ASP.NET session has expired or could not be found -> Because the Session.SessionID changes (Reporting Services)

Question

1.-I\'m using reporting services and sometimes I get this error ASP.NET session has expired or could not be found when I try to load a report.

2.-I real

Answer 1

Try removing SessionState="somevalue" tag from the top of your calling ASPX page. I'm using a custom SessionState and refuse to use InProc since I have multiple instances on Azure. You can even use AsyncRendering=True if you desire. Let me know if this did the trick for you.