Businesses that switch to Mac computers may encounter problems when attempting to open some file types, such as Excel Spreadsheet (XLS) files. Macs do not have a native program for opening XLS ...

Microsoft Office. Although we said above that you don’t need Microsoft Office/Excel for Mac to open .xlsx files on a Mac, Excel is still the go-to for many spreadsheet users. It’s mainly to do ...

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 ...

Click the red traffic light button to close the Get Info window. Next time you double-click the template file, Finder will create and open a copy of it, leaving the original untouched.