title: ASP.NET single page application or MVC app and 404.15
body: <p>I created a ASP.NET single page application. When I run it I get the following 404.15 error. I see the same error with an MVC application without a Web API in it also.</p>
  
  <p><img src="https://i.stack.imgur.com/bgiJ3.png" alt="enter image description here"></p>
  
  <p>I commented out the ConfigureAuth code as below:</p>
  
  <pre><code>public partial class Startup
  {
      public void Configuration(IAppBuilder app)
      {
          //ConfigureAuth(app);
      }
  }
  </code></pre>
  
  <p>Now I get another error which is below:</p>
  
  <p><img src="https://i.stack.imgur.com/3BsGC.png" alt="enter image description here"></p>
  
  <p>I tried to duplicate this on a different laptop, and I don't see a problem there.</p>
  
  <p>Is this a directory level permission issue on this particular laptop where I created the app? Appreciate anyone can shed some light on this to fix this.</p>
  
  <p><strong>UPDATE 11/9/2014</strong></p>
  
  <p>I did some further debugging and found that the applications works fine with no authentication and Windows Authentication. When the authentication is forms, I see this problem happening. As you see in the IntelliTrace, the GET request is looping back to Account/Login multiple times and finally give with a 404.15 error. I added a authorization section in the web.config to allow all users to access the resources with , I still see the errors. </p>
  
  <p>I see a major difference between how my laptop and the surface pro 2 behaving with the same application. In my surface pro 2, the home page is displayed and the redirect to account/login never happens. But in the laptop the redirection is happening to account/login. </p>
  
  <p>There are tables in the surface pro 2 created by the asp.net identity. But in my laptop there are no tables. I believe when the application starts, there is no requirement for the tables and the control should go to the home page.</p>
  
  <p>I hope anyone can provide an answer with my additional info.</p>
  
  <p><img src="https://i.stack.imgur.com/vKqDw.png" alt="OWIN"></p>