Microsoft Entra ID
SecuritySecurity Updates Pks
In brief
The required Microsoft Entra Connect Sync version changed from 2.5.79.0 to 2.6.84.0 or later. Application-based authentication must still be configured by April 7, 2027.
What Entra admins need to know
Upgrade Entra Connect Sync to version 2.6.84.0 or later and configure application-based authentication by April 7, 2027, or synchronization services will stop working.
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Documentation change
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Minimum versions
To take advantage of our latest security improvements, we strongly encourage customers to upgrade to the following builds by September 30, 2026. To avoid any service impact, you should be using the following minimum versions:
- Microsoft Entra Connect:
2.5.79.02.6.84.0 or higher - Microsoft Entra Connect Health
- Connect Sync agent: 4.5.2466.0 or higher
- AD DS agent: version: 4.5.2466.0 or higher
@@ -25,7 +25,7 @@ The following table provides information on the features and impact to services, ## Minimum versions To take advantage of our latest security improvements, we strongly encourage customers to upgrade to the following builds by **September 30, 2026**. To avoid any service impact, you should be using the following minimum versions: -- Microsoft Entra Connect: [2.5.79.0](reference-connect-version-history.md#25790) or higher+- Microsoft Entra Connect: [2.6.84.0](reference-connect-version-history.md#26840) or higher - Microsoft Entra Connect Health - Connect Sync agent: [4.5.2466.0](https://aka.ms/connecthealth-download) or higher - AD DS agent: version: [4.5.2466.0](https://aka.ms/connecthealth-adds-download) or higher @@ -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 2.6.84.0 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.