I can't contact the Licence Portail from my CORE throught a Web Proxy installed in my infrastructure.
How may configure the licence contact from the core throught a Web Proxy ?
I founded this article and now it's ok.
If you need the QorePortal upload to work through the proxy also, you will need to install a patch on your core - https://support.quest.com/download-install-detail/6092636. If you do not upload data to the QorePortal for remote management, then you can disregard.