Information Technology

Office 365 Mailbox Migration Troubleshooting

Office 365 Mailbox Migration Troubleshooting (This only applies if you are have having issues with your migrated mailbox)   

  • Apple Mail
    • You must delete your old account and create a new one using outlook.office365.com as the incoming server.
    • Apple Mail Post Migration Process directions can be found here.
  • Outlook application on Mac:
    • You should see a popup prompting you to sign-on with your credentials and to restart Outlook. After the restart you should be fully operational once more.
  • Outlook application on Windows:
    • If you use the full Outlook application on Windows to access your email, you will receive a message stating that: "An administrator has made a change to your mailbox requiring you to restart Outlook". Restart Outlook and you will be fully operational once more.
  • Mobile Device Troubleshooting
    • When your mailbox gets moved to Office365, your device should update your email account automatically. If you can no longer connect, check these settings within your device mail account settings.
      • Username should be in the format username@fortlewis.edu, not Fortlewis\username
      • Server Name = outlook.office365.com
    • If you cannot modify these settings, or you are still having issues, please remove the mail account from your mobile device and recreate it.
  • IMAP/SMTP
    • If you run a mail client that is not listed above, and you have configured it to use IMAP and SMTP, you will need to update your mail account settings.  Please update your mail account settings as listed here.
  • POP
    • Do not delete your POP account, or you will lose your existing messages. Please update your mail account settings as listed here.
  • Still have problems? Contact the IT helpdesk at 970-247-7444 or askit@fortlewis.edu for assistance.

IMAP/POP:
    We recommend switching to the Exchange protocol (do not delete your old POP account, or you will lose your existing messages). However, if you wish to keep using IMAP or POP you will need to reconfigure your account to use outlook.office365.com as the incoming server and smtp.office365.com as the outgoing server.