I have installed latest version of qlik sense server in my windows server 2012 R2 system. I can able to access the hub in locally and some public network. But when i access the hub in some network it's showing below error.
"Connection lost. Make sure that Qlik Sense is running properly. If your session has timed out due to inactivity..."
Kumar you must check with you network team if there's any other device in the middle that might be the cause, maybe you might have the ports open within windows, the network component is blocking it. I would use wireshark to see whats your network touching.
Giuseppe Novello Principal Technical Support Engineer @ Qlik