How can I fix my Excel files? Many of them show this error message:
We found a problem with some content in . Do you want us to try to recover as much as we can? If you trust the source of this workbook, click Yes.
They open with Open Office without problems!
The files have been created in Excel 2010, and saved on a NAS drive
NB: I must use Excel though. I tested with both Excel 2010 and 2013
NB2: This question did not help, unfortunately

does clicking YES, resolve the problem?question – phuclv Mar 09 '19 at 11:23