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

I'm using report viewer 11.0.0; in your web config on system.web section, put the next configuration:

When you are generating the report (C# code bellow) in the reportviewer object change the KeepSessionAlive property to false and the AsynkRendering property to false, and that's all

        this.rvReporte.KeepSessionAlive = false;
        this.rvReporte.AsyncRendering = false;

(rvReporte) is a ReportViewer control located on my asp.net Form This solution work for me, i hope that work for other people.

Regards