Advance your Data & AI career with 50 days of live learning, dataviz contests, hands-on challenges, study groups & certifications and more!
Get registeredJoin us at FabCon Atlanta from March 16 - 20, 2026, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM. Register now.
I have recent version of power bi, and have data in xlsx.
on the preview, the data appears ok:
but when I complete the load, errors arise, and I cannot see the errors, and my data has lots of NULL and errors. Below is a snippet:
I cannot upload xls files either, and company policy prohibits me from installing as per https://community.powerbi.com/t5/Desktop/XLS-EXCEL-FILE/m-p/209230#M92275
Is there a way to load from xlsx
Hi @Anonymous ,
Please check your Excel extension, in Power BI Desktop, both Access databases and early versions of Excel workbooks (.XLS files of type Excel 2007-2003) use the Access Database Engine.
While for the .xlsx extension excel file, you can choose the Excel directly.
Best Regards,
Amy
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
I used those methods and still came up with the error mentioned
Hi @Anonymous ,
Try to create a sample data such as 1,2,3, 4,,etc in excel ,and connect it again using the Excel connector, check the result. Based on my test in the latest Power BI Desktop version 2.70.5494.661 , it worked fine.
Best Regards,
Amy
It works with other files. very odd.
I also tried saving as csv, xls, xlsx and onlt this file is affected
Hi @Anonymous ,
Please check if there are some illogical values or data type in your current .xlsx file. If the file data is not large, how about trying to copy and paste it into a new xlsx excel?
Best Regards,
Amy
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Join the Fabric FabCon Global Hackathon—running virtually through Nov 3. Open to all skill levels. $10,000 in prizes!
Check out the October 2025 Power BI update to learn about new features.
| User | Count |
|---|---|
| 76 | |
| 38 | |
| 31 | |
| 27 | |
| 26 |