SMTP Notification stopt working with Outlook.com

[Xenomes]

The problem

Out of the Blue the integration stop working with outlook.com

What version of Home Assistant Core has the issue?

core-2024.9.3

What was the last working version of Home Assistant Core?

core-2024.9.1

What type of installation are you running?

Home Assistant Container

Integration causing the issue

SMTP

Link to integration documentation on our website

https://www.home-assistant.io/integrations/smtp

Diagnostics information

No response

Example YAML snippet

notify:
  - platform: smtp
    name: outlook_email
    server: smtp-mail.outlook.com
    port: 587
    timeout: 15
    sender: [email protected]
    encryption: starttls
    username: [email protected]
    password: !secret smtp
    recipient:
      - [email protected]
    sender_name: Home Assistant
    debug: true

Anything in the logs that might be useful for us?

Logger: homeassistant.components.smtp.notify
Bron: components/smtp/notify.py:165
integratie: smtp (documentatie, problemen)
Eerst voorgekomen: 19:53:45 (1 gebeurtenissen)
Laatst gelogd: 19:53:45

Login not possible. Please check your setting and/or your credentials
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/smtp/notify.py", line 165, in connection_is_valid
    server = self.connect()
             ^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/smtp/notify.py", line 158, in connect
    mail.login(self.username, self.password)
  File "/usr/local/lib/python3.12/smtplib.py", line 750, in login
    raise last_exception
  File "/usr/local/lib/python3.12/smtplib.py", line 739, in login
    (code, resp) = self.auth(
                   ^^^^^^^^^^
  File "/usr/local/lib/python3.12/smtplib.py", line 662, in auth
    raise SMTPAuthenticationError(code, resp)
smtplib.SMTPAuthenticationError: (535, b'5.7.139 Authentication unsuccessful, basic authentication is disabled. [AS4P189CA0013.EURP189.PROD.OUTLOOK.COM 2024-10-01T17:53:45.897Z 08DCE1D9067A3E4B]')

Additional information

In the log, there is 'Authentication unsuccessful, basic authentication is disabled.' My suspicion is that Microsoft has disabled it. https://support.microsoft.com/en-us/office/outlook-and-other-apps-are-unable-to-connect-to-outlook-com-when-using-basic-authentication-f4202ebf-89c6-4a8a-bec3-3d60cf7deaef