I was not able to understand your comment from your above post.
Adding a manual exclusion for the Sense site in the Advanced settings under the Proxy settings (in the IE, Settings, Connection options) solved the issue.
I have a client who is getting this "Connection lost" message very frequently. And this is not happening to any one else besides this client. And this error is popping up in and around 3-7mins. I have updated my time out settings to 2hrs, but still no use.
Below is the error message i see in the proxy log.
Backend web socket connection Closed for session '28323627-cdf1-457f-8bfe-298fcb2494bd'. App id: '6480f687-b705-495f-a209-72514fd308db. UserAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/600.6.3 (KHTML, like Gecko) Version/8.0.6 Safari/600.6.3'
And client is on MAC and using Firefox. I tried simulating the same with my MAC but didn't see connection lost.
It sounds like a different issue to what I had. This was on a Windows machine with a web proxy (which I believe caused Sense not to recognise the client as authenticated) and the user could not get on at all - it was not a case of them being able to work for a while and then being disconnected.
It seems strange that the issue only happens to one user.
Thanks Steve for the Reply. Yeah that is wired. I am thinking this is something to do with their network or corporate security policy. Do you know if we have to allow/open certain ports on their end as well?
For your info, we were also using Windows Authentication.
Further we found out, that the problem occured on one Windows client machine using Firefox v38. When using Chrome on the same Windows machine, the problem was not present. I got told that the problem was not observed with Firefox v39 on the same windows machine.
Conclusion: It looks like our problem was related to Firefox v38 on Windows 8.
Did anyone ever find a solution to this? I'm having a similar issue with one of my users. They are on a Mac using Chrome. They receive the "app has closed" error after a few minutes (typically 2 - 5). No other users have this problem. I have not been able to duplicate it on my Mac also using Chrome. Any ideas on how to fix this??
We figured out our problem. We are running Avast anti-virus on our Macs. Not sure why, but Avast seems to be causing Qlik Sense to lose it's connection after about 2-3 minutes. Once I added our Qlik Sense URL to the exclusions list in Web Shield, it stayed connected. We run Avast on our PC's too, so not sure why we don't have this same issue.