Click Next to attempt using an unencrypted connection.
- Use Outlook Web App to access mail in Exchange Online.
- Set up Outlook to access mail in Exchange Online through a Post Office Protocol (POP3) connection. For more info about how to do this, see Set up a POP3 or IMAP4 connection to your email in Outlook 2010 or Outlook 2013.
If Office 365 users who aren't kiosk users get this error message, see the following Microsoft Knowledge Base article:
Article ID: 2826047 - Last Review: Dec 28, 2016 - Revision: 1