One thing that has worked for over a year on ky backup laptop at least, is to use the only setting Microsoft seems to not be able to take away without being in trouble: Windows Update Setting: Don't download over metered connections. Then, any network you connect to go into the networks settings and set as a metered network. The only thing that has made it through from updater was a tiny security update that it was able to download cause I was a bit forgetful once, pretty easy if u ask me