Hub Error: Connection to Qlik Sense engine failed for unspecified reasons

[FelipeRios23]

While reload data on Qlik Sense Enterprise on Windows  before of 45 min pop the message Hub Error: Connection to Qlik Sense engine failed for unspecified reasons".

i maked this:

- Verify the White list on Virtual proxy

- Check Extended Security Environment

- Make the Websocket Connectivity Tester

- Setup WebSocketPingInterval on C:\Program Files\Qlik\Sense\Proxy\Proxy.exe.config

- Search with http://localhost/hub (not have SSL certificate)

can me please, share your recomendations. Grateful!

[Anil_Babu_Samineni]

@FelipeRios23 Make sure you have Load balancing correctly designed and check if that service is part of Engine.

Best approach for this checking via server URL and not FQDN.