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6.1.4.3 msDS-Behavior-Version: Domain NC Functional Level

Note: Some of the information in this section is subject to change because it applies to an unreleased, preliminary version of the Windows Server operating system, and thus may differ from the final version of the server software when released. All behavior notes that pertain to the unreleased, preliminary version of the Windows Server operating system contain specific references to Windows Server 2016 Technical Preview in the Product Behavior appendix.

The msDS-Behavior-Version for domains is written on both the domain NC root object and the crossRef representing the domain. The attribute on the crossRef is read-only and is kept in sync with the attribute on the domain NC root object. Only the PDC FSMO role owner accepts originating updates to the attribute on the domain NC root.

Requirements: The functional level of a domain is never larger than any domain DC's functional level that hosts or is instructed to host (see section 6.1.2.3) the domain NC. When the functional level of a domain is DS_BEHAVIOR_WIN2003 or greater, the attribute nTMixedDomain on the domain NC root is 0 (see section 6.1.4.1).

The absence of the msDS-Behavior-Version attribute on a domain NC root object is equivalent to the msDS-Behavior-Version attribute on that object having the value zero.

The value msDS-Behavior-Version defines the lower limit on the version of the server operating system that can run on domain controllers within the domain. Ensuring this lower limit allows advanced features to be enabled throughout the domain.

The following values are defined.

Identifier

Domain controller operating systems that are allowed in the domain

Value

DS_BEHAVIOR_WIN2000

Windows 2000 Server operating system

Windows Server 2003 operating system

Windows Server 2008 operating system

Windows Server 2008 R2 operating system

Windows Server 2012 operating system

Windows Server 2012 R2 operating system

Windows Server 2016 Technical Preview operating system

0

DS_BEHAVIOR_WIN2003_WITH_MIXED_DOMAINS

Windows Server 2003

Windows Server 2008

Windows Server 2008 R2

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016 Technical Preview

1

DS_BEHAVIOR_WIN2003

Windows Server 2003

Windows Server 2008

Windows Server 2008 R2

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016 Technical Preview

2

DS_BEHAVIOR_WIN2008

Windows Server 2008

Windows Server 2008 R2

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016 Technical Preview

3

DS_BEHAVIOR_WIN2008R2

Windows Server 2008 R2

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016 Technical Preview

4

DS_BEHAVIOR_WIN2012

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016 Technical Preview

5

DS_BEHAVIOR_WIN2012R2

Windows Server 2012 R2

Windows Server 2016 Technical Preview

6

DS_BEHAVIOR_WINTHRESHOLD

Windows Server 2016 Technical Preview

7

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