Nuke Windows 10 Upgrade Prompt

Step 1: Right Click Taskbar > Properties

Right-click in the middle of the taskbar at the bottom of the screen (not inside system tray at bottom right).

Click "properties"

Step 2: Click "Customize"

Step 3: Hide the Prompt

This is where you can select an icon that appears and choose to hide it. Find the Windows 10 prompt and select "hide" from dropdown menu.