As a followup, If you really want to squash all updates coming through in Windows 10, there is a way to do it by just changing one single file. No matter which version of Windows 10 you are running .
Start up with a Linux LiveCD, (See https://livecdlist.com/ubuntu/
). Or, you can start up with a live Windows 10 CD, something like Hiren's boot CD
So, assuming you boot up in a live CD and can then see what is your windows drive, navigate to [windows drive]:\Windows\System32\
Find 'wuaueng.dll' in this window and right click it.
Create a zip archive from it. You should now have wuaueng.zip (I called mine 'wuaueng-disabled.zip', so it's obvious if I want to enable updates again I can just unzip it when booted up from a live CD again.)
Delete the original 'wuaueng.dll' and empty the bin so it's gone.
Reboot back into Windows and when anything tries to run the update process, it'll just fail. This way the update service can't run, so just quits. Since it can't run, it's unaware of any updates that would otherwise be downloaded automatically .