Event 1058 - Error code 5 - Access denied

Good evening,

Due to another issue on our domain (for which I now have a ticket) I tried to reset the permissions on the domain controllers to their default perms using: dsacls "DC=instream,dc=local" /S /T

But it seems to be failing, and since when I do a gpupdate on systems I get an Event 1058 with an Access denied error code.

Would anyone know the proper way to reset the permissions on a forest so that the gpupdate works again?

Thanks