← All Power BI refresh errors
Connectivity
DM_GWPipeline_Gateway_DataSourceAccessError
Power BI dataset refresh error — what it means and how to fix it.
What this means
The gateway was reached but could not access the on-premises source (wrong connection details, source unreachable, or a permission problem).
How to fix it
- Validate the data-source connection details.
- Confirm the source is reachable and the gateway service account has access.
- Check the gateway logs for the specific access error.
Related connectivity errors
- DM_GWPipeline_Gateway_MashupDataAccessError
- Login timeout expired
- The server was not found or was not accessible (SQL error 40)
- Connection denied — Deny Public Network Access (Azure SQL)
- The certificate chain was issued by an authority that is not trusted
- The server name doesn't match the SQL Server SSL certificate
Catch this automatically
RefreshRadar monitors every Power BI dataset refresh and alerts you the moment one fails — with the likely cause and the fix — so you never hear about a broken refresh from your stakeholders first.
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