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 ...

Had a power cut today, which took out one of my ESXi hosts on which a Server 2019 domain controller VM was running. It started up on the second ESXi server but now it's not working properly. For ...

Currently I have One 2000 DC and One 2003 DC. Verified both in Sites and Services and in AD within the Domain Controllers OU.<BR>What I need to do is add an additional 2003 DC. That is when this msg ...

This post provides the most suitable solutions to the issue whereby Group Policies are not applying as well as not replicating between Domain Controllers in a typical Windows Server environment. If ...

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 ...

Earlier this week I saw a situation in which someone with a small, single-domain controller network performed a restoration of their domain controller. This restoration effectively reverted the Active ...

If you’re faced with this issue, you can try either of our recommended solutions below to resolve the issue. Restart Server computer Use dsa.msc snap-in on the existing Domain Controller Let’s take a ...

As CISA noted, "installation of updates released May 10, 2022, on client Windows devices and non-domain controller Windows Servers will not cause this issue and is still strongly encouraged." "This ...

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 ...

Microsoft’s May Patch Tuesday update is triggering authentication errors. Microsoft is alerting customers that its May Patch Tuesday update is causing authentications errors and failures tied to ...

You shouldn’t change domain controller network settings, but here’s how to do it if you must Your email has been sent Active Directory domain controllers (DCs) are probably the most change-averse ...