Microsoft Entra ID
GeneralConnect Install Prerequisites
In brief
The documentation now requires Microsoft Entra Connect Sync version 2.5.79.0 or later and application-based authentication by April 7, 2027. Synchronization services will stop working after that date if these requirements are unmet.
What Entra admins need to know
Upgrade Connect Sync and configure application-based authentication before the deadline to avoid or restore synchronization service interruption.
This editorial summary was generated by AI from the documentation changes. Verify important details in the full Microsoft Learn article.
Documentation change
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@@ -12,9 +12,9 @@ ms.subservice: hybrid-connect This article describes the prerequisites and the hardware requirements for Microsoft Entra Connect. >[!IMPORTANT]->**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.+>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. >->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.+>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. <a name='before-you-install-azure-ad-connect'></a>