I'm looking for a free, VNC-like application that will allow me to remote control a kiosk PC, and most importantly, allow me to blank the screen of the remote PC when required (e.g. making config changes, applying updates, etc.) The remote kiosk PC is running Windows 10 in a commercial environment.
I've been using UltraVNC but, following changes to Windows 8 (and newer), I can no longer use it to stop users seeing the screen of the remote kiosk PC. Consequently, kiosk users are able to still use the touch screen and interfere with the changes that I'm making onscreen.
EDIT: I don't want to log the current user out because I don't always want to prevent access to the kiosk software.