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Verifying What Version of AD Our DC is Using

Hello All,

I'd like to verify what my Active Directory version on my Windows 2012 R2 DC is. I have another employee here telling me that it is using 2003 version and needs to be upgraded to 2012. I'm not sure what they mean. I checked the schema version and it is 69 (Windows 2012 R2). As far as I know that is the version of AD.

Is there anything else I could be missing?

ASKER CERTIFIED SOLUTION

Cliff Galiher

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Michael Lainez

ASKER

Ah OK. Is there a way for me to verify what the domain functional level is?

SOLUTION

Cliff Galiher

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Michael Lainez

ASKER

Thanks!

arnold

[if you have a DC that is running Windows 2003, 2003 is likely the domain, forest level you must operate in.

Cliff Galiher

With 2003 several years past end of life, I hope there isn't still a DC runninf that OS. I don't recommend that OS running anywhere, but a DC is particularly bad and should be replaced IMMEDIATELY.

Shaun Vermaak

Via PowerShell

Get-ADObject (Get-ADRootDSE).schemaNamingContext -Property objectVersion

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87 = Windows Server 2016
69 = Windows Server 2012 R2
56 = Windows Server 2012
47 = Windows Server 2008 R2
44 = Windows Server 2008
31 = Windows Server 2003 R2
30 = Windows Server 2003
13 = Windows 2000
https://blogs.technet.microsoft.com/poshchap/2014/03/07/one-liner-active-directory-schema-version/