Forum Discussion
Error when refreshing Dataflow (Microsoft.ACE.OLEDB.12.0')
Hi iToune ，
This is legacy file type,
Will it be possible to save the file as xlsx, if yes then you are good
If Not, you have to use Power BI Gateway and on Gateway server install Microsoft.ACE.OLEDB.12.0 Provider.
ACE.OLEDB.12.0 provider not registered on local machine | Microsoft Learn
If it does not help, please provide more details.
Best Regards
Community Support Team _ Polly
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Thanks you for the answer. I'm not sure I get the 'legacy file' part. Is the xlsm no longer supported by microsoft? Why does it work on Power BI Desktop?
Hi iToune ,
The above SharePoint folder approach only works for XLSX files. The Power BI Desktop and the Power BI service both support both Excel file formats (XLS and XLSX). However, refresh does not. If the source file format is XLS, and a refresh is attempted, you will receive the classic “microsoft.ace.oledb.12.0 provider” error in the Power BI service.
More details: Using Excel Files with Power BI Desktop and SharePoint – The White Pages (tygraph.com)
I have also found some similar posts, please refer to.
Solved: Need help with error message - Microsoft Power BI Community
Solved: Dataflow error: "Microsoft.ACE.OLEDB.12.0 provider... - Microsoft Power BI Community
Best Regards
Community Support Team _ Polly
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.OK thanks I will look into these.
But my file are XLSM, not XLS (which I understand is an old format).