So, it is a bad idea ! I will be very disappointed ! However, is there any way to share a Windows application between a few remote users, even only one at a time ? I was thinking to use a website as common base : is there any host system based on Windows that could better support that "bad idea" ? (natively equiped with X11) VPN can be a solution, but in that case my own PC become the server and shall shall remain ON 24/24h Thanks for your advices to rein the right path !