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How to troubleshoot web socket issue for Qlik Sense

General

As of version “Qlik Sense Enterprise on Windows November 2024”, a major security vulnerability has been closed.
New settings have therefore been added to the proxy service to prevent “Cross-site WebSocket hijacking”.

To get the communication between AG and Qlik Sense running again, the following must be set up:
Open the file “Proxy.exe.config” which is located under “C:\Program Files\Qlik\Sense\Proxy”
If the value of the “WebSocketCSWSHCheckEnabled” key is set to “true” the following solutions are available:

Solution 1

  • AG Reporting version 6.5.1 or higher must be installed.

Solution 2

  • Setting the following key to “false” for a short time is only a short-term solution from a security point of view.
    <add key="WebSocketCSWSHCheckEnabled" value="false"/>
  • Restart the Qlik Proxy service.

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