Repair Excel works with corrupted excel files after viruses, system errors, unstable software. It restores *.xls, *,xlt, *.xlsx, xlsm, *.xltm, *.xltx, *.xlam file formats. Program starts under Win 98 and higher.
Through this blog post, you'll learn how to repair Excel file manually, i.e. without using any paid software. You should not use any paid software. Or if you have no option left other than using professional recovery solution, make sure you download demo or trial version for free evaluation. I hope the shared blog post would be helpful here.