Jorge's Quest For Knowledge!

All You Need To Know About Identity And Security On-Premises And In The Cloud. It's Just Like An Addiction, The More You Have, The More You Want To Have!

(2007-03-18) Windows Server Longhorn – Functional Levels

Posted by Jorge on 2007-03-18


Windows Server Longhorn will support three forest functional levels:

  • Windows 2000 — W2K DCs and higher
    • See MS-KBQ322692 for features
  • Windows Server 2003 Interim — Not supported/available!
  • Windows Server 2003 — W2K3 DCs and higher
    • See MS-KBQ322692 for features
  • Windows Server Longhorn — WLH DCs and higher
    • No additional new features. Level is available to prevent the promotion of previous OS-es to a DC

Windows Server Longhorn will support three domain functional levels:

  • Windows 2000 Mixed — Not supported/available!
  • Windows 2000 Native — W2K DCs and higher
    • See MS-KBQ322692 for features
  • Windows Server 2003 Interim — Not supported/available!
  • Windows Server 2003 — W2K3 DCs and higher
    • See MS-KBQ322692 for features
  • Windows Server Longhorn — WLH DCs and higher
    • SYSVOL replicated through DFS-R instead of NTFRS
    • New additional encryption mechanism for Kerberos
    • Recording interactive logon information like:
      • Last successful interactive logon information and from which computer
      • Number of failed interactive logons and the last failed interactive logon information
    • Multiple Password Policies per AD domain. Read more here and here.

NOTE: this information is based upon a beta release of Windows Server Longhorn and thus subject to change in the final RTM release. Do not use Windows Server Longhorn in a production environment without the explicit commitment from Microsoft for help and support.

Cheers,
Jorge
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