If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

If you see The file couldn't open in protected view error while opening Microsoft Excel, the fixes listed in this post will help you.

Learn how to integrate Robot Framework with Excel for data-driven testing. You will use Excel Library to open, read, and close Excel files with test data.

How to Open an XLS File 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 ...