I'm onboarding our clients onto Modern Authentication and am trying to document the behavior of Outlook desktop (2016/365 click-to-run) with regards to MFA and/or App Passwords.
The Modern Authentication login was triggered on a test user/test machine with a new install, and the Microsoft Authenticator was used along with the M365 credentials. Now I can't seem to unauthenticate: deleted all credentials from Credentials Manager, clicked Sign Out from Outlook, rebooted, to no avail.
Question 1: how to do you actually force a re-authentication with Outlook desktop?
I had assumed we could then use App Passwords to prevent Outlook challenges on the desktop side, but I can't even get that back as an option.
Question 2: Are App Passwords still the recommended means of authentication with Outlook desktop?