Before requiring two-factor authentication (2FA), you can notify users about the upcoming change and verify who already uses 2FA.
We recommend that you notify organization members, outside collaborators, and billing managers at least one week before you require 2FA in your organization.
When you require use of two-factor authentication for your organization, members, outside collaborators, and billing managers (including bot accounts) who do not use 2FA will be removed from the organization and lose access to its repositories. They will also lose access to their forks of the organization's private repositories.
Before requiring 2FA in your organization, we recommend that you: