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Update a Server with Configuration Changes

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Applies To: Windows Server 2008, Windows Server 2008 R2

On a domain controller that is running Windows Server 2008, you can use this procedure to force replication of configuration changes to a domain controller that is not receiving replication as a result of configuration errors. This procedure is particularly useful for updating a read-only domain controller (RODC) in a branch site with configuration changes from a hub site, for example, when a site link object has been inadvertently deleted.

You can complete this procedure by using either the Windows interface or the Repadmin command-line tool.

Membership in Enterprise Admins in the forest or Domain Admins in the forest root domain, 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 (https://go.microsoft.com/fwlink/?LinkId=83477).

To use the Windows interface to update a server with configuration changes

  1. Open Active Directory Sites and Services: On the Start menu, point to Administrative Tools, and then click Active Directory Sites and Services.

  2. In the console tree, expand Sites, and then expand the site of the domain controller that you want to receive configuration updates.

  3. Expand the Servers container to display the list of servers that are currently configured for that site.

  4. Double-click the server object that requires the configuration updates that you want to replicate.

  5. Right-click NTDS Settings below the server object, and then click Replicate configuration to the selected DC.

  6. In the Replicate Now message box, click OK.

To use Repadmin to update a server with configuration changes

  1. Open a Command Prompt as an administrator: On the Start menu, right-click Command Prompt, and then click Run as administrator. If the User Account Control dialog box appears, provide Enterprise Admins credentials, if required, and then click Continue.

  2. At the command prompt, type the following command, and then press ENTER:

    repadmin /showrepl <ServerName>

    Where <ServerName> is the name of the domain controller that has the configuration changes that you want to replicate. The /showrepl switch provides the globally unique identifier (GUID) information that you need for step 6.

  3. Click the Command Prompt menu in the title bar, click Edit, and then click Mark.

  4. Use the cursor to select the value in DSA object GUID.

  5. Click the Command Prompt menu in the title bar, and then click Copy. Use the Paste command on the Command Prompt menu to paste this value for the <SourceDomainControllerGUID> parameter in the next step.

  6. At the command prompt, type the following command, and then press ENTER:

    repadmin /sync <ConfigurationDistinguishedName> <DestinationServerName> <SourceDomainControllerGUID>

    Value Description

    /sync

    Synchronizes replication of the specified directory partition between the specified domain controllers

    <ConfigurationDistinguishedName>

    The configuration directory partition distinguished name: CN=Configuration,DC=ForestRootDomainName

    <DestinationServerName>

    The name of the domain controller that is to receive the configuration updates, for example, DC3B.

    <SourceDomainControllerGUID>

    The Directory System Agent (DSA) GUID of the domain controller that is forcing replication.