To activate the full features of ExcelFIX—specifically the ability to the recovered files—you need a valid license key from the developer.
: Use the official ExcelFIX download to first verify if your data is recoverable. The demo allows you to preview the results before you spend any money.
: Another reputable tool that offers a freemium model for repairing corrupted workbooks. Excel repair software for xlsx & xls files - ExcelFIX
If you are not ready to purchase software, try these built-in or free options first:
ExcelFIX is a specialized data recovery tool developed by Cimaware Software to repair corrupted Microsoft Excel files (.xls, .xlsx, .xlsm). Version 5.75 is part of a series of updates that improved the tool's ability to handle complex formulas and various Excel versions from 95 through Office 365.