He has Windows 10... it's a question of how to disable the notification.
Press Windows + R (Run Command)
Type "regedit" and press enter
Navigate to
Code:
HKey_Local_Machine\SOFTWARE\Microsoft\WindowsUpdate\UX\Settings\
If there is a "HideMCTLink" keyword, change the value to 1
If not, right click > New DWORD > Name it "HideMCTLink" > Set Value to 1
Reboot.
Easy as flipping off a light switch