ACIM Personal Knowledgebase

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
====== FSMO roles ======

----


In a forest, there are at least five FSMO roles that are assigned to one or more domain controllers. The five FSMO roles are:

  * Schema Master: The schema master domain controller controls all updates and modifications to the schema. To update the schema of a forest, you must have access to the schema master. There can be only one schema master in the whole forest.
  * Domain naming master: The domain naming master domain controller controls the addition or removal of domains in the forest. There can be only one domain naming master in the whole forest.
  * Infrastructure Master: The infrastructure is responsible for updating references from objects in its domain to objects in other domains. At any one time, there can be only one domain controller acting as the infrastructure master in each domain.
  * Relative ID (RID) Master: The RID master is responsible for processing RID pool requests from all domain controllers in a particular domain. At any one time, there can be only one domain controller acting as the RID master in the domain.
  * PDC Emulator: The PDC emulator is a domain controller that advertises itself as the primary domain controller (PDC) to workstations, member servers, and domain controllers that are running earlier versions of Windows. For example, if the domain contains computers that are not running Microsoft Windows XP Professional or Microsoft Windows 2000 client software, or if it contains Microsoft Windows NT backup domain controllers, the PDC emulator master acts as a Windows NT PDC. It is also the Domain Master Browser, and it handles password discrepancies. At any one time, there can be only one domain controller acting as the PDC emulator master in each domain in the forest.
  * You can transfer FSMO roles by using the Ntdsutil.exe command-line utility or by using an MMC snap-in tool. Depending on the FSMO role that you want to transfer, you can use one of the following three MMC snap-in tools:
  * Active Directory Schema snap-in
  * Active Directory Domains and Trusts snap-in
  * Active Directory Users and Computers snap-in
\\ If a computer no longer exists, the role must be seized. To seize a role, use the Ntdsutil.exe utility. 

For additional information about how to use the **Ntdsutil.exe** utility to seize FSMO roles, click the article number below to view the article in the Microsoft Knowledge Base:

[[https://support.microsoft.com/en-us/kb/255504|255504]] Using Ntdsutil.exe to Seize or Transfer the FSMO Roles to a Domain

===== Transfer the Schema Master Role =====

----


Use the Active Directory Schema Master snap-in to transfer the schema master role. Before you can use this snap-in, you must register the Schmmgmt.dll file. 


==== Register Schmmgmt.dll ====

----

  - Click **Start**, and then click **Run**.
  - Type **regsvr32 schmmgmt.dll** in the Open box, and then click **OK**.
  - Click **OK** when you receive the message that the operation succeeded.
==== Transfer the Schema Master Role ====

----


  - Click **Start**, click Run, type **mmc** in the **Open** box, and then click **OK**.
  - On the **File**, menu click **Add/Remove Snap-in**.
  - Click **Add**.
  - Click **Active Directory Schema**, click **Add**, click **Close**, and then click **OK**.
  - In the console tree, right-click **Active Directory Schema**, and then click **Change Domain Controller**.
  - Click **Specify Name**, type the name of the domain controller that will be the new role holder, and then click **OK**.
  - In the console tree, right-click **Active Directory Schema**, and then click **Operations Master**.
  - Click **Change**.
  - Click **OK** to confirm that you want to transfer the role, and then click **Close**.

===== Transfer the Domain Naming Master Role =====

----
  - Click **Start**, point to **Administrative Tools**, and then click **Active Directory Domains and Trusts**.
  - Right-click A**ctive Directory Domains and Trusts**, and then click Connect to Domain Controller.\\ **NOTE**: You must perform this step if you are not on the domain controller to which you want to transfer the role. You do not have to perform this step if you are already connected to the domain controller whose role you want to transfer.
  - Do one of the following:
     - In the **Enter the name of another domain controller** box, type the name of the domain controller that will be the new role holder, and then click **OK**.\\ -or-
     - In the **Or, select an available domain controller list**, click the domain controller that will be the new role holder, and then click **OK**.
  - In the console tree, right-click** Active Directory Domains and Trusts**, and then click **Operations Master**.
  - Click **Change**.
  - Click **OK** to confirm that you want to transfer the role, and then click **Close**.


===== Transfer the RID Master, PDC Emulator, and Infrastructure Master Roles =====

----

  - Click **Start**, point to **Administrative Tools**, and then click **Active Directory Users and Computers**.
  - Right-click **Active Directory Users and Computers**, and then click **Connect to Domain Controller**.\\ NOTE: You must perform this step if you are not on the domain controller to which you want to transfer the role. You do not have to perform this step if you are already connected to the domain controller whose role you want to transfer.
  - Do one of the following:
    - In the **Enter the name of another domain controller** box, type the name of the domain controller that will be the new role holder, and then click **OK**.\\ -or-
    - In the **Or, select an available domain controller** list, click the domain controller that will be the new role holder, and then click **OK**.
  - In the console tree, right-click **Active Directory Users and Computers**, point to **All Tasks**, and then click **Operations Master**.
  - Click the appropriate tab for the role that you want to transfer (**RID**, **PDC**, or **Infrastructure**), and then click **Change**.
  - Click **OK** to confirm that you want to transfer the role, and then click **Close**.
ACIM Personal Knowledgebase

User Tools

Site Tools

Page Tools
