I'm getting these emails from Microsoft that states the following...
If you are receiving this email, you are currently using an email or calendar app that uses a less secure authentication method to connect to your Outlook.com email account. You will need to upgrade your third-party mail and calendar app to a version which supports modern authentication methods.
From my understanding, you have to change your account from "Password" to "Oauth2".
Please correct me if I'm wrong.
You're not wrong - please refer to this recent announcement "Outlook will require Oauth2 (modern authentication)" posted by Jeff (yesterday) in the forum "Announcements" board (at the top of the forum).
Good judgment comes from experience and a lot of that comes from bad judgment. - Will Rogers