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Windows Server 2012 : Deploying domain controllers using Server Manager (part 6) - Uninstalling AD DS

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1/10/2014 1:02:01 AM

2.5 Uninstalling AD DS

If you need to retire a Windows Server 2012 domain controller from your environment—for example, to repurpose its server hardware for some other role—you can do this using Server Manager by performing the following steps:

  1. Launch the Remove Roles And Features Wizard from the Manage menu, and select your server from the server pool.

  2. On the Remove Server Roles page, deselect the Active Directory Domain Services check box. The Validation Results page is displayed at this point to indicate that you must first demote the domain controller before you can remove the AD DS role. (See Figure 9.)

    You must demote a domain controller before you can remove the AD DS role from it.
    Figure 9. You must demote a domain controller before you can remove the AD DS role from it.
  3. On the Validation Results page, click Demote This Domain Controller to launch the AD DS Configuration Wizard.

  4. On the Credentials page of this wizard, supply the necessary credentials to perform this operation if your current logon credentials have insufficient privileges. If previous attempts to remove AD DS from this domain controller failed, select the Force The Removal Of This Domain Controller check box on this page.

  5. If you are demoting the last domain controller in the domain, make sure the Last Domain Controller In The Domain check box is selected to confirm that you want to remove the domain from your forest. Note that this check box is displayed only if the server is the last domain controller in the domain.

  6. On the Warnings page, make sure the Proceed With Removal check box is selected to confirm your decision to perform the demotion. Note that this page is not displayed if you chose to force the removal of AD DS in the previous step.

  7. On the Removal Options page, you have the option to remove any DNS delegations created in the authoritative parent zone. Note that you need to supply appropriate credentials to perform this action.

  8. If you are demoting the last domain controller in the domain, you also have the options of removing the DNS zone for the domain and also any application partitions. (See Figure 10.) By clicking View Partitions, you can display a list of any application partitions in AD DS.

    Options for removing the DNS zone and application partitions when demoting the last domain controller in a domain.
    Figure 10. Options for removing the DNS zone and application partitions when demoting the last domain controller in a domain.
  9. On the New Administrator Password page, enter a password for the local Administrator account for the server.

  10. Complete the wizard to demote the domain controller. The server restarts, and you can log on using the local Administrator account and the new password you specified in the previous step.

  11. Launch the Add Roles And Features Wizard again from the Manage menu, and select your server from the server pool.

  12. On the Remove Server Roles page, deselect the Active Directory Domain Services and DNS Server check boxes. Finish running the wizard. When the server restarts, both the AD DS and DNS Server roles will have been removed.

Important

Removing application partitions

When you demote the last domain controller in a domain using Server Manager, you have the option of removing any application partitions. At a minimum, when you do this you should see the default DNS application partitions—for example:

  • DC=DomainDNSZones,DC=corp,DC=contoso,DC=com

  • DC=ForestDNSZones,DC=corp,DC=contoso,DC=com

If you have other server applications deployed in your environment, you might see additional application partitions. Before removing these partitions, make sure that your deployed server applications will still be able to work properly, unless you are also retiring those server applications from your environment.

 
Others
 
- Windows Server 2012 : Deploying domain controllers using Server Manager (part 5) - Verifying the installation
- Windows Server 2012 : Deploying domain controllers using Server Manager (part 4) - First Windows Server 2012 domain controller in an existing forest
- Windows Server 2012 : Deploying domain controllers using Server Manager (part 3) - Additional domain controller in new domain
- Windows Server 2012 : Deploying domain controllers using Server Manager (part 2) - First domain controller in new forest
- Windows Server 2012 : Deploying domain controllers using Server Manager (part 1) - Preparing for domain-controller deployment, Installing the AD DS role
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