Checklist: Performing an Intraforest Migration
Applies To: Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
Applies to: Active Directory Migration Tool 3.2 (ADMT 3.2)
Reducing the number of Active Directory domains in your forest simplifies the following tasks or reduces the time that is 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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Review Active Directory Migration Tool (ADMT) installation instructions. |
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To migrate computers that are running Windows Server 2003, Windows Vista® (without Service Pack 1 (SP1)), Windows XP, and Microsoft® Windows 2000 (by using ADMT 3.1) to a target domain, 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 Note This registry setting corresponds to the Allow cryptography algorithms compatible with Windows NT 4.0 setting in Group Policy.
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For more information about making this change using Group Policy, see Microsoft Knowledge Base article 942564 (https://support.microsoft.com/default.aspx?scid=kb;EN-US;942564). For more information about the RODC client compatibility pack, see Microsoft Knowledge Base article 944043 (https://support.microsoft.com/kb/944043). |
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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 Exception (https://go.microsoft.com/fwlink/?LinkID=119315). |
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Prepare to restructure Active Directory domains within a forest. This task has the following subtasks:
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Installing ADMT in the Target Domain Preparing to Restructure Active Directory Domains Within a Forest |
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Migrate universal and global groups using either the Group Account Migration Wizard or the admt group command-line tool. |
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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. |
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Migrate standalone managed service accounts using the Managed Service Account Migration Wizard or the admt managedserviceaccount command-line tool. Group managed service accounts cannot be migrated. |
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Migrate user accounts using either the User Account Migration Wizard or the admt user command-line tool. |
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Translate local user profiles using either the Security Translation Wizard or the admt security command-line tool. |
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Migrate workstation computers and member servers using either the Computer Migration Wizard or the admt computer command-line tool. |
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Migrate domain local groups using either the Group Account Migration Wizard or the admt group command-line tool. |
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Complete post-migration tasks. This task has the following subtasks:
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