Many organizations still have pockets of resistance in the form of outdated, legacy setups that are often in key areas of the on-premises infrastructure, such as domain controllers. With the recent ...

Upgrading an Active Directory forest to run on Windows Server 2025 isn't overly difficult, but the process requires preparation. In its latest Windows Server release, Microsoft introduced several ...

I set up a small server 2003 domain with 5 machines. One PC is a domain controller and the remaining 4 are windows XP machines. I set up DNS on the domain controller. The computer name of the domain ...

A recent security update for a Windows NTLM Relay Attack has been confirmed to be a previously unfixed vector for the PetitPotam attack. Microsoft is investigating a known issue causing authentication ...

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 ...

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 ...

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 ...

Machine Identity Isolation policies can reject valid credentials unless controllers meet the Server 2025 functional level ...