Windows 10: How to REALLY stop Win10 from auto updating?

I'm having a hard time making Windows REALLY stop updating without consent.

The idea is that when I'm turning on my laptop for the first time in a while I'm usually in a place where I'm hotspotting with my mobile phone. Needless to say I need to limit my data flow making sure that no updates are running without consent.
Another annoying issue comes if updates are being loaded. Usually when I'm prepared to shut down the system there is no "shut down" option that doesn't have update related option to go with it. Again needless to say if I need to shut down and move right away there is not time to wait for updates to be installed, I need to plug out of power and go and just yanking the cable out doesn't seem like a healthy solution.

What's the best way to achieve this?

I've searched the forums and found a tutorial. Here's my results on that.

1. There is no gpedit.msc on my system, it seems. Searches, run or CMD come up empty.
2. Searches on registry root with regedit "Enable_Automatic_Updates.reg" come up empty.
3. I do not need to stop driver updates, I need to stop all updates.
4. I don't need to stop non critical updates, I need to stop all updates.
5. Windows update service is now disabled and still forced updates arrive.

Any other ideas? I read in another forum that someone has tweaked their windows to think they have some sort of cable connection so that the Windows thinks it's costly to download stuff so they can't do it legally without permission hence ending the sneaky forced background stuff. Sounds good enough to me but I haven't found out details on what's being done or how to do it.
The goal is
1. never to have ONLY "update and shutdown" options, but also "no thanks, in a hurry today, I'll just want to shut down"
2. prevent any and all unwanted data download until in an environment where it's preferred (such as solid cable, no wifi)

Thanks for replies.

:)

 

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