To migrate the OfficeScan server without losing the Active Directory registration and settings:

1. Stop the OfficeScan Master Service using the Control Panel.
2. Back up the OfficeScan SQL database from the current OfficeScan server using the SQL Server Management Studio Tool.
3. Start the OfficeScan Master Service.
4. Recover the OfficeScan SQL database to the new dedicated SQL 2012 server.
5. Back up the current server settings using the OfficeScan Server Migration Tool.
6. Back up the C:\Program files\Auth Cert Backup Folder.
7. Back up the certificates with the following command:

   CertificateManager.exe –b "strongpassword" C:\Test\Trendmicro.zip

    

   The "strongpasword" is the password for the output ZIP file.
8. Unregister the old OfficeScan server from the Active Directory.
9. Shut down the old OfficeScan server.
10. Deploy a fresh Windows 2012 server with the same network settings and hostname as previous one.
11. Register the new Windows 2012 server to the Active Directory.
12. Deploy IIS role and Message Queuing feature on the new server.
13. Install a new OfficeScan 11.0 server on the Windows 2012 server. During the installation, recover the client certificates from the backup copy. For more information, refer to this article: Files to back up before upgrading, migrating, or uninstalling the OfficeScan server.
14. Make sure to install all the patches similar to those on the original server.
15. Recover the server settings using the server migration tool.
16. Switch server to this database on the new Windows 2012 SQL Server using the SQLTxfr.exe tool located in ..\Admin\Utility\SQL folder.