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Event ID 16407 — Well-Known Group Upgrade

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Applies To: Windows Server 2008 R2

When a computer is promoted to become a domain controller, the Well-Known Group Upgrade process recreates required well-known groups and local groups that are not present when you install Active Directory Domain Services (AD DS) to make a computer a domain controller.

Event Details

Product: Windows Operating System
ID: 16407
Source: SAM
Version: 6.0
Symbolic Name: SAMMSG_WELL_KNOWN_GROUP_RECREATED
Message: The Security Account Database detected that the well known group or local group %1 does not exist. The group has been recreated.

Resolve

This is a normal condition. No further action is required.

Well-Known Group Upgrade

Active Directory