User991499041 posted
Hi KALYANA,
When using ReportViewer in SSRS we are getting the below error,this happens when result set is huge.
Microsoft Reporting WebForms AspNetSessionExpiredException ASP NET session has expired or could not be found
Here is a Property from Web.Config pertaining to SessionState.
<sessionState mode="InProc" cookieless="false" timeout="70" />
You are storing your session InProc. Try changing it to session
StateServer.
The ASP.Net ReportViewer relies on ASP.Net session state to store critical data that can’t always be easily regenerated.
Session-State Modes
https://msdn.microsoft.com/en-us/library/ms178586.aspx
In addition, increase timeout in web.config, set the property value to report view, set the
KeepSessionAlive to true.
Regards,
zxj