Hi,
Thanks for the reply. If you refer to
Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\Resilio Sync key in the registry, it's already like that.
I'd like to correct one thing : on one Win 10 PC it does starts minimized, but on another Win10 (32bits) PC, it still open maximized even with this setting in the registry.
Sincerely