Click “Save” in the list of items on the left. On the backstage screen, click “Options” in the list of items on the left. To begin, open an existing Office file or create a new one. We’ll use Excel as an example of changing this setting, but it works the same way in Word and PowerPoint. Here’s how to change the default file format for the Save dialog.
If you’re using Word, Excel, or PowerPoint 2016 and you often share your files with people using older versions, it can get tedious to select the option for saving files in the old format every time.
