Setup Incremental refresh

[eRic_LaU]

Dear all I am new with Power BI desktop, I have a huge amount of daily excel files stored in local harddisk, and imported to PBI by folder. It take ver long time to refresh data when I have a new daily file added in the folder. I have try to create a Incremental refresh but it still refresh all the files.

A warrning message was found when I setup the Incremental refresh, it mean i can't use on local data?

Can anyone help on the issue? Thanks a lot.

[Idrissshatila]

Hello @eRic_LaU ,

incremental refresh doesn't work with excel, it should be with a relational database.

check thhis out https://learn.microsoft.com/en-us/power-bi/connect-data/incremental-refresh-overview

[eRic_LaU]

Thanks for the reply. But from the link provided it also mention it also support excel files in folder. Have I missunderstand?

[ppm1 · Accepted solution]

Please see this video. You can leverage incremental refresh when combining files. In your case, you need a gateway to get to local files from the service. Or, preferably, store you files on a SharePoint site.

https://www.youtube.com/watch?v=IVMdg16yBKE

Pat