Category Archives: Migration and Integration

The video of my presentation at TechEd North America 2014 is now available

Microsoft has posted the 80-minute video of PCIT-B341 Upgrading Active Directory the Safe Way: Using Virtualization Technologies, the session Mike Resseler and I presented on Friday May 15, 2014 at Microsoft TechEd North America 2014. You can watch this session free of charge over on Channel 9, regardless of whether you’ve attended TechEd North America […]


Is your organization ready for Windows 8.1? Part 15, Roaming Profile incompatibilities

This entry is part 15 of 15 in the series Is your organization ready for Windows 8.1?

In extensively managed networking environments, devices are generally domain-joined and employees gain mobility across these devices through folder redirection, offline files and roaming profiles. VPN access is mostly available, but when looking closely you might distinguish the occasional DirectAccess implementation. In these environments, mobility over several devices, for instance a desktop and a laptop, often, […]


I’m still an ADPrep kinda guy

In Windows Server 2012, Microsoft introduced the new streamlined Active Directory Domain Services Configuration Wizard, that in most Microsoft documentation is labeled the successor to dcpromo.exe. I’m a big fan of the new wizard, but there’s one feature I don’t use: the automatic Active Directory preparation steps it can perform for you to update the […]


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 […]