• RODC (read-only domain controller)

    A read-only domain controller (RODC) is a domain controller that hosts an Active Directory database's read-only partitions.

  • backup domain controller (Windows NT)

    A backup domain controller (BDC) is a role a Windows NT computer takes on to help manage access to network resources.

  • disjoint namespace

    Disjoint namespace is an occurrence in Active Directory when a member computer with one Domain Name Service (DNS) primary suffix does not have the same DNS domain name as the domain of which the co...

  • The best Active Directory tips of 2012

    In 2012, admins were interested in Group Policy and Windows Server 2012 when it came to Active Directory. These are the top tips.

Microsoft Active Directory Tools and Troubleshooting

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  • RODC (read-only domain controller)

    A read-only domain controller (RODC) is a domain controller that hosts an Active Directory database's read-only partitions. 

  • backup domain controller (Windows NT)

    A backup domain controller (BDC) is a role a Windows NT computer takes on to help manage access to network resources. 

  • disjoint namespace

    Disjoint namespace is an occurrence in Active Directory when a member computer with one Domain Name Service (DNS) primary suffix does not have the same DNS domain name as the domain of which the computers are members. 

  • Ntdsutil

    Ntdsutil.exe is a command-line tool for accessing and managing a Windows Active Directory database.  

  • serial port server (serial server or port redirector)

    A serial port server, also called a serial server or port redirector, is a device that transfers data between a computer serial port (COM port) and an Ethernet local area network (LAN). 

  • DNS troubleshooting best practices

    There are several methods to troubleshooting DNS in Windows. In this screencast, Directory Services MVP Gary Olsen demonstrates a few different techniques. 

  • Generating a DNS health check in Windows

    In this short screencast, Directory Services MVP Gary Olsen demonstrates how to use the DCDIAG /TEST:DNS command when troubleshooting DNS issues in Windows Active Directory environments. Video

About Microsoft Active Directory Tools and Troubleshooting

No matter how well-designed your Microsoft Active Directory environment is, situations and issues are still bound to come up that require your attention. That's when the best tools and troubleshooting advice can make life easier on an Active Directory administrator. This topic page features information on Active Directory tools and utilities for IT pros looking for quicker, easier and more efficient ways of managing their Windows 2000 Server, Windows Server 2003 and Windows Server 2008 environments. You'll also find in-depth Active Directory troubleshooting resources from Windows experts trained in solving a variety of Active Directory problems.