Domain controller promotion process shows “Windows Server Technical Preview”

When you try to promote a server running Windows Server 2016 as Domain Controller in your Active Directory Forest, you will get a wrong version of Windows Server in the DC promotion wizard. In my environnent, I promoted a Windows Server 2016 but I got an incorrect version of Windows (Technical Preview):


Cause: That’s a bug. Microsoft forgot to update the list values. Windows Server Technical Preview must be replaced by Windows Server 2016.

So you must update your Windows Server with the latest updates. Here, I check if Windows updates are available:


Just click “Install Now” and wait while Windows is applying the lastest CU:


Updates are installed, so you can re-run the DC promotion wizard and notice that the value was updated.


Source : KB3202325


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About Nicolas 248 Articles
I work as a System Engineer, based in Switzerland with a primary focus on Microsoft technologies. I have 8 years experience in administering Windows Servers. . I am a Microsoft MVP for Cloud & Datacenter Management. I also received the PowerShell Hero 2016 award by PowerShell.0rg. And finally, I am "MCSE: Cloud Platform and Infrastructure", "MCSA: Windows Servers", "Administering & Deploying SCCM", and CheckPoint CCSA certified.