Can be caused as a result of a problem with the default printer driver.
Change your default printer. Try the following:
• Close all Office programs
• Open Control Panel | Devices and Printers …. Change your default printer driver by selecting a different printer and right-clicking and chosing Set as default printer
• Reopen Office and try sending again
Note: If you don’t have an option to select a suitable printer default, you can choose Microsoft Print to PDF as your default printer.