Under the File name field, change the extension from ‘.xlsx’ to ‘.xls’ and save it. Try opening the file again. 2] Use the Open and Repair feature in Excel ...

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.

In comparison, an XLSX file is a regular Excel spreadsheet that doesn't contain this type of code and doesn't require any special steps to open the file and start working. Both the XLSM and XLSX ...

While it’s not quite as easy as opening .docx files in Pages for Mac, it’s not an overly complicated process either. Here's how to open .xlsx spreadsheet files on Mac, iPhone or iPad.

PASADENA, USA: Open Files Inc.announces the release of XLSX Open File Tool, an advanced data recovery tool with a simple interface that is perfectly suitable for users of all skill levels.

The example files used here can be downloaded by clicking the file name: example1.txt, example1.csv, example1.xlsx. (For text format files, you can copy the content on the webpage and paste it into a ...

To create a .xlsx file make sure that the .numbers file is open, then go to the spanner icon in the upper right area of the screen. Click this and a dropdown menu appears.