Error generating and downloading lager date in Sage X3

Hello All,

I'm experiencing the below error message whenever I'm trying to download large data from Sage X3, mostly Financial Entry inquiry. Your advise will be appreciated.

Sage X3 version: V11

Patch: 16

SQL Server: 2014 

Error Message:  The web server has experienced the following error when processing the last query sent, the session is going to be cancelled : Convergence session not found on this server (b13fc82b-1bfb-4f00-a564-d4e8774d6237). 

This can due to an unscheduled server restart.