Entra Connect prerequisites
Microsoft's edit ·
Microsoft's commit message in MicrosoftDocs/entra-docs · commit 0ea9991 · +1 −1 lines · also on GitHub
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#### Installation prerequisites
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−Microsoft Entra Connect must be installed on a domain-joined server that runs Windows Server 2025 or Windows Server 2022. You can deploy Microsoft Entra Connect on older Windows Server versions in extended support; however, support for this configuration may require [a paid support program](~/lifecycle/policies/fixed#extended-support). Installing unsupported versions of Windows Server may cause service failures or unexpected behavior.
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+Microsoft Entra Connect must be installed on a domain-joined server that runs Windows Server 2025 or Windows Server 2022. You can deploy Microsoft Entra Connect on older Windows Server versions in extended support; however, support for this configuration may require [a paid support program](/lifecycle/policies/fixed#extended-support). Installing unsupported versions of Windows Server may cause service failures or unexpected behavior.
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> [!IMPORTANT]
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> There is a known issue on Windows Server 2025 that can cause Microsoft Entra Connect Sync to encounter synchronization problems. If you upgraded to Windows Server 2025, make sure you have installed [October 20, 2025 - KB5070773](https://support.microsoft.com/topic/october-20-2025-kb5070773-os-build-26100-6901-out-of-band-f8effaa1-1c73-41e5-bcb3-e58a46c7601e) update, or later. After installing this update, restart the server for the changes to take effect.
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