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Hope this post finds you in good health and spirit.
This post is regarding what is msDS-Behavior-Version ?
The msDS-Behavior-Version attribute is written on the nTDSDSA object representing a DC. The value is the highest domain or forest functional level that the DC is capable of supporting. A DC supports any domain or forest functional level less than or equal to its msDS-Behavior-Version.
The value of the msDS-Behavior-Version attribute on an nTDSDSA object changes during an operating system upgrade of that DC. The value of the msDS-Behavior-Version attribute never decreases.
The absence of the msDS-Behavior-Version attribute on an nTDSDSA object is equivalent to the msDS-Behavior-Version attribute on that object having the value zero.
The following values are defined.
| Identifier | Applicable domain controller operating system | Value |
|---|---|---|
| DS_BEHAVIOR_WIN2000 * | Windows 2000 Server operating system | 0 |
| DS_BEHAVIOR_WIN2003 | Windows Server 2003 operating system, Windows Server 2003 R2 operating system | 2 |
| DS_BEHAVIOR_WIN2008 | Windows Server 2008 operating system | 3 |
| DS_BEHAVIOR_WIN2008R2 | Windows Server 2008 R2 operating system | 4 |
| DS_BEHAVIOR_WIN2012 | Windows Server 2012 operating system | 5 |
| DS_BEHAVIOR_WIN2012R2 | Windows Server 2012 R2 operating system | 6 |
| DS_BEHAVIOR_WIN2016 | Windows Server 2016 operating systemWindows Server v1709 operating systemWindows Server v1803 operating systemWindows Server v1809 operating systemWindows Server 2019 operating system | 7 |
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