title: OWIN Startup Class Missing
body: <p>I'm getting this error as my project is not able to find the reference for <code>OWIN</code> startup class. I've even installed all the OWIN reference packages through Nuget still getting the same issue. I'm using <code>Visual Studio 2012</code> and <code>MVC4</code>. </p>
  
  <p>The following errors occurred while attempting to load the app.</p>
  
  <blockquote>
    <ul>
    <li>No assembly found containing an OwinStartupAttribute.</li>
    <li>No assembly found containing a Startup or [AssemblyName].Startup class. To disable OWIN startup discovery, add the appSetting
    owin:AutomaticAppStartup with a value of "false" in your web.config.
    To specify the OWIN startup Assembly, Class, or Method, add the
    appSetting owin:AppStartup with the fully qualified startup class or
    configuration method name in your web.config.</li>
    </ul>
  </blockquote>