[Quick Fix] Incorrect Windows Server Technical Preview Functional Level on 2016 RTM

What’s wrong?

  • using Windows Server 2016 RTM (build 14393)
    • Technet’s ISO: en_windows_server_2016_x64_dvd_9327751.iso
    • ISO SHA1: 7e33df150cb4d1fe3503e23433a1867ddd79a6ee
    • when doing Active Directory Domain Services deployment configuration using GUI
    • on the Domain Controller Options page
    • you may see Windows Server Technical Preview both Domain and Forest Functional Level:wrong_dffl_01

How to fix it?

Sidenotes:

  • patch fixes only GUI way and not the PowerShell cmdlet (Install-ADDSForest) to create a new AD forest
    • before and after applying it, while executing Install-ADDSFforest, the new value of Forest/DomainMode argument will be still “WinTreshold” 🙁
  • patch doesn’t affect objectVersion attribute value of “CN=Schema,CN=Configuration,DC=domain,DC=local” which is 87 (Windows 2016)
2018-05-24T22:30:34+00:00