Some observations when you set up a Windows 10 S mode computer to Windows 10 Home

Some observations when you set up a Windows 10 S mode computer to Windows
10 Home

It came as Windows 10 S mode, which the new owner had already given it the
WiFi password at her house which I told her she probably shouldn't have
done because "maybe" we could have eliminated the hell below if it couldn't
have logged into Microsoft servers (dunno).

No matter how hard I tried to avoid it, Windows S setup forced her to
create a Microsoft account, there was absolutely no way around that fact,
which asked for personal information such as a real email or phone number,
which she had to give to Microsoft, in addition to bogus location and date
of birth information.

After setting up the PC in Windows S mode, I contacted Microsoft via their
chat mechanism, and they filed support tickets for me, and helped us get
rid of that Microsoft Account, but if she stayed in Windows S mode, there
was absolutely no way to change the log in to log in as a local account.

That's the first caveat.

The option for a local account in Windows S mode simply does not exist,
even though the Microsoft instructions 'say' that option exists (the
support people verified that for me - they were really good IMHO - compared
to most support chats, which I'm sure you're familiar with where they make
you do the basics which you've long ago already done).

Interestingly, the support folks had me download logmein for remote
control, which, on Windows S, is impossible, so I had to switch out of
Windows S (which was easily enough done) for a one-time switch to Windows
10 Home, which only then allowed the support people to log into the
computer remotely.

Interestingly, the instant I switched out of Windows S mode, the option to
set up a local account instantly appeared - which proved beyond a shadow of
a doubt that the problem was Windows S and nothing else (other than idiotic
Microsoft instructions, which essentially lie since they say to select an
option for local login which doesn't exist in Windows 10 S mode).

In summary, this is the sequence to convert Windows S to Windows 10:
1. Set up the computer which FORCES you to create a Microsoft account.
2. Give it bogus information but the recovery email MUST be valid.
3. Switch out of S mode into Windows 10 Home which allows local login
4. Set Windows 10 Home to local account login
5. Delete the Microsoft account (this requires the confirmation email)

The Microsoft account deletion is scheduled for 60 days from now.
(They _really_ want you to create a Microsoft account very badly!)