Check for Constrained Language Mode

Property

Links

$ExecutionContext.SessionState.LanguageMode

Get-AppLockerPolicy -Effective | select -ExpandProperty RuleCollections

Disable Constrained Language mode as local admin

Set-ItemProperty 'hklm:\SYSTEM\CurrentControlSet\Control\Session Manager\Environment' -name '__PSLockdownPolicy' -Value 8

or

setx __PSLockdownPolicy "8" /M

or Use PowerShdll.dll to bypass

rundll32 .\PowerShdll.dll,main -i