Somebody knows what to do with a WebSocket connection failure?

[maartenv]

I'm getting following error when trying to load the hub.

In the chrome console I see the following

The server is hosted outside the corporate network.

Outside the corporate network we don't get the error.

We use a forcepoint (websense) proxy to protect our internet traffic.

Also QlikSense cloud works without issues.

Thanks for any advice

[Giuseppe_Novello]

I would go back to forcepoint and have a written confirmation that they do support websockets connectivity.  When you mean "Outside the corporate network we don't get the error." I think you mean "inside" instead, so if it is inside, then do you user "forcepoint", if not, then that leans to a middle technology is interfering the websocket connectivity.