Session state enableSessionState issues in asp.net application

Question

I get the following error in the production environment

Session state can only be used when enableSessionState is set to true, either in a configuration file or in the Page directive. Please also make sure that System.Web.SessionStateModule or a custom session state module is included in the configuration\system.web\httpModules section in the application configuration.

The following things I have tried as of now

• Checked machine.config and web.config, both have enableSessionState="true"
• Added enableSessionState="true" to pages in web.config
• State module is also added in <httpmodules> section
• Even tried setting enableSessionState="true" in page directive

Note: When I try to debug the code in Dev environment, everything works fine as it should.

Can anyone help me out getting over this issue, I just can't figure out a way out of it.

Answer 1

I know this is a late response but I just want to add how I fixed the same problem.

First I want to emphasize that I'm using web forms, not MVC - this may not work for MVC.

I created a web form that contained the class ContactUser and I created my own constructor so it looked like:

public ContactUser(String to, bool isUser) { ... }

And in this I tried to access a session variable:

String user = Session["username"]

It turns out that you CANNOT use the session state in the constructor of a class, but you can use it in other functions that you write and in the protected void Page_Load(object sender, EventArgs e) procedure. So once I moved session state out of the constructor into the page load procedure everything worked :)!

Hope this helps anyone that runs into the same problem :D!

Answer 2

What does your session state config look like? You probably want to be set up to use inproc session handling.

http://msdn.microsoft.com/en-us/library/ms178586.aspx