Launch Thunderbird and make sure you are in the account setup page.Set up a account in ThunderbirdĪfter installing Thunderbird you need to configure it for use with your mailbox. Follow the instructions on the site for installing Thunderbird. These instructions require Thunderbird version 78 or later. You can obtain a free download of Thunderbird from the Mozilla website. Please note these instructions are best effort and ITS does not provide technical support for Thunderbird. If your emails do not start loading automatically, click on Inbox again to trigger a sync request.**Currently there is a known issue where IPV6 needs to be disabled in the Thunderbird client in order to function properly** There may then be another prompt for “Permissions requested” Thunderbird is would like to: followed by a list of access items.If you are asked to remain signed in, select No as the app will remember your account information/stay signed in.You do not need to check the Remember me for 30 days because the mail app will remember your account information. You will get a Duo prompt. Authenticate through Duo as you normally would.

Enter Kerberos password and click Sign in. After a second of loading, the BU ADFS sign-in page will load in a mini-browser/kiosk window. Click on Inbox underneath the BU account.Close Tools/Preferences and go back to the inbox tab/window.These settings should automatically be saved.This step is needed because the Authentication Method needed (OAuth2) is not available in the manual configuration server settings drop-down menu. A pop-up will appear asking to confirm that you wish to proceed to advanced configuration, click OK.Leave the remaining information as is – for now.You will be prompted to enter your server settings. Use Configure manually on the Thunderbird client to open server settings.Authentication will likely fail at first.

Enter your full name (it will be used when sending emails from this account), your full BU email address, and your Kerberos password.

In Thunderbird, go to Tools > Account Settings.

Thunderbird office 365 oauth2