Microsoft Entra ID
SecuritySecurity Updates Pks
In brief
The warning is bolded: upgrade Microsoft Entra Connect Sync to version 2.5.79.0 or later and configure application-based authentication by April 7, 2027. Synchronization services will stop working after that date if these requirements are not met.
What Entra admins need to know
Administrators must complete the upgrade and authentication configuration by the deadline to avoid synchronization service disruption.
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Documentation change
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@@ -36,7 +36,7 @@ To upgrade to the latest version. > [Install Microsoft Entra Connect](https://www.microsoft.com/download/details.aspx?id=47594) >[!IMPORTANT]->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.+>**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 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.