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 automatically ...

XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save workbooks, but can also use the XLS format.

Have you ever sent an Excel file to a colleague, only to realize they couldn’t open it because of compatibility issues? Or perhaps you’ve spent hours perfecting a spreadsheet, only to see its ...

If Excel is showing formulas instead of results on your Windows PC, check the cell format, turn off the 'Show Formulas' ...

How to use a conditional format to highlight subtotal rows in Excel Your email has been sent If your subtotaling rows are lost in a sea of worksheet data, use this simple conditional formatting ...