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High severitydata source

Power BI Refresh Error:
ParquetInvalidFile

What does this error mean?

The Parquet file is invalid, corrupted, or not in Parquet format despite the .parquet extension.

Common causes

  • 1The file was corrupted during upload or transfer to storage
  • 2The file has a .parquet extension but is in a different format (CSV, JSON, etc.)
  • 3The Parquet file was written by an incompatible tool or version that produced a non-standard file structure

How to fix it

  1. 1Verify the file is a valid Parquet file by attempting to open it with a Parquet viewer (e.g., DuckDB, Parquet Tools).
  2. 2Re-upload or re-generate the file from the source system.
  3. 3Check if the file was partially written due to an interrupted upload — incomplete Parquet files are unreadable.

Frequently asked questions

Does this error affect all pipeline runs or just the current one?

Depends on the root cause. A persistent misconfiguration fails every run; a transient issue may resolve on retry. Check the run history.

Can this error appear in Azure Data Factory and Microsoft Fabric pipelines?

Yes — the same connector errors appear in both ADF and Fabric Data Factory pipelines.

How do I see the full error detail for an ADF pipeline failure?

In ADF Monitor, click the failed run, then the failed activity. The detail pane shows the error code, message, and sub-error codes.

Will downstream Power BI datasets be affected when an ADF pipeline fails?

Yes — a dataset refreshing after the pipeline will use stale data or fail if the target table was cleared. The Power BI refresh may succeed while serving wrong data.

Official documentation: https://learn.microsoft.com/en-us/azure/data-factory/connector-troubleshoot-parquet

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