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Troubleshoot object synchronization with Microsoft Entra Connect Sync

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This article provides steps for troubleshooting issues with object synchronization by using the troubleshooting task. To see how troubleshooting works in Microsoft Entra Connect, watch a short video.

Troubleshooting task

For Microsoft Entra Connect deployments of version 1.1.749.0 or later, use the troubleshooting task in the wizard to troubleshoot object sync issues. For earlier versions, you can troubleshoot manually.

Run the troubleshooting task in the wizard

To run the troubleshooting task:

  1. Open a new Windows PowerShell session on your Microsoft Entra Connect server by using the Run as Administrator option.
  2. Run Set-ExecutionPolicy RemoteSigned or Set-ExecutionPolicy Unrestricted.
  3. Start the Microsoft Entra Connect wizard.
  4. Go to Additional Tasks > Troubleshoot, and then select Next.
  5. On the Troubleshooting page, select Launch to start the troubleshooting menu in PowerShell.
  6. In the main menu, select Troubleshoot Object Synchronization.

Screenshot that shows the Troubleshoot object sync option highlighted in Microsoft Entra Connect.

Troubleshoot input parameters

The troubleshooting task requires the following input parameters:

  • Object Distinguished Name: The distinguished name of the object that needs troubleshooting.
  • AD Connector Name: The name of the Windows Server Active Directory (Windows Server AD) forest where the object resides.
  • Microsoft Entra tenant Hybrid Identity Administrator credentials.

Screenshot that shows the credentials dialog on a PowerShell terminal background.

Understand the results of the troubleshooting task

The troubleshooting task performs the following checks:

  • Detect user principal name (UPN) mismatch if the object is synced to Microsoft Entra ID.
  • Check whether object is filtered due to domain filtering.
  • Check whether object is filtered due to organizational unit (OU) filtering.
  • Check whether object sync is blocked due to a linked mailbox.
  • Check whether the object is in a dynamic distribution group that isn't intended to be synced.

The rest of the article describes specific results that are returned by the troubleshooting task. In each case, the task provides an analysis followed by recommended actions to resolve the issue.

Detect UPN mismatch if the object is synced to Microsoft Entra ID

Check for the UPN mismatch issues that are described in the next sections.

UPN suffix is not verified with the Microsoft Entra tenant

When the UPN or alternate login ID suffix isn't verified with the Microsoft Entra tenant, Microsoft Entra ID replaces the UPN suffixes with the default domain name onmicrosoft.com. To resolve this issue, add the UPN suffix as a verified domain on your tenant. For more information visit Managing custom domain names in your Microsoft Entra ID.

Screenshot that shows an example of an unverified UPN suffix error in PowerShell.

Microsoft Entra tenant DirSync feature SynchronizeUpnForManagedUsers is disabled

When the Microsoft Entra tenant DirSync feature SynchronizeUpnForManagedUsers is disabled, Microsoft Entra ID doesn't allow sync updates to the UPN or alternate login ID for licensed user accounts that use managed authentication. To learn how to enable SynchronizeUpnForManagedUsers feature, visit Microsoft Entra Connect Sync service features.

Screenshot that shows an example of a UPN sync for managed users error in PowerShell.

Object is filtered due to domain filtering

Check for the domain filtering issues that are described in the next sections.

Domain is not configured to sync

The object is out of scope because the domain hasn't been configured. In the example in the following figure, the object is out of sync scope because the domain that it belongs to is filtered from sync.

Screenshot that shows an example of an error caused by a domain that's not in sync scope.

Domain is configured to sync but is missing run profiles or run steps

The object is out of scope because the domain is missing run profiles or run steps. In the example in the following figure, the object is out of sync scope because the domain that it belongs to is missing run steps for the Full Import run profile.

Screenshot that shows an example of an error caused by missing run steps.

Object is filtered due to OU filtering

The object is out of sync scope because of the OU filtering configuration. In the example in the following figure, the object belongs to OU=NoSync,DC=bvtadwbackdc,DC=com. This OU is not included in the sync scope.

Screenshot that shows an example of an OU filtering error in PowerShell.

Linked mailbox issue

A linked mailbox is supposed to be associated with an external primary account that's located in a different trusted account forest. If the primary account doesn't exist, Microsoft Entra Connect doesn't sync the user account that corresponds to the linked mailbox in the Exchange forest to the Microsoft Entra tenant.

Screenshot that shows an example of a linked mailbox error in PowerShell.

Dynamic distribution group issue

Due to various differences between on-premises Windows Server AD and Microsoft Entra ID, Microsoft Entra Connect doesn't sync dynamic distribution groups to the Microsoft Entra tenant.

Screenshot that shows an example of a dynamic distribution group error in PowerShell.

HTML report

In addition to analyzing the object, the troubleshooting task generates an HTML report that includes everything that's known about the object. The HTML report can be shared with the support team for further troubleshooting if needed.

Screenshot that shows an example of an HTML report in PowerShell.

Next steps

Learn more about integrating your on-premises identities with Microsoft Entra ID.