How to solve OLE DB or ODBC error: [DataFormat.Error] Unspecified error: E_FAIL(0x80004005).
I am connecting using data from access (64bit) but when refresh the data error as shown below. When I try refresh 10 times, it refreshes successfully 3 out of 10. How can I fix this?
How do I know which one to uninstall?
Hey @itlemonfarm,
Did you have the 32bit version installed at one time? It could be that you still have the 32bit Access DB engine installed. Check and see if you do and make sure the 64bit version of the Access DB engine is installed. Power Query: getting DataFormat.Error message when loading to data - Microsoft Community
Did my post answer your question(s)? Mark my post as a solution. This will help others find the solution.
Proud to be a Super User!
Helpful resources
Fabric Data Days
Advance your Data & AI career with 50 days of live learning, contests, hands-on challenges, study groups & certifications and more!
Power BI Monthly Update - October 2025
Check out the October 2025 Power BI update to learn about new features.
FabCon Atlanta 2026
Join us at FabCon Atlanta, March 16-20, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.
