When adding a domain user to the local administrators group I receive an access denied, this worked before and now sadly and strangely it no longer does.
$user = "mydomain/user"
$group = [ADSI]"WinNT://./Administrators,group"
$group.Add("WinNT://$user,user")
Exception calling "Add" with "1" argument(s): "Access is denied. " At C:\test\Untitled5.ps1:3 char:1 + $group.Add("WinNT://$user,user") + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : CatchFromBaseAdapterMethodInvokeTI
Logged on as a domain administrator
Same error using the PowerShell ISE or the console
Yet, I am able to add the user through the Computer Management MMC snap-in, no problem.