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When accessing the HUB you are getting the following error when trying to open an application in the Qlik Sense Hub
Unable to connect to the Qlik Sense engine. Possible causes: too many connections, the service is offline, or networking issues.
So, with reference to the following post, I investigated
・Maximum number of connections
・Allow WebSocket traffic between client and Qlik Sense Server
between the client and the Qlik Sense Server.
As a result of the investigation, the maximum number of connections was not a problem, but the WebSocket traffic permissions were as shown in the attachment.
Based on the results of the investigation, what should be the next steps?
Unable to connect to the Qlik Sense engine error d... - Qlik Community - 1717211
