You should see the names for the passwords in the overview screen now. Copy this to your clipboard or write it down manually in a text editor. Microsoft will generate a random password for you. I recommend using the name of the application that is going to be using the password: In the dialogue box that appears provide a name to remember the password by. Go to the additional security verification page and search for and click App passwords (it looked like a title near the top of the page).Ĭlick on the button for creating a new password. The idea is that by creating passwords for each individual application, one can easily revoke specific applications when one has finished using them. This is referred to as an 'App password', and is more like a 'token', except that it does not expire. We just need to create a specific password that only Thunderbird will use. This tutorial will show you how to resolve this so that you can still use Thunderbird as your email client for office 365.

Unfortunately, it can cause integration issues when one tries to use third-party applications like Thunderbird. Two-factor authentication (2FA), is a fantastic security mechanism that will definitely save you one day.

Connect thunderbird to office 365