How to remove the "Get Windows 10" notification icon from the taskbar in Windows 8.
- Click the arrow next to the notification.
- Select Customize...
- Find GWX and set the value to Hide icon and notifications.
- Click OK.
- GWX is also an application that can be killed by right-clicking on the taskbar, opening the Task Manager, finding GWX, and clicking End task.
- To prevent all future update notifications, disable Windows update in PC settings > Update and recovery > Windows Update > Choose how updates get installed > Never check for updates.
Video:
https://www.youtube.com/watch?v=XIhp6S1Kl-M