Hi @user8302847289472,
Could you please open the spacedesk Driver Console window on your primary machine by clicking the spacedesk tray icon in the task bar’s notification area.
In the Console window, please select Diagnostics -> Incompatible Products, then check on the right side panel which product is present (with check mark) then click the uninstall button and reboot your primary machine. Then try again with spacedesk.
