In article , samkent wrote:

Kernel for Excel File Repair software can repair corrupted or damaged
both .xls or .xlsx excel file without any hassle. It's also capable of
restoring complete data such as text, hyperlinks, objects, graphs, OLE
objects, etc. from corrupted and inaccessible MS excel file. That
software supports all version of MS Excel file and Windows operating
systems. Read mo- http://www.excelfilerepair.org/

Alternatively, try opening the corrupt file in open office (or libre office).
That used to work in a surprisingly large number of cases. :)