FYI
If you start your Windows 10 PC over a wifi connection which you have set up as a "metered" connection (settings-network&internet-wifi- toggle "metered") automatic update is inhibited.
I have to do this all the time with my wee Acer SSHD laptop as it only has a 32 GB SSHD and it cannot buffer a Windows 10 update.
There is probably some geek fix for this but I cannot be arsed. I only use if for cloud-based apps on the go, so it gets the job done, and there is zero data ever on the device so vulnerability is like w/e.