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1.  In the Home or Inbox tab of Thunderbird, click the Thunderbird Menu to the right of the Search bar then click Account Settings.
   1. OR, go to Tools then Account Settings.
      
2. Click Account Actions, then Add Mail Account.
   
3. Enter your name and email address but do not enter your password. Click Continue.
   
   1. NOTE: if adding a Resource Account or Shared Email, enter the Display Name and Email Address of the Resource Account.
      
4. Thunderbird will attempt to discover the server configuration. If it fails to find the server configuration, enter them as follows then click Done:
   1. NOTE: If you're adding a Resource Account or Shared Email, enter the Username as follows for the Incoming and Outgoing Server: Your-Email@austin.utexas.edu\Resource-Account@austin.utexas.edu
   2. INCOMING SERVER
      1. Protocol: IMAP
      2. Hostname: outlook.office365.com
      3. Port: 143
      4. SSL (Connection security): STARTTLS
      5. Authentication: OAuth2
      6. Username: Your UT email
   3. OUTGOING SERVER
      1. Hostname: outlook.offic365office365.com  
      2. Port: 587
      3. SSL (Connection security): STARTTLS
      4. Authentication: OAuth2
      5. Username: Your UT email 
         
5. A window with a UT Login will appear. Login using your EID credentials then authenticate with Duo.
   
6. You may be returned to the account configuration screen and see a message saying "Unable to log in at server". If so, click Done.
   
7. Then on the Account successfully created screen click, Finish. 

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