Microsoft has taken the decision to deactivate any connection using Basic Authentication. Traditionally, this was enabled as default on applications predating 2016.īasic Authentication has become outdated and there are security risks associated with its continued use. It’s the method that applications use to send your username and password to the Microsoft services. Unfortunately, we are unable to make any required changes for you as it’s a local setting on your affected device.īasic Authentication is a method used to connect to email servers. We have put together this handy support guide to help you identify if you’ll be impacted by this change and what you can do to make sure your emails continue to function. From that date, only email clients that support Modern Authentication will be able to connect to the service. Under your email account, select Copies and Folders.From 1 st October 2022 the Microsoft 365 service will no longer support Basic Authentication.

Under your email account, select Server Settings, select the Deleted Items folder under When I delete a message.Right-click on your email account and select Settings.Place a check-mark within the box next to each of these folders: Drafts, Deleted Items and Sent Items if they have not been checked.Right-click on your email account and select Subscribe.Complete the following additional setup steps before start to use Thunderbird.Please wait patiently, especially for larger mailboxes. After the Duo authenticating, the setup is complete.When you attempt to view your inbox, you will be redirected to authenticate through DUO.Office 365) and select OAuth2 under Authenticaiton Method Select Outgoing Settings (SMTP) and then click Edit.Select Server Settings under your email and select OAuth2 under Authenticaiton Method.Click Advanced config and then Yes to proceed with the required configuration.Enter Your name and Email address and click Configure manually.

Select Add Mail Account. under Account Actions.

Righ click Local Folders and select Settings.

Please note that Thunderbird version 78.0 is only offered as direct download from and not as an upgrade from Thunderbird version 68 or earlier that means the previous settings cannot be preserved or imported to this version. 78 or above which supports OAuth2 modern authentication). This document describes how to configure modern authentication with new Thunderbird versions (ver.

Thunderbird 365