If you'd rather gain access to the Windows Update section of Windows 10 by just clicking on 1 button, rather than having to click on the taskbar icon, then settings, then Updates, etc.... you can just import this custom Opus button, and from that point on, you'll have easy access to the update section. Quick and easy! 
As XML for pasting to your toolbar in Customize mode:
<?xml version="1.0"?>
<button backcol="none" display="icon" icon_size="large" textcol="none">
<tip>Windows Update</tip>
<icon1>#goup</icon1>
<function type="normal">
<instruction>ms-settings:windowsupdate</instruction>
</function>
</button>
Alternatively, the same as a .dcf file for dragging to your toolbar in Customize mode:
Win10 Windows Update Button.dcf (255 Bytes)