New Post: Microsoft Excel 97-2003 Worksheet (.xls) bad signature override?

Hi All

Well i had the same issue and i think i figured out a solution.

1- Open the file in microsoft excel
2- File > Export > Change File Type
3- I picked Excel 92-2003 Workbook (*.xls)

then used the new exported file instead of the old one

this worked for me, and hope to be helpful for you