One of the most helpful native tools for troubleshooting problems with domain controllers is DCDiag. In this article, I will show you the basics of using this helpful tool. DCDiag was introduced early ...

When you log in to a Windows 11/10 domain-joined machine and try to connect to the already mapped drive or multiple client workstations are unable to correctly ...

Password replication for read-only domain controllers in Windows Server 2008 Your email has been sent The read-only domain controller is easy to set up, but you need to perform a few more steps to ...

In the first part of this series, I talked about how you could recover your server after a system volume failure. In this article, I want to turn my attention to some special procedures used for ...

Microsoft is investigating LSASS memory leaks (caused by Windows Server updates released during the November Patch Tuesday) that might lead to freezes and restarts on some domain controllers. LSASS ...

Microsoft has resolved a known issue that caused some Windows Server 2025 domain controllers to become unreachable after a restart and triggered app or service failures. Microsoft has fixed a known ...

Microsoft rolls out new Kerberos protections to block RC4 encryption, with enforcement mode becoming mandatory for domain controllers in 2026.

In two previous articles (here and here) I shared some classic Active Directory mistakes people have made that got their companies into serious trouble. Here’s another mistake that on the face of it ...

Tony Northrup is a developer, security consultant and author with more than 10 years of professional experience developing applications for Microsoft Windows. Windows Server 2008 includes a handful of ...

At our organization I'm responsible for our Windows infrastructure and another guy looks after all the Linux/*nix stuff. We're currently running a domain using Windows 2003 R2 Domain Controllers with ...