One of the big things of 10 is that you can no longer turn updating off. There’s a few optional updates it’ll let you out of but for the most part unless you’re hacking the registry it’s updating whether you want it to or not.
Have you tried configuring it using gpedit.msc?
Theres a thread here on TenForums:
https://www.tenforums.com/tutorials/8013-enable-disable-windows-update-automatic-updates-windows-10-a.html