ASP.NET core 1.1 HTTP Error 502.5 - Process Failure on startup

Question

When I try and startup my ASP.NETcore 1.1 on my server I get the error:

HTTP Error 502.5 - Process Failure

Common causes of this issue:

The application process failed to start The application process started but then stopped The application process started but failed to listen on the configured port

I checked the event viewer.

Application: MyApp.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.IO.FileLoadException at MyApp.Program.Main(System.String[])

MyApp.Program.Main is

public class Program
    {
        public static void Main(string[] args)
        {
            Console.Title = "IdentityServer";

            var host = new WebHostBuilder()
                .UseKestrel()
                .UseUrls("http://localhost:5000")
                .UseContentRoot(Directory.GetCurrentDirectory())
                .UseIISIntegration()
                .UseStartup<Startup>()
                .Build();

            host.Run();
        }
    }

This is based on the Identity Server 4 code.

Stdout has

Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly 'Microsoft.AspNetCore.Hosting, Version=1.1.0.0

I have added Microsoft.AspNetCore.Hosting via NuGet to my project. Microsoft.AspNetCore.Hosting.dll is in my published files...

After doing some more digging I found this post Can't load Microsoft.AspNetCore.Hosting 1.1.0.0 #1826. It suggests to remove app.AddBrowserLink();. AddBrowserLink() is not used at all in my code.

By commenting out code the error seems to come when I reference a project that is not .NET Core based that depends on traditional .NET.

I am using Visual Studio 2017.

Have you tried adding a reference to `Microsoft.AspNetCore.Server.Kestrel`? — Mashton, Apr 03 '17 at 09:10

score 0 · Accepted Answer · answered Apr 03 '17 at 11:13

Hansleman had the answer from his post How to reference an existing .NET Framework Project in an ASP.NET Core 1.0 Web App.

I had created an ASP.NET Core 1.1 app pointing to .NET Core. I recreated my website as ASP.NET Core 1.1 and had it point to .NET Framework and then the code that was failing ran.

ASP.NET core 1.1 HTTP Error 502.5 - Process Failure on startup

1 Answers1