Raise domain functional level from 2008R2 to 2022
 Show Just as there are no Windows Server 2019 Forest Functional Level (FFL) or Windows Server 2019 Domain Functional Level (DFL), there are no Windows Server 2022 FFL or DFL either in Microsoft Windows Server’s Active Directory Domain Services (AD DS). ImpactThe unavailability of the Windows Server 2022 Forest Functional Level (FFL) and Windows Server 2022 Domain Functional Level (DFL) has the following impact:
Not only are the Windows Server 2022 Forest Functional Level (FFL) and Windows Server 2022 Domain Functional Level (DFL) missing, Windows Server 2022 does not even require a schema update. Active Directory schema version 88 is the latest schema version, and it has been around since Windows Server 2019. When you promote a server to a Domain Controller, however, a Windows Server 2022 installation automatically performs any schema update you may need to become the first Windows Server 2022 Domain Controller. About Active Directory Functional LevelsIn previous versions of Active Directory, each Windows Server version was accompanied by a corresponding Forest Functional Level (FFL) and Domain Functional Level (DFL). When upgrading Domain Controllers to newer versions of Windows Server or transitioning to Domain Controllers running newer versions of Windows Server, the functional levels would unlock new functionality on either the Active Directory forest or Active Directory domain level. RAISING FUNCTIONAL LEVELSOnly when all Domain Controllers for an Active Directory domain would run the newer version of Windows Server, could an Active Directory admin raise the Domain Functional Level (DFL) to the version corresponding with the version of Windows Server. Only when all domains for an Active Directory forest would run the newer Domain Functional Level (DFL), could an Active Directory admin raise the Forest Functional Level (FFL) to the version corresponding with the version of the domains. LOWERING FUNCTIONAL LEVELSStarting with the Windows Server 2008 levels, you can revert to lower Domain Functional Levels and Forest Functional Levels. Note: Note: Note: This paints the following picture: FURTHER READINGKnowledgeBase: The Windows Server 2019
Active Directory DFL and FFL do not exist How do you raise the functional level of a domain?Raising the Domain Functional Level
From the Administrator Tools panel, select Active Directory Domains and Trust. Right-click the root domain for which you want to raise the domain functional level and select Raise Domain Functional Level. Select an available Domain Functional Level and then click on Raise.
How do I raise domain functional level 2008?How to raise forest functional level. Go to Start and open Administrative Tools.. Go to Active Directory Domains and Trusts.. In the left pane, right-click on Active Directory Domains and Trusts and select Raise Forest Functional Level.. How do I update the Active Directory functional level?Select Active Directory Domains and Trusts. From the console, select the domain for which the functional level needs to be raised and right click on it. Click on the Raise Domain Functional Level option. Choose the required value from Select an available domain functional level and click on Raise.
Can I upgrade to server 2022?In-place upgrade
For example, if your server is running Windows Server 2019, you can upgrade it to Windows Server 2022. However, not every older operating system has a pathway to every newer one and some roles or features don't support this or need you to take extra steps.
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