If you don't see the Windows icon, it may be that the icon is being "blocked" by your Navigation Icon area settings (what you see when you click the upward arrow to the left of your system icons in the taskbar).
Try going to
Control Panel/Navigation Area Icons and see if the Get Windows 10 icon is listed. If it is, change its setting to "Show Icon and Notifications".
If you can't find that icon in the list, check out
Windows 10 FAQ.