Problem loading ASP.NET report in iFrame with Internet Explorer

I have seen multiple posts and websites regarding this issue, yet none of the solutions / workaroun开发者_开发知识库ds posted have worked for me. I am trying to load an ASP.NET report into an iFrame. The iFrame will load correctly (across all browsers), but when I run the report, Internet Explorer only will show the following error:

ASP.NET session has expired

I have tried to use an HTML form to POST and target the iframe, as the workaround suggests here: http://connect.microsoft.com/VisualStudio/feedback/details/561066/reportviewer-2010-iframe-internet-explorer

I have also tried adding the following to the web.config file of the report application:

<sessionState  
       mode="InProc"
       stateConnectionString="tcpip=127.0.0.1:42424"
       sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes"
       cookieless="false"  
       timeout="20"  
/> 

I have also tried to set my server to use InProc mode, and that still does nothing. Can anyone offer any other potential solutions that they may know about?

Thanks!

---

Ah, I got it.

The "cookieless" parameter must be set to "true":

<sessionState  
       mode="InProc"
       stateConnectionString="tcpip=127.0.0.1:42424"
       sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes"
       cookieless="true"  
       timeout="120"  
   />