topic Re: Dataflow Gen2 Misreads Excel File – Encoding or Format Issue in Data Engineering

Dataflow Gen2 Misreads Excel File – Encoding or Format Issue

prathijp — Mon, 01 Sep 2025 13:30:20 GMT

I’m trying to read and transform an Excel file stored in a SharePoint folder into a Lakehouse table using Dataflow Gen2 in Microsoft Fabric.

I’m using the SharePoint Folder connector, and while the connection works, the Excel data is being read with incorrect or garbled characters, which suggests a possible encoding or format issue.

Interestingly, when I try the same process with a CSV version of the file, the data is read correctly by the dataflow.

I’ve already ensured the file is saved as a proper Excel Workbook (.xlsx), but the issue persists. I’ve attached a sample of the data being read incorrectly.

Could you help me understand why this is happening and how to resolve it?

Re: Dataflow Gen2 Misreads Excel File – Encoding or Format Issue

Shahid12523 — Tue, 02 Sep 2025 04:09:32 GMT

Problem: Dataflow Gen2 misreads Excel from SharePoint due to encoding/streaming issues.
CSV works because it's plain text; Excel needs proper binary stream.

Fix: Use Web.Contents() with a direct SharePoint download URL to fetch the actual Excel file:

let
Source = Web.Contents("https://...download.aspx?...YourFile.xlsx"),
ExcelData = Excel.Workbook(Source, null, true)
in
ExcelData

Re: Dataflow Gen2 Misreads Excel File – Encoding or Format Issue

v-nmadadi-msft — Thu, 04 Sep 2025 04:02:30 GMT

Hi @prathijp ,
Thanks for reaching out to the Microsoft fabric community forum.

In Power Query, use the Excel.Workbook([Content]) function. After connecting through the SharePoint Folder, locate the file’s binary content and apply this function to correctly decode the workbook structure. This ensures the Excel file is interpreted and loaded properly.

I hope this information helps. Please do let us know if you have any further queries.
Thank you

Re: Dataflow Gen2 Misreads Excel File – Encoding or Format Issue

v-nmadadi-msft — Mon, 08 Sep 2025 05:36:21 GMT

Hi @prathijp

I wanted to check if you had the opportunity to review the information provided. Please feel free to contact us if you have any further questions.

Thank you.

Re: Dataflow Gen2 Misreads Excel File – Encoding or Format Issue

v-nmadadi-msft — Thu, 11 Sep 2025 14:50:14 GMT

Hi @prathijp

May I check if this issue has been resolved? If not, Please feel free to contact us if you have any further questions.

Thank you

Re: Dataflow Gen2 Misreads Excel File – Encoding or Format Issue

v-nmadadi-msft — Sun, 14 Sep 2025 03:57:33 GMT

Hi @prathijp ,

As we haven’t heard back from you, we wanted to kindly follow up to check if the suggestions provided by the community members for the issue worked. Please feel free to contact us if you have any further questions.

Thanks and regards