opening a .stf file in excel

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Does anyone know how to open a .stf file in excel? After updating my mac to big sur and updating excel, I have not been able to go through the importing steps as I could before.



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I also have no idea :), but I was able to find this information for it.

Maybe this information will help you a little bit further.


File formats supported in Excel for Mac

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The file formats that are listed in the Save As dialog box vary, depending on what type of sheet is active. If you are saving your file into a different format, in most cases, Excel converts only the active sheet. To convert the other sheets in a workbook, switch to each sheet and save it separately.


Thank you for your patience and time.


Wish you a nice day / night with lots of health, joy and love.



I know I don't know anything (Socrates)