Hi All, I'm trying to Install 1st exchange server in a sub-domain, but getting the below errow. Error: Setup needs to contact the Active Directory schema master but this computer is not in the same Active Directory domain as the schema master (DC=Mig,DC=com). Recommended action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.12&id=2376fec1-b9ce-44db-beb6-cb9ac4788988 Error: Setup encountered a problem while validating the state of Active Directory: Exchange organization-level objects have not been created, and setup cannot create them because the local computer is not in the same domain and site as the schema master. Run setup with the /prepareAD parameter on a computer in the domain Mig and site Default-First-Site-Name, and wait for replication to complete. Error: Local domain needs to be prepared (via 'setup /preparedomain') before server roles can be installed Recommended action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.12&id=55a60a46-f72c-4227-aca5-c204ec6127db Details of my domain: Primary doamin: mail.com Child domain: child.mail.com [i want to install exchange server on this machine] Some body Please help. Warm Regards Nandish N M

Hi Prepare either all domains or just the childdomain from the root domain Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

Here's a link for it http://technet.microsoft.com/en-us/library/bb125224.aspxJonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

Thanks Jonas.... Link gives all steps in detail :)