Microsoft Entra Connect Health shows old information about on-premises Microsoft Entra Connect server

This article discusses an issue in which Microsoft Entra Connect Health shows outdated information about the on-premises Microsoft Entra Connect server.

Original product version:   Microsoft Entra ID
Original KB number:   4053427

Symptoms

Microsoft Entra Connect Health blade no longer shows up-to-date information (for example, synchronization errors) about the on-premises Microsoft Entra Connect server. In some cases, the Microsoft Entra Connect Health Insight Service that is running on the Microsoft Entra Connect server crashes and generates the following Windows Application event:

Log Name: Application
Source: Application Error
Date: 10/19/2017 8:03:19 AM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: XXXXXXX
Description: Faulting application name: Microsoft.Identity.AadConnect.Health.AadSync.Host.exe, version: 3.0.68.0, time stamp: 0x5965450e Faulting module name: ntdll.dll, version: 6.3.9600.18696, time stamp: 0x59153753 Exception code: 0xc0000374 Fault offset: 0x00000000000f1c00 Faulting process id: 0x624 Faulting application start time: 0x01d348d2403fcb09 Faulting application path: C:\Program Files\Microsoft Azure AD Connect Health Sync Agent\Insights\Microsoft.Identity.AadConnect.Health.AadSync.Host.exe Faulting module path: C:\Windows\SYSTEM32\ntdll.dll Report Id: 7eb31450-b4c5-11e7-80cb-005056ba3ca2 Faulting package full name: Faulting package-relative application ID:

Cause

The issue occurs if there is version mismatch between Microsoft Entra Connect Synchronization Service and Microsoft Entra Connect Health for Sync applications. This issue may occur if either component was not successfully upgraded during the last Microsoft Entra Connect upgrade or auto-upgrade.

To verify that an existing Microsoft Entra Connect server has a version compatibility issue between the two applications, follow these steps:

1. Get the version of the applications from the Programs item in Control Panel.

   

2. Compare the version information against the following compatibility table:

   Synchronization Service version	Compatible Health Agent version
   1.1.614.0 (or earlier version)	3.0.68.0 (or earlier version) 3.0.127.0
   1.1.647.0 (or later version)	3.0.103.0 3.0.129.0

Resolution

To resolve this issue, use one of the following methods.

Method 1

Manually upgrade your Microsoft Entra Connect server to version 1.1.649.0 or a later version. During the manual upgrade, both applications will be upgraded to the versions that are compatible with each other.

For more information about how to upgrade Microsoft Entra Connect server, see the following Azure article: Microsoft Entra Connect: Upgrade from a previous version to the latest

Method 2

Manually reinstall Health Agent for Sync to a version that is compatible with the Synchronization Service version that is installed on the Microsoft Entra Connect server. For example, you have an existing Microsoft Entra Connect server that has Synchronization Service version 1.1.647.0 and Health Agent for Sync version 3.0.68.0. To resolve the incompatibility issue, you can reinstall Health Agent for Sync version 3.0.129.0.

To reinstall Health Agent for Sync:

1. Determine the version of Health Agent that is compatible with the version of Microsoft Entra Connect Synchronization Service that you have installed. If you have Microsoft Entra Connect Synchronization Service version 1.1.647.0 or a later version, use Health Agent Version 3.0.129.0.

2. Download a copy of the Health Agent installer (AadConnectHealthAadSyncSetup.exe) from the following Microsoft Download Center website:

   Download and install Microsoft Entra Connect Health Agent

3. Log on to the Microsoft Entra Connect server by using an account that has Local Administrator rights.

4. To uninstall the existing version of Health Agent, follow these steps:

   1. Go to Control Panel > Program and Features. Select Microsoft Entra Connect Health Agent for Sync, and then select Uninstall.

      Note

      This opens the setup window for the Health Agent.

   2. In the setup window for Health Agent, select Uninstall.
   3. After the uninstallation process finishes, select Close.

5. To install the compatible version of Health Agent:

   1. Double-click the downloaded executable file.

   2. On the Setup screen, select Install.

   3. After the installation finishes, select Close.

      Important

      Do not select Configure.

   4. Start a new PowerShell session. Register the installed Health Agent with Microsoft Entra ID by running the following cmdlet:

      Register-AzureADConnectHealthSyncAgent -AttributeFiltering:$false -StagingMode:$false
      

   5. When you are prompted for credentials, provide your Microsoft Entra Global Admin credentials.

   6. Wait about two hours, and then verify that the Health panel is showing up-to-date information about Sync.

Contact us for help

If you have questions or need help, create a support request, or ask Azure community support. You can also submit product feedback to Azure feedback community.