How to migrate SID values from A to B domain

To migrate the Security Identifier (SID) values from one domain (A) to another domain (B), you can use the Microsoft SID History feature, which allows you to preserve user and group SIDs after migrating from one domain to another.

 

Here are the basic steps for migrating SIDs from domain A to domain B:

 

1.Install the Active Directory Migration Tool (ADMT): You'll need to download and install the ADMT on a server in domain B.

 

2.Prepare the domains: Ensure that both domains are configured for trust and that you have the necessary permissions to perform the migration.

 

3.Migrate the users: Use the ADMT to migrate the users from domain A to domain B. This will create new accounts in domain B with new SIDs.

 

4.Enable SID History: Use the ADMT to enable SID History on the new accounts in domain B. This will allow the new accounts to access resources in domain A with the same permissions as their original accounts.

 

5.Verify the migration: Verify that the migrated users can access the resources in domain A and domain B with the same permissions as their original accounts.

 

It's important to note that migrating SIDs using SID History is a complex process and requires careful planning and testing. You should also be familiar with the ADMT tool and the underlying Active Directory infrastructure before attempting a migration. Additionally, you should always backup your data before making any changes to your Active Directory environment.