Requiring two-factor authentication for an organization

When using LDAP or built-in authentication, two-factor authentication is supported on your GitHub Enterprise Server instance. Organization owners can require members to have two-factor authentication enabled.

When using SAML or CAS, two-factor authentication is not supported or managed on the GitHub Enterprise Server instance, but may be supported by the external authentication provider. Two-factor authentication enforcement on organizations is not available. For more information about enforcing two-factor authentication on organizations, see "Requiring two-factor authentication in your organization."

For more information, see "About two-factor authentication."

Requirements for enforcing two-factor authentication

Before you can require organization members and outside collaborators to use 2FA, you must enable two-factor authentication for your own personal account.

Before you require use of two-factor authentication, we recommend notifying organization members and outside collaborators and asking them to set up 2FA for their accounts. You can see if members and outside collaborators already use 2FA on an organization's People tab.

The verification of two-factor authentication codes requires an accurate time on both the client's device and server. Site administrators should ensure time synchronization is configured and accurate. For more information, see "Configuring time synchronization."

Requiring two-factor authentication for an organization

1. In the upper-right corner of GitHub, select your profile photo, then click Your organizations.
2. Next to the organization, click Settings.
3. In the "Security" section of the sidebar, click Authentication security.
4. Under "Two-factor authentication", select Require two-factor authentication for everyone in your organization, then click Save.
5. If prompted, read the information about members and outside collaborators who will be removed from the organization.
6. In the text field, type your organization's name to confirm the change, then click Remove members & require two-factor authentication.

Viewing people who were removed from your organization

To view people who were automatically removed from your organization for non-compliance when you required two-factor authentication, you can search the audit log using reason:two_factor_requirement_non_compliance in the search field.

1. In the upper-left corner of any page, click .

2. From an administrative account on GitHub Enterprise Server, in the upper-right corner of any page, click .

3. If you're not already on the "Site admin" page, in the upper-left corner, click Site admin.

4. In the "Archives" section of the sidebar, click Security log.

5. Enter your search query using reason:two_factor_requirement_non_compliance. To narrow your search for:

   • Outside collaborators removed, enter action:org.remove_outside_collaborator AND reason:two_factor_requirement_non_compliance

   You can also view people removed from a particular organization by using the organization name in your search:

   • org:octo-org AND reason:two_factor_requirement_non_compliance

6. Click Search.

Helping removed outside collaborators rejoin your organization

If any outside collaborators are removed from the organization when you enable required use of two-factor authentication, they'll receive an email notifying them that they've been removed. They should then enable 2FA for their personal account, and contact an organization owner to request access to your organization.

Further reading

• "Viewing whether users in your organization have 2FA enabled"
• "Securing your account with two-factor authentication (2FA)"
• "Reinstating a former member of your organization"
• "Reinstating a former outside collaborator's access to your organization"