Unable to serialize the session state

Question

When putting my application on a web server and trying to \'log in\' I get the following error:

Server Error in \'/\' Application.
Unable to serialize the se         


        

Answer 1

If SessionState mode = "SQLServer" then you have to use [Serializable()] public partial class Gebruiker .

otherwise you have to change your SessionState mode to "Inproc" Example :