title: Type or namespace name 'OwinStartupAttribute' could not be found
body: <h1>Error</h1>
  <p><strong>The type or namespace name 'OwinStartupAttribute' could not be found<br />
  The type or namespace name 'OwinStartup' could not be found</strong></p>
  <h2>Code</h2>
  <pre><code>using Microsoft.Owin;
  using Owin;
  
  [assembly: OwinStartup(typeof(Employee.Web.Models.Startup))]
  namespace Employee.Web.Models.Startup
  {
      public class Startup
      {
          public void Configuration(IAppBuilder app)
          {
              app.MapSignalR();
          }
      }
  }  
  </code></pre>
  <p>Any help would be appreciated.</p>
  <p>Using:</p>
  <ul>
  <li>.net 4.0</li>
  <li>MVC 4</li>
  <li>Microsoft.AspNet.SignalR.SystemWeb (1.1.0.0)</li>
  <li>Microsoft.Owin (2.1.0.0)</li>
  <li>Microsoft.Owin.Host.SystemWeb (2.1.0.0)</li>
  <li>Owin (1.0.0.0)</li>
  <li>Visual Studio 2013</li>
  </ul>
  <p>Installed singlar after Referencing Microsoft.Owin using the command  <code>Install-Package Microsoft.AspNet.SignalR -Version 1.1.3</code></p>
  <p><strong>UPDATE:</strong>
  I removed <code>[assembly:..</code>
  and also added this in web.config:
  <code>&lt;add key=&quot;owin:AppStartup&quot; value=&quot;Employee.Web.Models.Startup&quot; /&gt;</code></p>
  <p>The error now says<br />
  <strong>'Owin.IAppBuilder' does not contain a definition for 'MapSignalR' and no extension method 'MapSignalR' accepting a first argument of type 'Owin.IAppBuilder' could be found</strong></p>