The SessionStateTempDataProvider requires SessionState to be enabled

Question

My hybrid (web forms/MVC) project is working fine in my local development environment BUT when I deploy (xcopy) to my Test environment I get the error that SessionState is n

Answer 1

Google Solved: I added this attribute to the modules node in the web.config and EVERYTHING magically started working:

It looks like I'm not alone:

http://forums.asp.net/p/1293974/2509190.aspx

http://www.flyvergrillen.dk/2009/03/26/being-trapped-in-iis/

I think my pure MVC project (that worked in Test environment) was too simple and may not have forced the MVC framework to require TempData and SessionState, so that's how I'll explain it away ;-)