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I have a custom login in Sharepoint 2010 using claims-based authentication. User authentication works just fine but my custom sign out method doesn't. I have tried several solutions but my authentication cookie (federation) is still there. Why?

This will not work:

FormsAuthentication.SignOut();

Not this:

FederatedAuthentication.SessionAuthenticationModule.SignOut();
FederatedAuthentication.SessionAuthenticationModule.DeleteSessionTokenCookie();

Nor will this:

var authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
if (authCookie != null)
{
    HttpCookie cookie = new HttpCookie(authCookie.Name);
    cookie.Expires = DateTime.Now.AddDays(-1d);
    cookie.Domain = domain;
    Response.Cookies.Add(cookie);
}

How do I delete my FedAuth cookie? My cookie is not persistent. Still the only way to remove my auth cookie is deleting it manually in my browser or closing it down.

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1 Answer 1

up vote 1 down vote

We had some trouble with this while using WIF. I'm don't know if your SharePoint implementation uses WIF but, if it does, this is an alternative method that may help:

WSFederationAuthenticationModule authModule = FederatedAuthentication.WSFederationAuthenticationModule;
                string signoutUrl = (WSFederationAuthenticationModule.GetFederationPassiveSignOutUrl(authModule.Issuer, authModule.Realm, null));
                Response.Redirect(signoutUrl);
share|improve this answer
    
Thanks! No I don't use WIF, didn't even know about it. Looks very intresting thought, I will check it up! –  kolback May 17 '13 at 19:01

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