Issue with Mirrored Azure Databricks Unity Catalog Tables: Data Preview Unavailable

Yeah, I’ve seen this kind of thing pop up with mirrored Unity Catalog tables. It’s super frustrating when everything works fine at first and then just stops for no clear reason.

A couple of things you might wanna try:

• Even though permissions look fine, try re-authenticating the Databricks connection in Fabric. Sometimes token expiration or silent auth failures can mess with preview access.
• Check if the affected schemas have any changes in table structure or metadata after the initial sync. Even small changes can cause the preview to break if Fabric doesn’t re-sync properly.
• Also, try doing a manual refresh of the mirrored catalog from the Fabric side. That sometimes kicks things back into shape.

If none of that helps, it might be worth opening a support ticket. This feels like something that could be happening behind the scenes with how Fabric caches or maintains the mirror.

Let me know if you want help testing a specific schema or table.

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