This article is designed to step an Office 365 administrator or helpdesk technician through the process of manually configuring Outlook (example given in Outlook 2010) to connect to O365.
1. Access the Mail Control Panel item and select ‘Show profiles …”
2. Select the appropriate profile and select Properties
3. Select ‘E-mail accounts …’
4. Highlight the correct account and click ‘Change …’
5. You will need to access OWA at this point for your account (http://mail.office365.com).
6. You will need to access the About option from the “?” icon in the top-right corner of OWA
7. You will need the Host Name from this section
8. You will need to modify this to include ‘mailbox’ in the URL for the Server field, then click More Settings
a. Note: If you can’t change the Server field, continue on to the next step as this will be replaced via AutoDiscover.
9. Navigate to the Security tab and select ‘Always prompt for logon credentials’
10. Navigate to the Connection tab and click “Exchange Proxy Settings…”
11. Enter in the Host Name from step vii into the URL field and include ‘msstd:outlook.com’ for the proxy servers principal name field. Also make sure that BASIC AUTHENTICATION is selected, otherwise, login will FAIL. Select OK after this is entered and then OK, then Next to complete the configuration.
12. Restart your computer to make sure there are no cached settings for Outlook.
13. Launch Outlook from your preferred location (default is the Start Menu or quick-launch bar).
14. Enter your Office 365 credentials when prompted
a. Selecting “Remember my credentials’ will prevent further pop-ups until your password expires.
15. Outlook will now connect to Office 365 and download new mail since you last accessed BPOS (all email if this is a NEW profile).