Get certified for free when you join Fabric Data Days 2026 and dive into Fabric, Power BI, SQL, AI, and other essential data skills.
Join nowJuly 7 - July 17 | Round 2 of the Power BI Dataviz World Championships. Don't miss your chance! Learn more
I am able to successfully create schedules for automatic data refresh to SQL Server, but when I try to use a Excel file as a datasource, I am always told that I have an invalid login. I have tried Basic with machinename\username, username, Windows, and Anonymous. None of these were successful. Any assistance would be appreciated.
Power BI Preview or Power BI O365?
I am looking to refresh with Power BI preview.
Join us in Barcelona for FabCon and SQLCon, the Fabric, Power BI, SQL, and AI community event. Save €200 with code FABCMTY200.
Join Fabric Data Days 2026: 60 days of free live/on-demand sessions, challenges, study groups, and certification opportunities.