Suddenly excel document became problem

Mine .xlsx file in Excel 2016 hung. It unexpectedly closed. I tried to rerun quickly software and after that, the document stopped opening.
 
I invite you to install one of the Open Software (all free) suites which will give you another program to open XLS, XLSX files.

Once opened, do a SAVE AS and use the format; MS Excel 97/2000/XP (.xls) which all spreadsheet programs
can open.
 
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