Session timeout dictates how long a user is allowed to be inactive before being automatically logged out of JasperSoft
How to increase session timeout value in JasperSoft
Edit the following file on the JasperSoft server to change the session timeout value (default is 20 minutes)
<Tomcat>\webapps\jasperserver-pro\WEB-INF\web.xml
<session-config>
<session-timeout>20</session-timeout>
</session-config>
Restart the Tomcat application server to make the setting take effect