Many thanks, JP4U.
I supposed Dji think you add the parameters in the shortcut properties of TimeSync in your Liberkey : Right click on TimeSync => Shortcut properties => Advanced like this :
You have to configure the Liberkey to run when Windows starts : Liberkey tools => Configuration => advanced options => Starts Liberkey at Windows startup/logon and verify in Liberkey tools => Configuration => Autorun you have enabled autorun .
Yes, I have, and yes, LiberKey starts programs at Win start up. But even when TimeSync runs, how can I make it to synchronize automatically, I cannot find any option for it. And in TS itself there does not appear to be an option to run minimized or to set to automatically synchronize the time.
Many thanks again