Forum Discussion
Dataflows Gen2 cannot access Lakehouse Files — missing OneLake internal provider
Hello pbiadminjenhill,
What you’re seeing is expected behavior based on the current design of Dataflows Gen2 in Microsoft Fabric.
Dataflows Gen2 connects to a Lakehouse through the SQL analytics endpoint, which exposes Delta tables only. It does not surface the Lakehouse Files folder structure. As a result:
The Lakehouse connector shows tables, not /Files/...
File paths are treated as external sources and may prompt for a gateway
Combining Parquet files directly from Lakehouse Files isn’t supported
Incremental refresh applies to table sources, not raw file paths
This is a product capability boundary, not a tenant, region, trial, or GoDaddy limitation.
If you need to transform Parquet files stored in Files, first materialize them as Delta tables (via Notebook or Pipeline). Once the data exists as a Lakehouse table, Dataflows Gen2 can access it and support transformations and incremental refresh.
Hi pbiadminjenhill,
Thank you for reaching out to the Microsoft Fabric Community Forum and sharing the screenshot and the details. Also thanks to Olufemi7, deborshi_nag, for those inputs on this thread.
Based on your scenario, this behaviour is expected and not related to your tenant, region, trial status, or GoDaddy licensing. Your Dataflows Gen2 is already connected correctly to One Lake. Currently, when accessing the Lakehouse Files section through the One Lake Catalog connector, Dataflows Gen2 may show files in a flattened view and does not always allow deeper folder-level navigation or direct transformation of Parquet files from nested folders.
To work with these files in Dataflows Gen2, the recommended approach is to first load the Parquet files into Lakehouse Delta tables. You can do this by going to your Lakehouse, navigating to Files, and selecting Load to Table, or by using a Fabric Notebook or Pipeline. Once the data is available under the Tables section, you can connect to it from Dataflows Gen2 without gateway prompts and use features like transformations and incremental refresh.
Refer these links:
1. https://learn.microsoft.com/en-us/fabric/data-factory/dataflows-gen2-overview
2. https://learn.microsoft.com/en-us/fabric/onelake/onelake-overview
3. https://learn.microsoft.com/en-us/fabric/data-factory/connector-lakehouse
4. https://learn.microsoft.com/en-us/fabric/data-engineering/lakehouse-and-delta-tables
Thank you for using the Microsoft Fabric Community Forum.
Thank you for the guidance. I appreciate it!
Hi pbiadminjenhill,
Just checking in to see if the issue has been resolved on your end. If the earlier suggestions helped, that’s great to hear! And if you’re still facing challenges, feel free to share more details happy to assist further.Thank you.