About turning updates on/off: I think that works for the pro version, but not the Home Edition.
Also, my Control Panel doesn’t have a System and Security icon. It has a System icon, and a Security icon.
I’ve read that one possibility for dealing with this is to mark your wireless connection as metered. But, I prefer to connect directly to my router with a cable.
In any event, if MSFT has logged my return to 1603, and just gives me updates relevant to that, I’ll be happy. Or, if they figure out what the problem is, I’d be happy to upgrade. They sort of threaten you by stating that if you don’t upgrade, your system will still work, but won’t have their latest security updates.
Ignore the crappy music in the video.