title: ASP.NET MVC 5 App using OWIN with Facebook log-in throwing reference error
body: <p>I"m following along with this tutorial:</p>
  
  <p><a href="http://www.asp.net/mvc/tutorials/mvc-5/create-an-aspnet-mvc-5-app-with-facebook-and-google-oauth2-and-openid-sign-on" rel="nofollow">http://www.asp.net/mvc/tutorials/mvc-5/create-an-aspnet-mvc-5-app-with-facebook-and-google-oauth2-and-openid-sign-on</a></p>
  
  <p>I'm attempting to log-in using Facebook. I copied this code almost verbatim:</p>
  
  <pre><code>using Microsoft.AspNet.Identity;
  using Microsoft.Owin;
  using Microsoft.Owin.Security.Cookies;
  using Microsoft.Owin.Security.Forms;
  using Owin;
  
  namespace WineNight
  {
      public partial class Startup
      {
          // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
          public void ConfigureAuth(IAppBuilder app)
          {
              // Enable the application to use a cookie to store information for the signed in user
              // and to use a cookie to temporarily store information about a user logging in with a third party login provider
              app.UseSignInCookies();
  
              app.UseFacebookAuthentication(
                 appId: "000000000000000",
                 appSecret: "000000000000000");
  
              app.UseGoogleAuthentication();
          }
      }
  }
  </code></pre>
  
  <p>I'm getting an error when I call <code>UseSignInCookies</code>:</p>
  
  <p><code>Owin.IAppBuilder</code> does not contain a definition for <code>UseSignInCookies</code> and no extension method <code>UseSignInCookies</code> accepting a first argument of type <code>Owin.IAppBuilder</code> could be found (are you missing a using directive or an assembly reference?)</p>
  
  <pre><code>C:\users\chris\documents\visual studio 2013\Projects\WineNight\WineNight\App_Start\Startup.Auth.cs
  </code></pre>
  
  <p>I installed the beta package for <code>Microsoft.Owin.Security.Forms</code>, but I'm still getting this error. Where does this extension method reside? </p>