Windows 10: How can I block task manager in mircosoft family?

My son is using the task manager exploit to get around family and play his games and and blocked programs how can I block task manager?

:)

 

UAC prompt for Task Manager. MMC blocked. What happened?

It's possible that Computer Management is being blocked by SmartScreen. We suggest disabling it and see if it helps. Follow the steps below:

1. Click the Start button.
2. Type smartscreen in the search bar.
3. Click Change SmartScreen settings.
4. Click the drop-down arrow in the Security row.
5. Click Change settings beneath the WindowsSmartScreen row.
6. Click Don't do anything (turn off Windows SmartScreen).
7. Click OK.

 

No restart button in task manager

another easy way to kill tasks, download and install Winaero Tweaker(free) and theres a setting to add a Kill non responding tasks using the desktop right click menu. When you place your cursor on the desktop anywhere and right click the option is at the top of the list, Very handy and you dont have to go through all those steps and well Winaero Tweaker has alot of cool Windows tweaks. Just posting a different suggestion, Im sure your ok with what was suggested here.