This post will cover the process of migrating computers from the source domain to the target domain. After you migrate a batch of local user profiles, migrate the corresponding batch of user workstations.
ADMT Supported Operating Systems for Computer Migration
ADMT 3.2 – supports the migration of computers that run Windows XP, Windows Vista, Windows 7, Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012 and Windows Server 2012 R2.
ADMT 3.1 – supports the migration of computers that run Windows 2000 Professional, Windows XP, Windows Vista, Windows 2000 Server, Windows Server 2003, and Windows Server 2008
ADMT 3.0 – supports the migration of computers that run Windows 2000 Professional, Windows XP, Windows NT 4, Windows 2000 Server, and Windows Server 2003.
From the ADMT machine, run ADMT and select Computer Migration Wizard.
Select the source and target domain, you can also select which specific domain controller to use.
Select computers from the domain or use an include file. This may be quite useful if you’re doing an OU at a time as you can export objects of an OU via ADUC (right click -> export list).
Select the target OU.
Choose the objects you wish to translate.
Here you can choose to replace, add or remove the permissions. Add is the safest option and is what I would recommend in most cases.
After the wizard has completed, wait x minutes before restarting the computer. This can typically be set to 0 minutes.
You can exclude particular attributes of the computer here, if needed.
Select Do not migration source object if a conflict is detected in the target domain.
At this stage the computer object will be pre-staged in the target domain, you will be able to refresh the target OU and view the object.
As usual, run the pre-check, then run pre-check and agent operation. Once the Agent operation is complete, the wizard will wait to carry out the post-check. The post check uses a A record in the target domain to contact the machine and remove the ADMT tools. You should see an A record being created on machine reboot.
If you don’t, the post-check will fail- this isn’t a major issue. As long as you’re aware of why it failed. If the A record has not been created you will need to investigate why.
You’ll probably get a message in the logs stating:
Admt unable to retrieve the dns hostname adsi property cannot be found in the property cache hr=0x8000500d
ADMT Series – 1. Preparing Active Directory
ADMT Series – 2. Preparing the ADMT Machine
ADMT Series – 3. SID History
ADMT Series – 4. Password Export Server
ADMT Series – 5. Machine Preparation
ADMT Series – 6. Service Account Migration Wizard
ADMT Series – 7. Group Account Migration Wizard
ADMT Series – 8. User Account Migration Wizard
ADMT Series – 9. Merging Users with a Different sAMAccountName
ADMT Series – 10. Security Translation Wizard – Local Profiles
ADMT Series – 11. Computer Migration Wizard