Power BI is turning 10, and we’re marking the occasion with a special community challenge. Use your creativity to tell a story, uncover trends, or highlight something unexpected.
Get startedJoin us for an expert-led overview of the tools and concepts you'll need to become a Certified Power BI Data Analyst and pass exam PL-300. Register now.
Hello,
I'm building a report where I need to access some data residing on an Excel OneDrive file, which has around 20-30 columns. I connect to this file using the Web Data Source. It connects fine and I can see the data, but for some reason it is now selecting me all columns within the Excel file, and that's a whopping 9.000+ columns filled with nothing but null, as you can see in the screenshot below.
I can easily remove those columns, but this issue has significantly increased the report's loading time from around 3-5 minutes to 2 hours.
Things I've tried:
Has anyone faced the same issue or know of a possible solution to this?
Regards,
Jose.
Solved! Go to Solution.
If someone else lands here with the same issue, apparently after deleting the columns and clearing its contents, all you have to do to fix that is close the file and reopen it later. The scroll bar should be big, meaning that there are few columns to scroll.
If someone else lands here with the same issue, apparently after deleting the columns and clearing its contents, all you have to do to fix that is close the file and reopen it later. The scroll bar should be big, meaning that there are few columns to scroll.
This is your chance to engage directly with the engineering team behind Fabric and Power BI. Share your experiences and shape the future.
Check out the June 2025 Power BI update to learn about new features.
User | Count |
---|---|
8 | |
6 | |
6 | |
6 | |
5 |