Entra Connect prerequisites
Microsoft's edit ·
Microsoft's commit message in MicrosoftDocs/entra-docs · commit 019bb96 · +7 −12 lines · also on GitHub
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- Microsoft Entra Connect must be installed on a domain-joined server that runs Windows Server 2022, Windows Server 2019, or Windows Server 2016. We recommend Windows Server 2022. You can deploy Microsoft Entra Connect on Windows Server 2016. However, since Windows Server 2016 is in extended support, you might need [a paid support program](/lifecycle/policies/fixed#extended-support) if you require support for this configuration. Installing on unsupported versions of Windows Server may cause service failures or unexpected behavior.
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− >[!IMPORTANT]
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− >**Windows Server 2025 is NOT supported. There is a known issue on Windows server 2025 with the [KB5065426](https://support.microsoft.com/en-us/topic/september-9-2025-kb5065426-os-build-26100-6584-77a41d9b-1b7c-4198-b9a5-3c4b6706dea9) update installed that will cause Microsoft Entra Connect Sync to encounter sync issues.** If you upgraded to Windows Server 2025 and installed update [KB5065426](https://support.microsoft.com/en-us/topic/september-9-2025-kb5065426-os-build-26100-6584-77a41d9b-1b7c-4198-b9a5-3c4b6706dea9), apply the following registry key as soon as possible to avoid sync disruption.
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− >
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− >```
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− >Windows Registry Editor Version 5.00
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− >
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− >[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Policies\Microsoft\FeatureManagement\Overrides]
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− >"2362988687"=dword:00000000
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− >```
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− >After applying this registry modification, **you must restart the server** for the change to take effect. This registry modification is a workaround. Windows Server 2025 support for Microsoft Entra Connect Sync is planned for a future release.
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+ > [!IMPORTANT]
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+ > **Windows Server 2025 is NOT supported.**
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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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+ > Windows Server 2025 support for Microsoft Entra Connect Sync is planned for a future release.
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- The minimum .NET Framework version required is 4.6.2, and newer versions of .NET are also supported. The .NET version 4.8 and greater offers the best accessibility compliance.
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- Microsoft Entra Connect can't be installed on Small Business Server or Windows Server Essentials before 2019 (Windows Server Essentials 2019 is supported). The server must be using Windows Server standard or better.
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