Category Archives: Hyper-V

Why virtualize Domain Controllers?

This entry is part 1 of 10 in the series Virtualizing Domain Controllers on vSphere

One of the questions I get asked a lot is: Why virtualize Domain Controllers? So, in this blogpost, I’m showing you reasons why virtualization for Domain Controllers and Active Directory is a good idea. I also know there are a lot of caveats when virtualization Domain Controllers, so this blogpost serves as a small part […]


I'll be presenting at Microsoft Sinergija 16

I received a message from Microsoft Serbia on an opportunity to speak at its yearly Sinergija event at the Crowne Plaza hotel and conference center in Belgrade on October 17th and October 18th 2016; An event, a Microsoft subsidiary and a country with an extensive legacy and rich heritage. Readers of my blog in this […]


Knowledgebase: You receive Event-ID 1539 and ‘This device does not allow its write-caching setting to be changed’ warnings on virtualized Generation 2 Domain Controllers

When I was in training as an Active Directory admin, I was taught that the disk(s) where the Active Directory database and Active Directory transaction logs reside are automatically configured with write-back caching disabled. Today, roughly 15 years later, I found out that although my teacher was right, things have changed and might be counter-intuitive […]


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 […]


Active Directory in Hyper-V environments, Part 9

This entry is part 9 of 10 in the series Active Directory in Hyper-V environments

I have written a lot about Active Directory Domain Controllers and Hyper-V in this series. So far you’ve seen recommendations on host configuration, guest configuration, security and converting physical Active Directory Domain Controllers to virtual ones. Today, I’m covering anti-affinity.


KnowledgeBase: Active Directory database becomes corrupted when a Windows Server 2012-based Hyper-V host server crashes

As I’ve written before, Microsoft has made significant strides on making Active Directory Domain Controllers safe(r) to virtualize in Windows Server 2012. Sometimes, however, you encounter a situation that makes all that progress seem to disappear. Microsoft, last week, has released KnowledgeBase Article 2853952, describing such a situation.


List of Hypervisors supporting VM-GenerationID

Microsoft introduced the VM-GenerationID in Windows Server 2012, to enable Virtual Machines (VMs) to notice when they’re snapshotted, restored and/or cloned. Active Directory is the first technology to put the VM-GenerationID to good use. The following Hypervisors support VM-GenerationID: Windows Server 2012 Standard Edition (Hyper-V) Windows Server 2012 Enterprise Edition (Hyper-V) Hyper-V Server 2012  (Hyper-V) […]


Windows 8 and Windows Server 2012 have RTM’ed

Just as Microsoft announced, both Windows 8 and Windows Server 2012 have been released to manafucturers (RTM’ed) in the first week of August. Windows 8 and Windows Server 2012 were RTM'ed with buildnumbers 9200 and build dates of July 25th, 2012. The complete list of products that have been released today is: Windows 8 Windows […]


Server Core Roles and Features in 2008 R2

Server Core installations are versatile, secure and highly-optimized installations of Windows Server. Dubbed ‘Windows without Windows’ by some, these installation in Windows Server 2008 R2 are capable of providing more (infrastructural) services than ever! Just like Full installations of Windows Server 2008 R2, depending on the edition of your choice, or budget, the Server Roles […]