Note that you do not need to run adprep if you are merely joining Windows Server 2008 R2 server to the domain as a member server.
Before running adprep:
- Backup your Active Directory.
- If possible try the procedure in a test environment to make sure there are no conflicting applications in your environment.
- Make sure you are member of Domain Admin, Schema Admin and Enterprise Admin groups.
- Make sure replication is working properly:
On a domain controller run repadmin /showreps and check Last attempt date and status.
Also run repadmin /replsum and check for errors.
Prepare forest
- Log on to your schema master Domain Controller (DC)
To find out which server is your Schema Master, run netdom query fsmo on any DC. - Insert Windows Server 2008 R2 DVD into DVD drive.
- Open Command Prompt and run:
- on 32 bit computer D:\support\adprep\adprep32.exe /forestprep
- on 64 bit computer D:\support\adprep\adprep.exe /forestprep
- Let opration to complete. Make sure there were no errors.
- Allow Active Direcotry to replicate changes throughout the forest
Prepare domain
- Log on to your infrastructure operations master Domain Controller (DC).
To find out which server is your infrastructure operations master, run netdom query fsmo on any DC. - Insert Windows Server 2008 R2 DVD into DVD drive.
- Open Command Prompt and run:
- on 32 bit computer D:\support\adprep32.exe\adprep /domainprep /gpprep
- on 64 bit computer D:\support\adprep\adprep.exe /domainprep /gpprep
- Let operation to complete. Make sure there were no errors.
- Allow Active Directory to replicate changes throughout the domain
Add a new Server 2008 R2 Domain Controller
- Log-on onto Windows Server 2008 R2 member server machine using domain admin account
- Start > Run > dcpromo > OK
- Follow the wizard to install the first Server 2008 R2 DC
