Signout in SPClaimsUtility

Question

We created two sites, one with FBA and other one is Windows
authentication. Code base remain same for both sites, only authentication will get differ. Each site has different signout page and authentication pages. FBA authentication has been implemented using
SPClaimsUtility.AuthenticateFormsUser method.
In FBA, Logged in User has to redirect to login page after one of our customized validation. For that, I've implemented the following code, but I'm getting an Access Denied error saying that singed user still logged in. It seems logged in user didn't logging
out yet.
FormsAuthentication.SignOut();
if (HttpContext.Current.Session != null) HttpContext.Current.Session.Abandon();
// clear authentication cookie
HttpCookie cookie1 = new HttpCookie(FormsAuthentication.FormsCookieName, "");
cookie1.Expires = DateTime.Now.AddYears(-1);
cookie1.Path = FormsAuthentication.FormsCookiePath;
HttpContext.Current.Response.Cookies.Add(cookie1);
// clear session cookie (not necessary for your current problem but i would recommend you do it anyway)
HttpCookie cookie2 = new HttpCookie("ASP.NET_SessionId", "");
cookie2.Expires = DateTime.Now.AddYears(-1);
HttpContext.Current.Response.Cookies.Add(cookie2);
FormsAuthentication.RedirectToLoginPage();
And I tried by adding below line in above said code after removing FormsAuthentication.SignOut()
line alone. Now, I redirected to login page, but when I'm logged in with the same user getting an error saying that the user which I logged in now it's already logging in. It seems logged in user didn't logging out yet.
FederatedAuthentication.SessionAuthenticationModule.SignOut();
Could you please assist me how signout needs to be implemented for the FBA authentication implemented using
SPClaimsUtility.AuthenticateFormsUser method.

Answer 1

Hi Ajit,
See this similar thread (with answers):
https://social.technet.microsoft.com/Forums/en-US/5bf1dfdf-cc1c-422c-9c25-094fc7aaad61/user-details-retained-if-user-does-not-signout-and-closes-the-browser-and-opens-page-again?forum=sharepointgeneralprevious
Nico Martens
SharePoint/Office365/Azure Consultant