When MS authenticator app is used for 2FA, you might want to add one-time-password entry in 1password as a fallback.

• on the MS site, add a new login method (https://mysignins.microsoft.com/security-info)
• can click on “I want to use a different authenticator app”
• copy the QR code and in 1password add “one time password”

A tenant is the main account for Microsoft 365 and/or Azure. It represents the logical unit under which the users, applications, licences and data of an organisational unit are combined and managed. More information can be found in Microsoft's blog post What is a Tenant?.

To log into a specific tenant with your email address, use the following link:

  https://mysignins.microsoft.com/security-info/?tenant=<%TENANT%>.onmicrosoft.com

Example values for <%TENANT%>: