If you cannot open the Excel file ... Hereafter, you should be able to open the Excel file without any problems. How to fix Excel file format and extension don’t match? To fix the “Excel ...

Update Office Change the extension ... Cannot open this file because some parts are missing? If the Word says that some parts of the file are missing then it means that the file is probably corrupted.

If Microsoft Excel fails to recognize a file in the XLSX or XLS format, the data contained in the file could be corrupted. When you open a corrupted workbook in Excel, the program should ...