WriteSessionTokenToCookie

ClaimsIdentityCollection identities = new ClaimsIdentityCollection();
identities.Add(new ClaimsIdentity(claims, "Forms"));
var principal = new ClaimsPrincipal(identities);

var token = new SessionSecurityToken(principal);
var sam = FederatedAuthentication.SessionAuthenticationModule;
sam.WriteSessionTokenToCookie(token);

HttpContext.Current.Response.Redirect("~/Default.aspx");

This works when using IIS on our web server, however, on IIS Express, it seems to go into a never ending loop, like the session token isn't being written to the cookie. Any idea why?