AADDS500: Synchronization has not completed in a while

Sebastian Jaschinski 25 Reputation points
2025-10-26T08:25:56.6166667+00:00

We have an Entra Domain Services setup that has been running for several months now without any issues. It is a cloud-only scenario where we only sync users and groups from Entra ID to Entra Domain Services. We now see a warning: The managed domain has not completed synchronization with Azure AD for a long time (AADDS500). We have run the built-in network diagnostics which pass without any problems. Is there any way to trigger the sync? We are kind of helpless how to proceed.

Microsoft Security | Microsoft Entra | Other
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