Reducing the number of Active Directory domains in your forest simplifies the following tasks or reduces the time required to complete them:
- Managing administration requirements for your
organization
- Handling replication traffic
- Administering users and groups
- Implementing Group Policy
If you frequently reassign users to different domains, you might also migrate objects between domains on a regular basis. Restructuring Active Directory domains within a forest differs from migration between forests, and it requires careful planning and testing.
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This checklist summarizes the migration process and the tasks that you can use Active Directory Migration Tool (ADMT) to perform to complete your migration project. For detailed information about this process, see the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Review ADMT preinstallation instructions. |
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To migrate computers running Windows 2000, Windows XP, and Windows Server 2003 to a target domain with domain controllers running Windows Server 2008 or Windows Server 2008 R2, first set the following registry key on the target domain controllers: Registry path: HKLM\System\CurrentControlSet\Services\Netlogon\Parameters Registry value: AllowNT4Crypto Type: REG_DWORD Data: 1
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For more information about making this change using Group Policy, see Known Issues for Installing and Removing AD DS (http://go.microsoft.com/fwlink/?LinkId=119321). |
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For any migration tasks that use agent deployment and where Windows Firewall is in use, enable the File and Printer Sharing exception. This can include migration for the following situations:
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For more information, see Enable or Disable the File and Printer Sharing Firewall Rule (http://go.microsoft.com/fwlink/?LinkID=119315). |
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Prepare to restructure Active Directory domains within a forest. This process has the following subtasks:
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See "Preparing to Restructure Active Directory Domains Within a Forest" in the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Migrate universal and global groups using either the Group Account Migration Wizard or the admt group command-line tool. |
Group Account Migration Wizard; admt group See "Migrate Groups" in the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Migrate service accounts using either the Service Account Migration Wizard or ADMT command-line tools, such as admt service to identify service accounts in the source domain and admt user to migrate service accounts that you specify. |
Service Account Migration Wizard; admt service; admt user See "Migrate Service Accounts" in the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Migrate user accounts using either the User Account Migration Wizard or the admt user command-line tool. |
User Account Migration Wizard; admt user See "Migrate User Accounts" in the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Translate local user profiles using either the Security Translation Wizard or the admt security command-line tool. |
Security Translation Wizard; admt security See "Translate Local User Profiles" in the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Migrate workstation computers and member servers using either the Computer Migration Wizard or the admt computer command-line tool. |
Computer Migration Wizard; admt computer See "Migrate Workstations and Member Servers" in the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Migrate domain local groups using either the Group Account Migration Wizard or the admt group command-line tool. |
Group Account Migration Wizard; admt group See "Migrate Domain Local Groups" in the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678). |
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Complete post-migration tasks. This step has the following subtasks:
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In the ADMT Migration Guide (http://go.microsoft.com/fwlink/?LinkId=93678), see the following topics:
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