Wednesday , June 10 2020

The Functional Level of the forest is incompatible with this operating system

I want to introduce a Windows 2008 r2 domain controller in a Windows 2012/Windows 2012R2 Domain .

let see how to we can lower Active Directory domain/forest Functional Level from 2012/2012R2 to 2008 R2

image

To See Existing Forest/Domain functional level

Open Power shell in Windows Server 2012 Domain Controller

Import-Module ActiveDirectory

Get-Adforest

image

Get-ADDomain

image

========

Authentication Policies is the only important feature enabled on 2012 R2.

To Reduce the forest/domain functional level to 2008R2

Set-ADForestMode –Identity “testcareexchange.biz” –ForestMode Windows2008R2Forest

Set-ADDomainMode –Identity “testcareexchange.biz” –DomainMode Windows2008R2Domain

 

 

image

Now my 2008R2 domain controller can be introduced .

 

Note – Once Recycle Bin is enabled on 2012/2012R2 Level it won’t allow you to roll back.

About Satheshwaran Manoharan

Satheshwaran Manoharan is an Microsoft Office Server and Services MVP , Publisher of Azure365pro.com. Specialized in Office365 / Microsoft Exchange / Virtualization , Sathesh is an Messaging Expert supporting/Designing/Deploying many medium size businesses to large enterprises when it comes to Corporate messaging and Virtualization Infrastructure

Check Also

Export all Teams Channels and all members in Office 365

In some situations like if we wish to study a new environment or restructure a …

Leave a Reply

Your email address will not be published.