Basic Authentication Transition Guidance: MAPI over HTTP

The following operating system versions and email applications support Modern Authentication.

Device Type Operating System Version Email Application
Windows 8.0 or later Outlook 2016 (exchange only, no POP or IMAP)
Outlook 2019 (exchange only, no POP or IMAP)
Outlook – Office 365 (exchange only, no POP or IMAP)
Windows 10 Mail (exchange only, no POP or IMAP)
Thunderbird v78 or later

MAPI over HTTP: This is likely to be an older version of Outlook for Windows (2013 or earlier).

Fix: The fix is somewhat complex. Please contact SSCS for help.

As an alternative, you can always access email via the web: https://outlook.office365.com/.