ARD on macOS Cheat Sheet

macOS_ARD_cheat_sheet.txt

If you are connecting via VNC / ARD client to a macOS system with mutliple GUI sessions.

If the screen saver is enabled on the account and it locks the screen, any subsequent connections will be in 
a stuck state, you will not be able to type or even access the screen saver password dialog box. It is like the system 
will not recognise any movement. 

Provided you have SSH accesss to an admin account on the system and you have no unsaved changes, 
you will be able to force logout the GUI enviroment using the command below : 

   $ sudo launchctl bootout gui/$(id -u <usercode>)

Reconnect with ARD / VNC and you should now spawn a new session.

If you want to remove background sessions this command below is also useful : 

   $ sudo launchctl bootout user/$(id -u <username>)