How to monitor network usage on Windows 10

1. Right-click the taskbar, and click Task Manager.
2. If you see the smaller version of the Task Manager, click the More details button on the bottom left corner.
   
3. Click the App history tab.
   

In this section, you'll see the date since Windows 10 began monitoring the data usage on your apps. You can also click the Delete usage history link to reset the data usage counter, but remember that it'll also reset automatically every 30 days.