Microsoft KB Archive/101784

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After Creating Backup Domain Controller Cannot Logon as Admin.

PSS ID Number: 101784

Article Last Modified on 8/8/2001

The information in this article applies to:

  • Microsoft Windows NT Advanced Server 3.1

This article was previously published under Q101784


You make a server a backup domain controller. After setup is complete, you attempt to logon to the administrative account using the correct password. The password validation fails. However, logging on with no password to the administrative account is successful.


A backup domain controller replicates its database from the current domain controller. The initial replication occurs after the Netlogon service is started during the first boot after installation has completed. Before replication occurs (and user account databases are in sync), the backup domain controller has the default database (which includes the Administrator account with no password). Since the initial replication can take an extended period of time (several minutes for a large domain), there is a period after the initial boot during which you can log on to the backup domain controller using the accounts in the default database, but not those accounts in the domain.


Wait for database replication to finish before attempting to log on from a registered account.


Microsoft has confirmed this to be a problem in Windows NT Advanced Server version 3.1. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: prodnt

Keywords: kbnetwork KB101784
Technology: kbWinNT310Search kbWinNTAdvSerSearch kbWinNTAdvServ310 kbWinNTsearch