ASP.Net WebAPI OWIN: Why would Request.GetOwinContext() return null?

Question

In my production code we\'re having a problem where Request.GetOwinContext() always returns null.

I setup a small test WebAPI controller to try and isolate the probl

Answer 1

Another cause (especially after upgrading form ASP.NET MVC4 and / or Empty WebApi Template) is missing Startup.cs file in the root of WebAPI project.

Also, make sure that you have installed Microsoft.Owin.Host.SystemWeb package.

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Owin;
using Owin;

[assembly: OwinStartup(typeof(TestMVC5.Startup))]

namespace TestMVC5
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
        }
    }
}