When opening a damaged or corrupt Excel XLS or XLSX file with Microsoft Excel, you see the following error message:
The file is not in a recognizable format
* If you know the file is from another program which is incompatible with Microsoft Office Excel, click Cancel, then open this file in its original application. If you want to open the file later in Microsoft Office Excel, save it in a format that is compatible, such as text format
* If you suspect the file is damaged, click Help for more information about solving the problem.
* If you still want to see what text is contained in the file, click OK. Then click Finish in the Text Import Wizard.
Below is a sample screenshot of the error message:
When an Excel XLS or XLSX file is corrupt and Microsoft Excel cannot recognize it, the Excel will report this error.
Sample corrupt XLS file that will cause the error. Error1.xls