I didn't read prior references to require that a "new" Outlook profile be created but saw
that access can be accomplished for third party email clients through app permissions
and settings that are possible to make in the Outlook account that agree with settings
selected in the email client app. There are different options and alternatives described
and the way I understood is that creating a new outlook profile was just one option
in a list of different methods, one way among several different options. It may be that
there is more than one way to skin a cat and the same effect is accomplished by the
settings changes and permissions being done manually, as would be automatically
done by the use of alternative methods where the same settings changes are made
for example when a new account is being set up automatically by a new account
helper bot.
As I posted before it does matter what server and port settings you choose to
update login to use OAuth2 and for POP you should use for incoming mail server
outlook.office365.com and port 995. Also make sure your app permissions are
set in the outlook web portal for your outlook account Mail settings to allow
the POP access by the third party client. You will likely get a password challenge
to allow the change to be effected, a Microsoft account password request popup
may appear. Send yourself a test message from another email like gmail and see
if the incoming mail server is responding normally and showing your incoming
test message as it should using the updated authentication login OAuth2.