Cannot logoff of identity MVC 5 application

Question

I'm making a new (empty template) ASP.NET MVC 5 application and I cannot logoff of this app. My logoff Action:

public ActionResult LogOff()
{
    if (User.Identity.IsAuthenticated)
    {
        //break here
    }
    try
    {
        AuthenticationManager.SignOut();
        if (User.Identity.IsAuthenticated || Request.IsAuthenticated)
        {
            //break here;
        }
    }
    return RedirectToAction("Login", "Account");
}

Startup class:

public partial class Startup
{
    public void ConfigureAuth(IAppBuilder app)
    {
        app.UseCookieAuthentication(new CookieAuthenticationOptions
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            LoginPath = new PathString("/Account/Login")
        });
        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
    }
}

Application Context:

 public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
 {
    public ApplicationDbContext()
        : base("DefaultConnection", false)
    {
    }
 } 

Connection string:

<connectionStrings>
<add name="DefaultConnection" connectionString="Server=.;Database=DataTest;Trusted_Connection=True;" providerName="System.Data.SqlClient" />
</connectionStrings>

The action LogOff() executes without problems and redirects me to the 'Login' action but I am still logged in. What is wrong with it?

Answer 1

Most of your code seems good to me. I would guess that something is wrong in your action method. Normally the only thing to do here is

public ActionResult LogOff()
{
    AuthenticationManager.SignOut();

    return RedirectToAction("Login", "Account");
}

I don't know if the if-blocks are crucial to your sign out process, but this two-liner is the only thing you have to do. If it is crucial you should check via the debugger if the SignOut method is hit.