Category Archives: Migration and Integration

Transitioning your Windows Server 2003 Domain Controllers to Windows Server 2012

Your organization might still be running their Active Directory Domain Services on top of Windows Server 2003-based Domain Controllers. You might be looking to replace these servers with Windows Server 2012-based Domain Controllers, either to utilize the new features, make the most out of your virtualization project or to simply do away with the aging […]


Cross-forest Migrating Dynamic Access Control

Six months ago, I wrote on 10 Things you need to be aware of before deploying Dynamic Access Control. As point 8, I told that the Active Directory Migration Tool (ADMT) does not support cross-forest migrating Dynamic Access Control (DAC). As an Active Directory admin, ADMT, obviously, would be the first tool to look you […]


Windows Server 2012 Active Directory Feature Requirements

A while ago, I wrote a blogpost on the requirements you’d need to meet to take advantage of Active Directory features in Windows Server 2003 through Windows Server 2008 R2. Since Windows Server 2012 was released almost a year ago, it’s time to look at the requirements for Active Directory features in Windows Server 2012.


Windows Server 2012-based Domain Controllers and required Active Directory domain and forest functional levels

When your organization is looking to implement Windows Server 2012-based Domain Controllers, your Active Directory environment needs to meet certain requirements. Two of these requirements are the domain functional level and forest functional level. In this blogpost I’ll explain the required domain and forest functional levels for the specific implementation steps.


Updated Active Directory Capacity Planning Guidance Available (adsizer.exe Be Gone!)

Every good Active Directory Domain Services implementation started with sizing Domain Controllers appropriately for the environment in which they needed to be able to service clients for a period of four to five years. For years, we’ve been using adsizer.exe, a part of the Windows 2000 Resource Kit for this purpose.


Windows 8 Migration Checklist

Since Windows 8 is now available, some of our jobs at work is to make plans to replace our Windows client infrastructure. At my employer we’ve already migrated to Windows 8 and this has provided us with a wealth of information, experience and feedback. Some of this information, luckily, I’m able to share with you […]


KnowledgeBase: Adprep "not a valid Win32 application" error on Windows Server 2003, 64-bit version

Recently, Microsoft released KnowledgeBase article 2743367 with the ominous title Adprep “not a valid Win32 application” error on Windows Server 2003, 64-bit version. When you’ve been reading this blog, you might have already guessed what might be causing this issue, even though adprep.exe on the Windows Server 2012 DVD is a perfectly fine Windows 64bit […]


Determining your Windows 8 and Windows Server 2012 version

With the release of Windows 8 and Windows Server 2012, many people are eager to download and install the latest and greatest Operating Systems from Redmond. For people who have deployed one of the pre-release versions of Windows 8, Windows Server 8 and Windows Server 2012, the big question now is which version they are […]


Windows Server 2012 from an Architecture Point of View

Customers often ask me and my colleagues for innovative solutions, based on proven technology. While that sounds like a contradictio in terminus, we always deliver. The key behind these successes is to research and implement new technology in an early stage. From there, we combine these new technologies, where appropriate, with our proven architectural principles […]


How to add a DSRM startup option in Windows Server 2008 and Windows Server 2008 R2

Since Windows Server 2008, Microsoft no longer offers the ability to restart a Domain Controller in Directory Services Restore Mode (DSRM) from the default F8 boot menu.