Disable context menus in the Start Menu
Supported on: At least Windows Server 2016, Windows 10 Version 1803
Registry
HKLM
Software\Policies\Microsoft\Windows\Explorer HKCU
Software\Policies\Microsoft\Windows\Explorer Value name: DisableContextMenusInStart
Description
This policy allows you to prevent users from being able to open context menus in the Start Menu. If you enable this policy, then invocations of context menus within the Start Menu will be ignored.