title: Shibboleth Single Sign Out
body: <p>I'm using shibboleth authentication in my application, and when user clicks Logout button, he will be directed to the ~/Shibboleth.sso/Logout link, it seems like a success when button clicked, but if I try to login using shibboleth one more time, it will not redirect to the Shibboleth Login page! instead it shows the previously logged on user (that I've logged out).
  So session seems to be persistent even after logout!
  But if before signing in again, I closed my browser, the user is redirected normally to the Shibboleth Login page.
  So it seems like a session state or cookie problem!
  I've used the following code to solve it:</p>
  
  <pre><code>if (Request.Cookies["shibsession"] != null)
                  {
                      HttpCookie myCookie = new HttpCookie("shibsession");
                      myCookie.Expires = DateTime.Now.AddDays(-1);
                      Response.Cookies.Add(myCookie);
                  }
                  Response.Redirect("~/Shibboleth.sso/Logout");
  </code></pre>
  
  <p>But it's not working!
  Can any one help?</p>