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.

XLS files are spreadsheet files created by Microsoft Office Excel. An Excel spreadsheet can contain anything from images and plain text to graphs and tables and can be opened using Excel. If a ...

While it is technically possible to open an Excel file in Notepad, this is not a good idea. Excel files are binary files that contain complex formatting and data structures. When you open an Excel ...

If you notice that your Excel files are opening in Notepad, then read this post to learn how to fix the issue. The default behavior of a document or file is to open in the application with which it ...

If Formula Auditing in Excel is not seen or working or grayed out, follow these instructions to fix it e.g. disable worksheet ...

If you're still saving Excel spreadsheets with a three-letter .xls extension, you're lugging around a digital anchor from the era of dial-up. Beyond being a 1990s relic, these legacy files are slow, ...

Keep your workbook tidy and efficient.

What happens when you want to edit a Microsoft Excel .xlsx file on a Mac, iPhone or iPad? While it’s not quite as easy as opening .docx files in Pages for Mac, it’s not an overly complicated process ...

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 ...

I'm hearing rumblings about some of our APAC users taking minutes at a time to load excel files over the network from the local file server. This seemed to start about 3 weeks ago, the troubleshooting ...