I hit exactly the same problem as you today and struggled for a day to fix the problem.
With fiddler, I noticed that the 'FedAuth' Cookie was removed when I signout but not the '.ASPXAUTH' cookie, which was created by the ChangePassword aspnet control. In other words, the presence of the '.ASPXAUTH' cookie most probably caused the crash
of the claim provider of Sharepoint Server. So deleting this cookie after successful password change should solve the problem. Someone suggested using the code request.cookies.clear(), but this did not work for me. Finally, I follow the method
of deleting cookie from technet and the problem was gone. Here the changes I made:
on ChangePassword.aspx, add the OnChangedPassword event:
<asp:Content ID="Main" ContentPlaceHolderID="PlaceHolderMain" runat="server">
<asp:ChangePassword id="myChangePassword" OnChangedPassword="ChangePassword_Clear"
...
On ChangePassword.apsx.cs, add the codes to delete the cookie '.ASPXAUTH'
namespace CustomLogin.Layouts
{
public partial class ChangePassword : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
myChangePassword.UserName = User.Identity.Name.Split('|')[2];
}
protected void ChangePassword_Clear(object sender, EventArgs e)
{
HttpCookie aspCookie = new HttpCookie(".ASPXAUTH");
aspCookie.Expires = DateTime.Now.AddDays(-1);
Response.Cookies.Add(aspCookie);
}
}
}
Hope this help.
