HttpContext.Current.Session is null when routing requests
Got it. Quite stupid, actually. It worked after I removed & added the SessionStateModule like so:
<configuration> ... <system.webServer> ... <modules> <remove name="Session" /> <add name="Session" type="System.Web.SessionState.SessionStateModule"/> ... </modules> </system.webServer></configuration>Simply adding it won't work since "Session" should have already been defined in the machine.config.
Now, I wonder if that is the usual thing to do. It surely doesn't seem so since it seems so crude...
Just add attribute runAllManagedModulesForAllRequests="true" to system.webServer\modules in web.config.
This attribute is enabled by default in MVC and Dynamic Data projects.
runAllManagedModulesForAllRequests=true is actually a real bad solution. This increased the load time of my application by 200%. The better solution is to manually remove and add the session object and to avoid the run all managed modules attribute all together.