forms authentication cookie replacement

[Mogen1000]

I have a problem with users being kicked out after the forms authentication ticket is renewed and the old one has expired.The first ticket i get when i signed in is:Ticket: A094D6F0401A5B6D97688198B09F17B03D209............Ends: Thu, 28 Mar 2013 08:56:33 GMTAnd after some time the ticket is renewed and i get this cookie: (The cookie expire when the ticket is expire, so no problem there) Ticket: 215373E662852AD0CC540AC27F547787.............Ends: Thu, 28 Mar 2013 08:58:17 GMTThis ticket is renewed by a javascript reloader in the background for the user. Now, if i update the page, i will be kicked out, why?When i renew the ticket i use this:\[code\] var Id = (FormsIdentity)HttpContext.Current.User.Identity; var Ticket = Id.Ticket; var NewAuthTicket = FormsAuthentication.RenewTicketIfOld(Ticket); HttpContext.Current.User = new System.Security.Principal.GenericPrincipal(new FormsIdentity(NewAuthTicket), new[] {""}); if (NewAuthTicket != null && NewAuthTicket.Expiration > Ticket.Expiration) { // Create the (encrypted) cookie. var ObjCookie = new HttpCookie(FormsAuthentication.FormsCookieName, FormsAuthentication.Encrypt(NewAuthTicket)) { HttpOnly = true, Expires = NewAuthTicket.Expiration, Secure = FormsAuthentication.RequireSSL }; // Add the cookie to the list for outbound response. HttpContext.Current.Response.Cookies.Add(ObjCookie); Ticket = NewAuthTicket; }\[/code\]Is there any solution for this?UPDATE:When i set the cookie for the first time i use this:var ExpiryDate = !rememberMe ? DateTime.Now.AddMinutes(cookieTimeoutHour) : DateTime.Now.AddYears(1);\[code\] //create a new forms auth ticket var Ticket = new FormsAuthenticationTicket(2, ui.UserNr.ToString(CultureInfo.InvariantCulture), DateTime.Now, ExpiryDate, true, String.Empty); //encrypt the ticket var EncryptedTicket = FormsAuthentication.Encrypt(Ticket); //create a new authentication cookie - and set its expiration date var AuthenticationCookie = new HttpCookie(FormsAuthentication.FormsCookieName, EncryptedTicket) { Expires = Ticket.Expiration, HttpOnly = true, Secure = FormsAuthentication.RequireSSL }; Current.Response.Cookies.Add(AuthenticationCookie);\[/code\]