An administrator has set up a GPO to disable USB drive access on a company's servers. The GPO is set up as a computer configuration policy and does not use security groups filtering. The administrator

A WMI filter determines if the entire GPO applies based on WMI queries; if it were misconfigured, it would likely prevent the GPO from applying to any server or to both OUs uniformly, not selectively fail for one OU while succeeding for another without specific targeting.

Item-level targeting allows specific settings within a Group Policy Preference (GPP) to apply only to users or computers that meet certain criteria, such as being in a particular OU, having a specific IP address range, or OS version. If USB access control was configured via GPP with item-level targeting incorrectly applied to exclude the Sales OU, it would explain why it works for Accounting but not Sales despite the GPO linking.

The scope of a GPO refers to where it is linked in Active Directory; if the scope was not configured properly, the GPO would either not apply to either OU or would not be linked to the Sales OU, contradicting the premise that the GPO is set up and tested.

Loopback processing is a Group Policy setting that changes how user policies are applied to users logging onto specific computers; since this is a computer configuration policy to disable USB drives, loopback processing is not relevant here.