(HTML5Gateway) The connection was ended because of a network error.

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Symptoms

When you try to open a published application or remote desktop you are receiving the following message:

"The connection was ended because of a network error. Please try to connecting to a remote computer again. (0x87650000) "

Cause

 WebSocket header is blocked by hardware/software router or firewall. If you open a debug console in your browser (e.g. Firefox, Chrome), you will see the particular error message '404' regarding WebSockets.

You can easily check by yourself as on the screenshot below (open a published application or remote desktop> Press F12> Network tab> WS> RDP)

Resolution

To solve the issue you need to check filtering rules of your router/firewall. When Websocket is not blocked, you will see code '101' and 'Response Headers' will contain a hash. See the screenshot below:

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