Hello
Are you referring to Windows Live Mail or Outlook email app?
If it is Live Mail, this is an app that has been retired by Microsoft years ago. Many email services, including outlook.com/hotmail.com now requires modern authentication (OAuth2), if the email app doesn't support it, it will work. Since Live Mail is old and outdated, it definitely doesn't meet the OAuth2 requirement.
Consider using the New Outlook email app instead.