Monthly Archives: January 2014

Using NTDSUTIL Metada Cleanup to Remove a Failed/Offline Domain Controller Object.

Posted on January 27, 2014 by jbernec

In this post, I would like to talk about using the ntdsutil utility for metadata cleanup. A domain controller failure ‘DC00’ recently occurred in my lab. Running the repadmin /replsum command confirmed a replication error and showed DC00 as unavailable: … Continue reading →

Posted in Active Directory, Active Directory Domain Services, AD Forest, DCPromo, Domain Controller, DSRM, Flexible Single Master Operations, FSMO, NTDSUtil, Windows Server 2008 R2, Windows Server 2008 R2 Backup, Windows Server 2012, Windows Server 2012 R2 | Tagged , , , , , , | 15 Comments

Demoting the last Windows Server 2012 R2 Domain Controller with PowerShell.

Posted on January 13, 2014 by jbernec

As with promoting a server to domain controller, demoting the a domain controller is also a straight forward process with PowerShell. The following PowerShell cmdlets are available from the ADDSDeployment module: Uninstall Active Directory: The demote process got a little … Continue reading →

Posted in Active Directory, Active Directory Domain Services, AD Forest, DCPromo, Domain Controller, PowerShell, PowerShell 3.0, Powershell 4.0, Windows Server 2012, Windows Server 2012 R2 | Tagged , , , , , , | 2 Comments

Configuring a Single Windows Server 2012 R2 Active Directory Domain Controller in a new Forest.

Posted on January 6, 2014 by jbernec

Pre-Windows Server 2012 and PowerShell 4.0, the primary tool/command for Active Directory Domain Controller promotion and demotion has always been the Dcpromo command. With Windows Server 2012, it’s been replaced by a suite of PowerShell cmdlets contained in the ADDSDeployment … Continue reading →

Posted in Active Directory, Active Directory Domain Services, AD Forest, PowerShell, PowerShell 3.0, Powershell 4.0, Windows Server 2012, Windows Server 2012 R2 | Tagged , , , , , | Leave a comment