How to check AD Schema version using PowerShell

In this article, I will show you how to check the AD Schema version using Powershell. First, you need to log into your Active Directory Domain Controller. 

If you have more than one domain controller, you should log in to the forest root domain controller.

Open PowerShell with Administrator Permission

If there is a pop-up screen from the User Account Control or UAC asking, then click Yes.

Run the command Get-ADObject (Get-ADRootDSE).schemaNamingContext -Property objectVersion.

Below is the list of Windows Server versions and the corresponding objectVersion (Schema version) value.

Windows Server version	objectVersion value
Windows Server 2000	13
Windows Server 2003	30
Windows Server 2003 R2	31
Windows Server 2008	44
Windows Server 2008 R2	47
Windows Server 2012	56
Windows Server 2012 R2	69
Windows Server 2016	87
Windows Server 2019	88

You can also remotely run this command on your DC like this:

Invoke-Command -Credential (get-credential) -ComputerName DC.FQDN -ScriptBlock {Get-ADObject (Get-ADRootDSE).schemaNamingContext -Property objectVersion}

Article source: How to check AD Schema Version using PowerShell Command – MSNOOB