Remove e-mail address from Windows 10

Solution 1:

My account is local, and I've never used any e-mail client on this computer, however, I use Skype and occasionally check that e-mail through a browser, I assume Windows 10 spied it out of one of those. I have tried removing that e-mail address from the system but to no avail. Where is it stored and how do I get rid of it? enter image description here

You can remove the device from your Microsoft Account here. This will log you out of your Microsoft Account from Windows Store, Skype, and other Microsoft Account associated applications.

What have I tried so far. The usual advice that comes from googling is to change your account type from "Microsoft account" to "local account", and then remove the e-mail from the "Email & accounts" settings. However, my account was "local" to begin with, and for some reason, the "Remove" button is absent (I checked a friend's computer, and it was there, but not on mine): enter image description here

You are looking in the incorrect location. On supported versions of Windows 10, the "Sign in with a local account" option is located within "Your Info" within Settings -> Accounts

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None of the above had any effect. Is there a way to remove it? I have accepted the fact that in our brave new world I can't really have that kind of privacy, but at least I'd like to remain oblivious to that.

The only way to unlink your Microsoft Account is with the "Sign in with a local account" or create a new local account.

I do not log in with that e-mail and its password - I log in with a simple username and a local password. If I open Settings -> Accounts -> Your info, it shows me that local account information and tells me how it would be better if I use a Microsoft account, and gives a link "Sign in with a Microsoft account instead". Maybe it sniffed my Microsoft account and associated it with the local one - then how do I dissociate them back?

This means your local account is NOT linked to a Microsoft Account. You can disassociate your Microsoft Account with your device by clicking the link here and removing the device.