[Samba] GPO Security Filtering "Access Denied"

[Miguel medalha]

>> FYI I just found where to add a particular permission. 
>> I tried to add "Read" (not apply) to "Authenticated Users", 
>> and got a "Unable to save permission changes on {3729C4F3-A62A-4805-AB02-728CE538BA23}.
>> Access is denied"

>> So I can't even add that permission.

This means that you have another problem somewhere (sysvol permissions?). I can add those permissions alright.