Customize message for Access Denied errors
Computer Configuration > Policies > Administrative Templates > System > Access-Denied Assistance > Enable
Remove ‘Restore Previous Versions’ context Menu
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Blocked\
Create a new string value {596AB062-B4D2-4215-9F74-E9109B0A8153}.
Disable Cortana
Computer Configuration > Administrative Templates > Windows Components > Search > Allow Cortana [Disable]