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Install Active Directory Domain Services on the Member Server That Runs Windows Server 2008 or Windows Server 2008 R2

Updated: November 19, 2009

Applies To: Windows Server 2008, Windows Server 2008 R2

Install Active Directory Domain Services (AD DS) on a member server that runs Windows Server 2008 or Windows Server 2008 R2 by using the Active Directory Domain Services Installation Wizard (Dcpromo.exe). The member server should be located in the forest root domain. After you install AD DS successfully, the member server will become a domain controller. You can install AD DS on any member server that meets the domain controller hardware requirements.

You can install AD DS using the Windows user interface (UI). The Windows UI provides two wizards that guide you through the installation process for AD DS. One wizard is the Add Roles Wizard, which you can access in Server Manager. The other wizard is the Active Directory Domain Services Installation Wizard (Dcpromo.exe), which you can access in either of the following ways:

  • When you complete the steps in the Add Roles Wizard, click the link to start the Active Directory Domain Services Installation Wizard.

  • Click Start, click Run, type dcpromo.exe, and then click OK.

Membership in the local Administrator account, or equivalent, is the minimum required to complete this procedure. Review details about using the appropriate accounts and group memberships at Local and Domain Default Groups (http://go.microsoft.com/fwlink/?LinkId=83477).

Depending on the operating system installation options that you selected for the computer, the local Administrator password might be blank or it might not be required. In this case, run the following command at a command prompt before you start to install AD DS:

net user Administrator password /passwordreq:yes

Replace password with a strong password.

  1. Click Start, and then click Server Manager.

  2. In Roles Summary, click Add Roles.

  3. If necessary, review the information on the Before You Begin page, and then click Next.

  4. On the Select Server Roles page, select the Active Directory Domain Services check box, and then click Next.

  5. If necessary, review the information on the Active Directory Domain Services page, and then click Next.

  6. On the Confirm Installation Selections page, click Install.

  7. On the Installation Results page, click Close this wizard and launch the Active Directory Domain Services Installation Wizard (dcpromo.exe).

  8. On the Welcome to the Active Directory Domain Services Installation Wizard page, click Next.

    If you want to install from media, identify the source domain controller for AD DS replication, or specify the Password Replication Policy (PRP) for an RODC as part of the installation of the additional domain controller, click Use advanced mode installation.

  9. On the Operating System Compatibility page, review the warning about the default security settings for Windows Server 2008 domain controllers, and then click Next.

  10. On the Choose a Deployment Configuration page, click Existing forest, click Add a domain controller to an existing domain, and then click Next.

  11. On the Network Credentials page, type the name of any existing domain in the forest where you plan to install the additional domain controller. Under Specify the account credentials to use to perform the installation, click My current logged on credentials or click Alternate credentials, and then click Set. In the Windows Security dialog box, provide the user name and password for an account that can install the additional domain controller. To install an additional domain controller, you must be a member of the Enterprise Admins group or the Domain Admins group. When you are finished providing credentials, click Next.

  12. On the Select a Domain page, select the domain of the new domain controller, and then click Next.

  13. On the Select a Site page, select a site from the list or select the option to install the domain controller in the site that corresponds to its IP address, and then click Next.

  14. On the Additional Domain Controller Options page, make the following selections, and then click Next:

    • DNS server: This option is selected by default so that your domain controller can function as a DNS server. If you do not want the domain controller to be a DNS server, clear this option.

      noteNote
      If you select the option to install DNS server, you might receive a message that indicates that a DNS delegation for the DNS server could not be created and that you should manually create a DNS delegation to the DNS server to ensure reliable name resolution. If you are installing an additional domain controller in either the forest root domain or a tree root domain, you do not have to create the DNS delegation. In this case, click Yes and disregard the message.

    • Global Catalog: This option is selected by default. It adds the global catalog, read-only directory partitions to the domain controller, and it enables global catalog search functionality.

    • Read-only domain controller. This option is not selected by default. It makes the additional domain controller read only.

  15. If you selected Use advanced mode installation on the Welcome page, the Install from Media page appears. You can provide the location of installation media to be used to create the domain controller and configure AD DS, or you can have all the replication done over the network. Note that some data will be replicated over the network even if you install from media. For information about using this method to install the domain controller, see Installing AD DS from Media.

  16. If you selected Use advanced mode installation on the Welcome page, the Source Domain Controller page appears. Click Let the wizard choose an appropriate domain controller or click Use this specific domain controller to specify a domain controller that you want to provide as a source for replication to create the new domain controller, and then click Next. If you do not choose to install from media, all data will be replicated from this source domain controller.

  17. On the Location for Database, Log Files, and SYSVOL page, type or browse to the volume and folder locations for the database file, the directory service log files, and the system volume (SYSVOL) files, and then click Next.

    Windows Server Backup backs up the directory service by volume. For backup and recovery efficiency, store these files on separate volumes that do not contain applications or other nondirectory files.

  18. On the Directory Services Restore Mode Administrator Password page, type and confirm the restore mode password, and then click Next. This password must be used to start AD DS in Directory Service Restore Mode (DSRM) for tasks that must be performed offline.

  19. On the Summary page, review your selections. Click Back to change any selections, if necessary.

    To save the settings that you have selected to an answer file that you can use to automate subsequent Active Directory operations, click Export settings. Type the name for your answer file, and then click Save.

    When you are sure that your selections are accurate, click Next to install AD DS.

  20. On the Completing the Active Directory Domain Services Installation Wizard page, click Finish.

  21. You can either select the Reboot on completion check box to have the server restart automatically or you can restart the server to complete the AD DS installation when you are prompted to do so.

For information about installing AD DS by using a command line or an answer file, see Installing an Additional Domain Controller.

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