Entra Connect prerequisites
Microsoft's edit ·
Microsoft's commit message in MicrosoftDocs/entra-docs · commit 902f8a5 · +2 −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).
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+Microsoft Entra Connect must be installed on a domain-joined server.
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+We recommend using Windows Server 2025 or Windows Server 2022. You can also deploy Microsoft Entra Connect on older Windows Server versions that are in extended support; however, support for this configuration may require [a paid support program](/lifecycle/policies/fixed#extended-support).
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> [!IMPORTANT]
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> There is a [known issue](/windows/release-health/resolved-issues-windows-server-2025#directory-synchronization-fails-for-ad-groups-exceeding-10-000-members) 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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