Pinch and Zoom on Surface Pro 4 Not Working

Hi our boss here has a Surface Pro 4 and mentioned his Pinch and Zoom on the touch screen isn't working any longer. He used to be able to open an Outlook message and he could pinch and zoom successfully using the touch screen. I know sometimes you actually do pinch and zoom on the touch pad. Is this even possible? The setting on the touch pad control panel is enabled and we are able to pinch and zoom on the pad but only in a browser, not within Outlook.

Does anyone know what to look at or check? thank you!

a full cold power cycle of the Surface seems to have solved the issue. These tablets only go into a low power mode when restarting the OS. Do this by holding the power and volume-up buttons for 12-15 sec...