Can you please try to restart the “avast! Management Server” service? (Control Panel → Administrative Tools → Services).
Does that make any difference?
But when i click on “Client side task” when i click on task. I get a popup with AsaAdmin with text “Argument non valide a été detecté” (Argument not valid was dectected ) ?
I need to restart Avast Management Server to reuse ADNM but i can’t click on task with error ?