Session state can only be used when enableSessionState is set to true either in a configuration

Question

I am working on Asp.net MVC 2 app with c# by using vs 2010.I am having below mentioned error when I run my app locally under debug mode.

Error message image is as be

Answer 1

Actually jessehouwing gave the solution for normal scenario.

But in my case I have enabled 2 types of session in my web.config file

It's like below.

First one :

Second one :

So in my case I have to comment Second one.B'cos that thing for the production.When I commented out second one my problem vanished.