AD functional level upgrade planning
Microsoft's edit ·
Microsoft's commit message in MicrosoftDocs/windowsserverdocs · commit 5a87413 · +5 −2 lines · also on GitHub
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- New Windows Server 2008 R2 forest
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−- Windows Server 2016 forest to Windows Server 2022 or Windows Server 2025 (preview)
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+- Windows Server 2016 forest to Windows Server 2025 (preview)
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## Upgrading functional levels to Windows Server 2025 (preview)
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- For new Active Directory forests, the minimum functional level must be set to Server 2016.
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−- Existing domains must be at least at the 2016 functional level to promote a Windows Server 2025 to a domain controller.
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+- Existing domains must be at the 2016 functional level to promote a Windows Server 2025 to a domain controller.
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+> [!NOTE]
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+> Windows Server 2022 used Windows Server 2016 as the most recent functional levels prior to Windows Server 2025.
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Upgrade methods include the following options:
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Microsoft's Markdown source from MicrosoftDocs/windowsserverdocs, © Microsoft Corporation, under CC BY 4.0. Changed lines with up to 3 unchanged lines around each; ChangeIntel kept this copy 10 Oct 07:36 UTC. The commit date is when the source changed, which can be hours or days before Learn published it.