You can configure two-factor authentication using a mobile app. You can also add a security key.
We strongly recommend using a time-based one-time password (TOTP) application to configure 2FA. TOTP apps support the secure backup of your authentication codes in the cloud and can be restored if you lose access to your device.
Warning:
- If you're a member or outside collaborator to a private repository of an organization that requires two-factor authentication, you must leave the organization before you can disable 2FA on your GitHub Enterprise Server instance.
- If you disable 2FA, you will automatically lose access to the organization and any private forks you have of the organization's private repositories. To regain access to the organization and your forks, re-enable two-factor authentication and contact an organization owner.
Configuring two-factor authentication using a TOTP mobile app
A time-based one-time password (TOTP) application automatically generates an authentication code that changes after a certain period of time. We recommend using cloud-based TOTP apps such as:
Tip: To configure authentication via TOTP on multiple devices, during setup, scan the QR code using each device at the same time. If 2FA is already enabled and you want to add another device, you must re-configure 2FA from your security settings.
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Download a TOTP app.
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在任何页面的右上角，单击个人资料照片，然后单击“设置”。
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In the left sidebar, click Account security.
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在“双� � 身份验证”下，单击“启用双� � 身份验证”。
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Under "Two-factor authentication", select Set up using an app and click Continue.
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Under "Authentication verification", do one of the following:
- Scan the QR code with your mobile device's app. After scanning, the app displays a six-digit code that you can enter on GitHub Enterprise Server.
- If you can't scan the QR code, click enter this text code to see a code that you can manually enter in your TOTP app instead.
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The TOTP mobile application saves your account on your GitHub Enterprise Server instance and generates a new authentication code every few seconds. On GitHub Enterprise Server, type the code into the field under "Enter the six-digit code from the application". If your recovery codes are not automatically displayed, click Continue.
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在“保存恢复代� �”下，单击“下载”将恢复代� �下载到设备。 将它们保存到安全位置，� 为如果您失去访问权限，恢复代� �可以帮助您回到帐户。
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保存双� � 恢复代� �后，单击“我已保存恢复代� �”，以便为帐户启用双� � 身份验证。
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在保存恢复代� �并启用 2FA 后，建议注销并重新登录您的帐户。 如有问题，例如忘记密� �或输错电子邮件地址， 您可以使用恢复� �访问您的帐户并更正问题。
Configuring two-factor authentication using a security key
配置 2FA 后，使用基于时间的一次性密� � (TOTP) 移动应用 添� 安全密钥，例如指纹读取器或Windows Hello。 启用安全密钥身份验证的技术称为 WebAuthn。 WebAuthn 是 U2F 的继承者，适用于所有现代浏览器。 有关详细信息，请参阅“WebAuthn”和“是否可以使用。”
On most devices and browsers, you can use a physical security key over USB or NFC. Some browsers can use the fingerprint reader, facial recognition, or password/PIN on your device as a security key.
Authentication with a security key is secondary to authentication with a TOTP application. If you lose your security key, you'll still be able to use your phone's code to sign in.
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You must have already configured 2FA via a TOTP mobile app.
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Ensure that you have a WebAuthn compatible security key inserted into your computer.
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在任何页面的右上角，单击个人资料照片，然后单击“设置”。
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In the left sidebar, click Account security.
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Next to "Security keys", click Add.
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Under "Security keys", click Register new security key.
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Type a nickname for the security key, then click Add.
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Activate your security key, following your security key's documentation.
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Confirm that you've downloaded and can access your recovery codes. If you haven't already, or if you'd like to generate another set of codes, download your codes and save them in a safe place. If you lose access to your account, you can use your recovery codes to get back into your account. For more information, see "Recovering your account if you lose your 2FA credentials."
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在保存恢复代� �并启用 2FA 后，建议注销并重新登录您的帐户。 如有问题，例如忘记密� �或输错电子邮件地址， 您可以使用恢复� �访问您的帐户并更正问题。