Entra Connect prerequisites
Microsoft's edit ·
Microsoft's commit message in MicrosoftDocs/entra-docs · commit c0eea09 · +2 −2 lines · also on GitHub
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This article describes the prerequisites and the hardware requirements for Microsoft Entra Connect.
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>[!IMPORTANT]
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−>**Mandatory Upgrade Required**: All synchronization services in Microsoft Entra Connect Sync will stop working on **September 30, 2026** if you're not on at least version 2.5.79.0. In May 2025, we released this version with a back-end service change that hardens our services. Upgrade before this deadline to avoid any service disruption.
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+>Mandatory upgrade required: Upgrade Microsoft Entra Connect Sync to version 2.5.79.0 or later and configure application-based authentication by April 7, 2027. Legacy authentication is being retired, and synchronization services will stop working after this date if these requirements aren't met.
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−>If you're unable to upgrade before the deadline, all synchronization services will fail until you upgrade to the latest version. The Microsoft Entra Connect Sync installation file is exclusively available on [Microsoft Entra Admin Center](https://entra.microsoft.com/#view/Microsoft_AAD_Connect_Provisioning/AADConnectMenuBlade/%7E/GetStarted). Make sure you meet the minimum requirements including .NET Framework 4.7.2 and TLS 1.2.
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+>If synchronization stops, upgrade to the latest version and configure application-based authentication to restore service. The Microsoft Entra Connect Sync .msi installation file is exclusively available on [Microsoft Entra Admin Center](https://entra.microsoft.com/#view/Microsoft_AAD_Connect_Provisioning/AADConnectMenuBlade/%7E/GetStarted). Make sure you meet the minimum requirements including .NET Framework 4.7.2 and TLS 1.2.
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<a name='before-you-install-azure-ad-connect'></a>
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