title: Thinktecture identity server 3 Single Sign Out
body: <p>I hope some one point me towards right direction.
  I have setup Identity server 3 on IIS and 2 different MVC clients to this Identity server.
  I am little confused about SIngle Sign out. I was hoping to achieve single sign out.
  However when i login, each client web site setup its own aspNet session cookie.
  When i logout from one client, the other client still retain its session(because of its own session cookie).
  How can i achieve Single sign out for multiple applications with different domains.</p>