Koen Verbeeck • 4/15/2026

Fabric Mirroring doesn’t start copying Rows

This article discusses a common issue with Microsoft Fabric Mirroring using Azure SQL DB as the source. Despite configuring replication successfully and the status showing 'running', no rows were copied. The author explains that the root cause was forgetting to grant the Azure SQL DB server's managed identity permissions on the Fabric workspace or mirrored database. Once the managed identity was added as a contributor, replication started working. The post includes monitoring pane details and notes that no errors appeared in logs, making the fix non-obvious.

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#Managed Identity #Service Principal #Azure SQL Database