Examine Migration Logs for Errors

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)

The Active Directory Migration Tool (ADMT) keeps a detailed log of every action that you perform when you migrate resources between Active Directory domains. Errors that occur during the migration process are noted in the migration log, although they might not produce a warning message in ADMT. Examining the migration log after a migration is a good way to verify that all the tasks were completed successfully. Because it is important to complete the steps of the migration in a specific order, it is best to check the migration log after each step, so that you can discover any failures in time to fix them.


Log files are created in the Windows\ADMT\Logs folder on the computer where ADMT is installed.

Accessing ADMT log files

ADMT logs each migration task and stores the logs in the ADMT database. The logs for the last 20 migration tasks are stored on the local computer. You can view log information that is stored in the ADMT database from the ADMT snap-in, or you can use the admt task command to retrieve and store that information in a specified location.

When you perform interforest migrations, you can choose to log the attributes for each user, group, and computer object that is migrated. This is called verbose logging, and you do it with the admt config logging command.

For more information and examples of commands related to accessing ADMT log files, search for "admt config logging" or "admt task" in the ADMT Help.