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.

As many people Unblock the downloaded file without opening it, it might get you into trouble at times. That is why you can enable this setting to always open old Excel spreadsheets in Protected View.

How to Open Excel 2007 Files As Separate Windows. If you work with multiple Excel files over the course of a workday, and especially if you use a dual-monitor setup, you might wonder how you can ...

If your Excel files are opening in Notepad on Windows PC, here's how you can reset the settings to make .xls, .xlsx, etc files open in Excel.

If you're looking for an easy way to recover unsaved Excel files, this is the guide for you. We'll show you how to recover unsaved workbook quickly and easily, so you can get back to work.

Numbers has the ability to open Excel files so you can work on them. You can also export spreadsheets in Numbers so that they are compatible with Excel.