When working with an app in the hub, the connection to the app times out faster than configured in virtual proxy (for example, after 5 minutes), and the error message below is displayed:Connection lost. Make sure that Qlik Sense is running properly. If your session has timed out due to inactivity, refresh to continue working.
This issue occurs when accessing Qlik Sense through a reverse proxy or load balance, but does not
occur when accessing Qlik Sense on the same server (https://localhost/hub).
The user is also being active on the sheet, i.e. they are making selections etc. to interact with sheet objects.Environments:
- Qlik Sense Enterprise, All Versions
- Load balancer or Reverse Proxy in front of Qlik Sense
Network appliances may not see the websocket connection as an "alive" TCP connection, depending on the vendor, and therefore terminate the connection on behalf of the end-user.
Qlik Sense should not terminate a session earlier than configured in the Virtual Proxy (default is 30 minutes), and when it does the error message would be different: Your session has timed out. Log back in to Qlik Sense to continue.
In this case, if the connection is being lost and it is occurring sooner than configured in the virtual proxy then this indicates that either:
- The client is terminating the websocket connection prematurely, or
- A network appliance acting on behalf of the client (load-balancer or reverse proxy) is terminating the websocket connection prematurely
Please bear in mind that network-related issues such as this are not within the scope of Technical Support. If you need further assistance, please reach out to your Account Owner to arrange Consulting Services (or see How to Contact the Consulting Team?