Category Archives: Virtualization

The video for 'Virtualizing Active Directory the Right Way' from VMware's VMworld 2018 US event is now available

In August, Matt Liebowitz and I presented a 60-minute breakout session during VMware’s VMworld US 2018 event at the Mandalay Bay Convention Center in Las Vegas, Nevada. Our presentation and demos were recorded. Both the stage, the slides and the screen of the demo machine were captured by the VMworld organization. If you were unable […]


Pictures of VMware VMworld US 2018

Last week, I delivered three sessions at VMware’s VMworld US 2018 event in Las Vegas. As I was scheduled to present a full-day workshop on Sunday August 26th, I decided to fly in on Friday, so I’d have the entire Saturday to cope with the jetlag that accompanies crossing 9 time zones. My inbound flight […]


Join me for an Active Directory and Virtualization webinar, in cooperation with Veeam

This year, as a Veeam Vanguard, I’m hosting a series of three Active Directory Domain Services webinars, together with Timothy Dewin and hosted by Veeam. Now that we’ve got the basics covered in our Active Directory 101 session two weeks ago, It’s time to talk Active Directory virtualization on March 7, 2017. I’m very excited […]


KnowledgeBase: ERROR_GEN_FAILURE [0x0000001f] when attempting to join VMware vCenter Server Appliance 6 U1 to a Windows Server 2012 R2-based Active Directory domain

An issue has been identified when you try and join a VMware vCenter Server Appliance (VCSA) version 6 Update 1 to a Windows Server 2012 R2-based Active Directory domain. You receive an error and the VCSA is not joined to the domain.    The situation The VMware vCenter Server Appliance (VCSA) is a virtual installation […]


Running downlevel VMs on Windows 10 Hyper-V? Update the Integration Components

I’m seeing lots of people adopting the Technical Previews of Windows 10 and Windows Server 2016 around me, and running Virtual Machines (VMs) on the built-in Hyper-V hypervisor seems to be among the scenarios tested thoroughly. Microsoft has issued a KnowledgeBase article detailing an update in the Integration Components (ICs) for Windows 7, Windows 8.1, […]


Video: Running highly-sensitive Domain Controllers on Hyper-V and Azure

Active Directory Domain Controllers hold the keys to your kingdom. So how do you virtualize these castles of identity, without compromising on the requirements of your organization? In this session, Raymond Comvalius (Windows Expert – IT Pro MVP) and Sander Berkouwer (Directory Services MVP) give best practices for hardening, backing up, restoring and managing virtualized […]


Virtualization-safe(r) Active Directory in VMware environments, Part 2

In the first post of this series, I’ve shown how to uncover the VM-GenerationID, the random value that unlocks all that Windows Server 2012 Active Directory Domain Services magic, on VMware’s vSphere and Workstation virtualization solutions. Today, I’m showing you how to interpret this value and how this value might be different between versions of […]


Virtualization-safe(r) Active Directory in VMware environments, Part 1

When you check my list with virtualization platforms that support Virtualization-safe(r) Active Directory through the Microsoft backed VM-GenerationID capability, you’ll notice that VMware has been supporting it in their products for a while now: Both VMware Workstation and VMware ESXi support it towards Windows Server 2012 and Windows Server 2012 R2-based Virtual Machines (VMs). Unfortunately, […]


I will be speaking at the 2014 NL VMUG Event

There are many organizations with the ‘VMUG’ initials. I’ve presented sessions to the UK VMUG, which stands for Virtual Machine User Group. In the Netherlands, VMUG stands for VMware User Group. This organization hosts their annual meeting on March 6th, 2014 in Den Bosch and I will be there too, to present a session.      […]


Active Directory in Hyper-V environments, Part 10

As you would probably know, as a regular reader of this blog, Active Directory Domain Services performs a storage trick to prevent corruption in the Active Directory database. It does this by disabling write-back caching on the physical spindle where the Active Directory database resides. This way, the Domain Controller asks the storage device to […]