Windows 10 is notorious for not allowing the disabling of windows updates. I've found a tool that does it, but use this at your own risk, I've used it on many computers without problem, but there is always a chance of something happening, I take no responsibility for damage that occurs due to use of this (unrelated to anything our team developed whatsoever) tool...
That being said... http://dws.wzor.net - Happy Unspying of Windows to you!