I have configured \'SessionAuthenticationModule\' based on the instructions from http://www.wiktorzychla.com/2014/11/forms-authentication-revisited-for-net.html. My application
You seem to lack the SAM in web.config.
web.config
Take a look at my old tutorial that aims at .NET 3.5
http://www.wiktorzychla.com/2011/08/quest-for-customizing-adfs-sign-ing-web.html