Just to be clear - is this an Excel Binary type file? - If so - have you verified that it works with Qlik Sense Desktop? I believe what you may be using is a Binary Excel file that this type .xlsb. Can you save this as a .xlsx and try again?
I have attempted to use this (attached) and I get unsupported file format,
If I save as and Excel Workbook.
So please let us know.
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