Active Directory Effective Access

"Active Directory Effective Access is the actual resulting access that a user is effectively allowed on an Active Directory object, based on an accurate consideration of the collective impact of all the security permissions specified in the access control list (ACL) of an Active Directory object."

What is Active Directory Effective Access?

Active Directory is an enterprise directory and identity service and a foundational technology at organizations worldwide.

At and in these organizations, all primary identities (domain user accounts), hosts (domain-joined computers), security groups, and the most powerful privileged accounts and groups, are stored, managed and secured in Active Directory

Each one of these accounts and groups, and in fact everything in Active Directory, is represented as an object in Active Directory, and is secured by an access control list (ACL) that specifies who has what security permissions on the object.

There exist many security permissions in the ACL of each Active Directory object, and each permission allows or denies, explicitly or via inheritance, generic or specific access to a specific user, computer or security group.

The access allowed in one permission to a specific account or group could simultaneously also be denied to the same account or group in another permission, either directly or via group memberships, explicitly or via inheritance.

Consequently, what ultimately determines the acutal access a user has on an Active Directory object are the resulting set of permissions the user is actually granted (i.e. effectively allowed) on the object, in light of accurately considering the collective impact of all the security permissions specified in the ACL of that Active Directory object.

This actual resulting set of permissions on an Active Directory object are called Active Directory Effective Permissions.

One fine day, a few years ago, for no apparent rhyme or reason, Microsoft Corporation decided to change the name of the Tab for Effective Permissions in all of its native Active Directory management tooling (e.g. ADUC) to Effective Access, and on that day, the term Active Directory Effective Access was introduced.

In reality, Active Directory Effective Access and Active Directory Effective Permissions are one and the same exact thing.

To reiterate, in reality, Active Directory Effective Access and Active Directory Effective Permissions are one and the same thing.

Technically, conceptually and practically speaking, there is absolutely no difference between them; none whatsoever.

What actually matters and controls everything in Active Directory are Active Directory Effective Permissions.

Learn more about Active Directory Effective Permissions.