System.Web.HttpException (0x80004005): 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 \\ section in the application configuration. at System.Web.UI.Page.get_Session() at News.NewsTOCNavigation.NewsTOCNavigationUserControl.Page_Load(Object sender, EventArgs e)