A family of Microsoft word processing software products for creating web, email, and print documents.
No one is disputing that your printer is capable of duplexing. As both the previous respondents have told you, however, this is not a Word setting but a printer setting. Since you can't seem to find the Properties button in Word's Print dialog, let's take a different approach:
- Click Start | Settings | Printers and Faxes.
- Find your printer in the Printers folder.
- Right-click on its icon and choose Properties.
- The dialog you now see will be provided by the printer manufacturer, so we can't tell you exactly what you will see, but the settings you want may be on the Advanced tab (if there is one).
As an example, I have an HP Officejet Pro K5400 Series printer, which is capable of duplexing. On the Advanced tab, there is a button for Printing Defaults. In that dialog, there is a setting for "Print on both sides," which has a choice of "Off" and "Automatically." This is the same dialog I get if I click Properties in Word's Print dialog.