Common security identifiers in the Windows server operating system

Profile

A security identifier (SID) is a variable-length unique value that identifies a security principal or a security group in a Windows Server operating system. A common SID is a set of SIDS that identify a generic user or a general group. Their values are the same in all operating systems.

This information can be used to troubleshoot security issues and can also be used to resolve potential display problems that may occur in the ACL editor. In the ACL editor, you might display a SID instead of a user or group name.

Common SID:? sid:s-1-0

Name: Null Authority

Description: identifier authority.

sid:s-1-0-0

Name: Nobody

Description: No security principal.

Sid:s-1-1

Name: World Authority

Description: identifier authority.

sid:s-1-1-0

Name: Everyone

Description: A group that includes all users (even anonymous users and guests). Membership is controlled by the operating system.

Sid:s-1-2

Name: Local authority

Description: identifier authority.

Sid:s-1-3

Name: Creator Authority

Description: identifier authority.

sid:s-1-3-0

Name: Creator Owner

Description: An inheritable access control entry (ACE) placeholder. When an ACE is inherited, the system replaces the SID with the SID of the creator of the object.

Sid:s-1-3-1

Name: Creator Group

Description: The placeholder in the ACE can be inherited. When an ACE is inherited, the system replaces the SID with the primary group SID of the object creator. The primary group is intended for use by the POSIX subsystem only.

Sid:s-1-3-2

Name: Creator Owner Server

Description: This SID is not used in Windows 2000.

Sid:s-1-3-3

Name: Creator Group Server

Description: This SID is not used in Windows 2000.

Sid:s-1-4

Name: Non-unique Authority

Description: identifier authority.

Sid:s-1-5

Name: NT Authority

Description: identifier authority.

Sid:s-1-5-1

Name: Dialup

Description: A group that includes all users who are logged on through a dial-up connection. Membership is controlled by the operating system.