Forum Discussion
Databricks ADBC Driver problems after new update
Hi We wanted to start using the ADBC Driver for performance but are getting this error after the latest Power BI Jan 2026 update. What is the recommended action? Next to this we noticed b...
The root cause of this issue (timeout failures during refresh operations) has been identified and will be resolved in the upcoming Power BI release.
As a short term workaround customers can add the MaxNumResultFileDownloadThreads="1" parameter to their Power BI M-code connection string (or rollback to ODBC).
Example M-code: let Source = Databricks.Catalogs( "your-server.azuredatabricks.net", "/sql/1.0/warehouses/your-warehouse-id", [ Implementation="2.0", MaxNumResultFileDownloadThreads="1" ] ),
Thank you for the reply, I tried this. However the refresh / refresh preview in the Power Query is lasting forever after I did what you suggested. Is this normal? Anyone having the same problem?