Forum Discussion

Rodrigo33333's avatar
Rodrigo33333
Frequent Visitor
9 months ago
Solved

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Hello everyone, Im new in Fabric and I want to do some projects to known how it works. My firts try was with an excel file, but i have an error, the extension of the file is .xls, is that a problem?
one lake
  • shashiPaul1570_'s avatar
    shashiPaul1570_
    9 months ago

    Hi Rodrigo33333,

    Yes — the issue is because your file is .xls, which is the very old Excel format (Excel 97–2003).
    Microsoft Fabric and most modern connectors do not support .xls files.

    Open the file in Excel → Save As → Excel Workbook (.xlsx).
    Then upload the .xlsx file into Fabric or OneLake — it will work without issues.

    Why this is required?

    Fabric uses the newer OpenXML standard, and older .xls files aren’t compatible with the ingestion engine.

    If this helps, please consider giving a kudos 👍 and marking it as the solution ✅ so it helps others too.

    Thanks & Regards
    Shashi Paul 

shashiPaul1570_'s avatar
shashiPaul1570_
Responsive Resident
9 months ago

Hi Rodrigo33333,

Yes — the issue is because your file is .xls, which is the very old Excel format (Excel 97–2003).
Microsoft Fabric and most modern connectors do not support .xls files.

Open the file in Excel → Save As → Excel Workbook (.xlsx).
Then upload the .xlsx file into Fabric or OneLake — it will work without issues.

Why this is required?

Fabric uses the newer OpenXML standard, and older .xls files aren’t compatible with the ingestion engine.

If this helps, please consider giving a kudos 👍 and marking it as the solution ✅ so it helps others too.

Thanks & Regards
Shashi Paul