Here is the REAL Solution via Microsoft. 

In your www.Office.com Admin Email Account

• Log into your Microsoft Account with your Admin account email

• From your admin panel, click on users, then active users.

• In the pop up on the right, click on mail, them manage email apps.

  everything in here should be checked.

• The last one is the Authenticated SMTP, which, by default, is not.  Click everything on

• Make sure that it is, give it 15 to 30 minutes, then try to do the set up at QB again, and let me know.

In QB

• Click Edit and at the bottom Preferences
• Send Forms
• Select Web Mail
• Add or Edit your email address
• Email Provicer "other"
• Server outlook.office365.com
• Port 587
• Click on the SSL/TLS box