If you are enabled for Multi-Factor Authentication (MFA) in Office 365 then you will need an App Password for some applications that do not support MFA. The user interface for creating a new App Password is quite well hidden in Office 365 (its not on the Password page for example).
Here is how to find it.
- The user logs into Office 365 portal (http://portal.office.com) and clicks the cog icon to the top-right of the page
- Click Office 365 Settings
- Scroll down past Password and choose Additional Security Verification
- Click Update my phone numbers used for account security
- Click “app passwords” on the top menu. This takes you to https://account.activedirectory.windowsazure.com/AppPasswords.aspx. You can (and therefore should) bookmark this page now so you don’t need these instructions again!
- Create yourself an additional app password and give it a description.
- Use the new app password in the program that you need to login to.