Microsoft Entra ID
GeneralConnect Version History
In brief
The documentation replaces version 2.6.90.0 with 2.6.91.0 and updates related guidance, including the 2.6.84.0 support timeline and fixes for existing-database upgrades and Synchronization Service Manager crashes.
What Entra admins need to know
Administrators upgrading with an existing ADSync database should use version 2.6.91.0 or later. Customers who installed 2.6.79.0 should uninstall it and install 2.6.91.0.
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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|2.5.190.0|02 Feb 2027 (12 months after release of 2.6.1.0)|
|2.6.1.0|10 Mar 2027 (12 months after release of 2.6.3.0)|
|2.6.3.0|07 Jul 2027 (12 months after release of 2.6.84.0)|
|2.6.84.0|15 Sep 2027 (12 months after release of 2.6.90.91.0)|
|2.6.90.02.6.91.0||
All other versions are not supported
To read more about autoupgrade, see Microsoft Entra Connect: Automatic upgrade.
2.6.90.91.0
Known issues
- Installing or upgrading to Microsoft Entra Connect version 2.6.84.0 with an existing ADSync database might fail with error
0xE0474352. To install or upgrade with an existing database, use version 2.6.91.0 or later. - Synchronization Service Manager might close unexpectedly when you open Connector Properties and list directory partitions. This issue is fixed in
version 2.6.90.0version 2.6.91.0.
@@ -104,8 +104,8 @@ Required permissions | For permissions required to apply an update, see [Microso |[2.5.190.0](#251900)|02 Feb 2027 (12 months after release of 2.6.1.0)| |[2.6.1.0](#2610)|10 Mar 2027 (12 months after release of 2.6.3.0)| |[2.6.3.0](#2630)|07 Jul 2027 (12 months after release of 2.6.84.0)|-|[2.6.84.0](#26840)|15 Sep 2027 (12 months after release of 2.6.90.0)|-|[2.6.90.0](#26900)||+|[2.6.84.0](#26840)|15 Sep 2027 (12 months after release of 2.6.91.0)|+|[2.6.91.0](#26910)|| **All other versions are not supported** @@ -128,7 +128,7 @@ If you want all the latest features and updates, check this page and install wha To read more about autoupgrade, see [Microsoft Entra Connect: Automatic upgrade](how-to-connect-install-automatic-upgrade.md). -## 2.6.90.0+## 2.6.91.0 > [!IMPORTANT] > This release includes security fixes. We recommend upgrading to this version as soon as possible.@@ -199,11 +199,11 @@ To read more about autoupgrade, see [Microsoft Entra Connect: Automatic upgrade] ### Known issues -- Installing or upgrading to Microsoft Entra Connect version 2.6.84.0 with an existing ADSync database might fail with error `0xE0474352`. To install or upgrade with an existing database, use [version 2.6.90.0](#26900) or later.-- Synchronization Service Manager might close unexpectedly when you open **Connector Properties** and list directory partitions. This issue is fixed in [version 2.6.90.0](#26900).+- Installing or upgrading to Microsoft Entra Connect version 2.6.84.0 with an existing ADSync database might fail with error `0xE0474352`. To install or upgrade with an existing database, use [version 2.6.91.0](#26910) or later.+- Synchronization Service Manager might close unexpectedly when you open **Connector Properties** and list directory partitions. This issue is fixed in [version 2.6.91.0](#26910). > [!IMPORTANT]-> Version 2.6.79.0 is no longer available for download. An issue was identified after release and the installer was recalled. Customers who installed this version should uninstall it and install the [latest available version (2.6.90.0)](#26900) of Microsoft Entra Connect Sync.+> Version 2.6.79.0 is no longer available for download. An issue was identified after release and the installer was recalled. Customers who installed this version should uninstall it and install the [latest available version (2.6.91.0)](#26910) of Microsoft Entra Connect Sync. ## 2.6.3.0