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Event ID 21 — Operations Master Roles Assignment

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Active Directory Domain Services (AD DS) defines five Operations Master Roles (also known as flexible single master operations or FSMO) that are used to perform specialized tasks. The following operations master roles are defined in AD DS:

  • Schema master
  • Domain naming master
  • RID master
  • PDC master
  • Infrastructure master

The PDC master and Domain naming master roles must be assigned to the Management Server to comply with the licensing terms for Windows EBS. If these roles are not assigned, the Management Server automatically shuts down 28 days after the condition is first detected, unless corrective action is taken.

Event Details

Product: Windows Operating System
ID: 21
Source: Microsoft-Windows-Server Infrastructure Licensing
Version: 6.0
Symbolic Name: LIC_ENFORCEMENT_FSMOCHECK_FAILED
Message: The FSMO Role Check detected a condition in your environment that is out of compliance with the licensing policy. The Management Server must hold the primary domain controller and domain naming master Active Directory roles. Please move the Active Directory roles to the Management Server now.

Resolve

Assign roles to the Management Server

For information about moving roles in Windows EBS, see "Move Active Directory Roles" at the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkId=136747).

Verify

To determine the RID, PDC, and Infrastructure operations master role holder of a selected domain

  1. Click Start, click Run, type dsa.msc, and then click OK.
  2. Right-click the selected Domain Object in the console tree, and then click Operations Masters.
  3. Click the PDC tab to view the server holding the PDC master role.
  4. Click the Infrastructure tab to view the server holding the Infrastructure master role.
  5. Click the RID Pool tab to view the server holding the RID master role.

To determine the schema master role holder in a forest

  1. Click Start, click Run, type mmc, and then click OK.
  2. On the File menu, click Add/Remove Snap-in, click Active Directory Schema, click Add, and then click OK.
  3. Right-click Active Directory Schema in the details pane, and then click Operations Masters to view the server holding the schema master role.

NOTE: For the Active Directory Schema snap-in to be available, you may have to register the Schmmgmt.dll file. To do this, click Start, click Run, type regsvr32 schmmgmt.dll in the Open box, and then click OK. A message is displayed that states the registration was successful.

To determine the Domain Naming master role holder in a forest

  1. Click Start, click Run, type mmc, and then click OK.
  2. On the File menu, click Add/Remove Snap-in, click Active Directory Domains and Trusts, click Add, and then click OK.
  3. In the details pane, right-click Active Directory Domains and Trust, and then click Operations Master to view the server holding the domain naming master role in the forest.

Operations Master Roles Assignment

Windows EBS