Exchange Install 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’

KB ID 0000793 Dtd 25/03/13

Problem

While installing Exchange 2010 one of my client’s satellite sites, this is what I got.

Organizational Prerequisites Failed 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 {Site-Name}.

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 root and site {Site-Name}, and wait for replication to complete.

Unfortunately I had migrated users and file and print onto this server, so putting it in the car and driving 50 miles north was not an option.

Solution

Luckily for me I had a domain controller at this site, so all I had to do was transfer the Schema Master Role to this site, Install Exchange, then move the role back to the correct server a the main site when I had finished.

Transferring Your FSMO Roles

Remember to wait for domain replication (or force replication from AD sites And Services).

Related Articles, References, Credits, or External Links

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Author: Migrated

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