

I have spent two days googling, trying to figure this one out, but being a total noob, I may not always know when the answers are right in front of me ... Please help?

Nowhere in your images it is written that changing to Production environment will make it work. — user6542823
I realise that now. It just says I will get a detailed error message. Sorry for that. — Stian
You'll get a Detailed error message if you change your environment to DEVELOPMENT. — user6542823

madoxdev madoxdev · Accepted Answer · 2017-11-19T12:53:55

For IIS application. You need to set that variable either in IIS application or system variables.

Please look at chapter setting environments

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/environments

Windows

To set the ASPNETCORE_ENVIRONMENT for the current session, if the app is started using dotnet run, the following commands are used

Command Line:
set ASPNETCORE_ENVIRONMENT=Development

PowerShell:
$Env:ASPNETCORE_ENVIRONMENT = "Development"

These commands take effect only for the current window. When the window is closed, the ASPNETCORE_ENVIRONMENT setting reverts to the default setting or machine value.

In order to set the value globally on Windows open the Control Panel > System > Advanced system settings and add or edit the ASPNETCORE_ENVIRONMENT value.

Per IIS Application Pool:

If you need to set environment variables for individual apps running in isolated Application Pools (supported on IIS 10.0+), see the AppCmd.exe command section of the Environment Variables <environmentVariables> topic in the IIS reference documentation.

Can't get my Asp.Net Core project to work published to folder on localhost

1 Answers