- You have a writable domain controller (DC) and a Windows Server 2008-based read-only domain controller (RODC) installed.
- The writable DC is offline.
- The user or the computer is not explicitly added to the Allow group on the writable DC.
- The user or the computer is explicitly added to the Allow group on the writable DC. However, the credentials are not replicated to the RODC.
Note After you do this, a user who logs on as an administrator may still be unable to log on to the RODC. In this case, reset the password, and then replicate the password to the RODC.