HELP FILE

Use Duo Security Authentication

Duo Security is a secure, multifactor authentication application that can be used as an added layer of security to protect your LastPass account.

Note: Feature availability may vary depending on your account type.

To get started, LastPass admins must complete the steps for enabling Multifactor Authentication in the Admin Console.

Set up and configure

For users, in order to use Duo Security, a Duo account is required. Register for an account at https://www.duosecurity.com/lastpass.

  1. Install the Duo Mobile app on your iOS or Android device.
  2. Log in to LastPass and access your Vault by doing either of the following:
    • Go to https://lastpass.com/?ac=1 and log in with your username and Master Password.
    • In your web browser toolbar, click the LastPass icon LastPass then click Open My Vault.
  3. Select Account Settings in the left navigation.
  4. Click on the Multifactor Options tab.
  5. Click the Edit icon Edit option for Duo Security.
  6. Follow the steps in the "Configure Duo Security" section here to finish the setup process.
  7. Once configured, be sure to use the drop down menu for the "Enabled" option and select Yes, then click Update to save your changes.

Using Duo Security authentication to log in to LastPass

You can log in and access your LastPass Vault from a desktop or mobile device.

Log in from the desktop and authenticate

  1. Open the authenticator app on your mobile device.
  2. Log in to LastPass and access your Vault by doing either of the following:
    • In your web browser toolbar, click the LastPass icon LastPass then click Open My Vault.
    • Go to https://lastpass.com/?ac=1 then enter your username and Master Password and click Log In.
  3. When prompted for multifactor authentication, your default multifactor option is served (if multiple). If desired, you can click Additional Multifactor Options, then select your desired multifactor option from the list at the bottom.

    Note: If you are part of a company account and a policy has been enforced to only allow one multifactor option, the "Use Alternative Multifactor" section will not be displayed.

  4. Follow the prompts to authenticate, which will vary depending on how multifactor authentication is configured for your account (e.g., 6-digit passcode, SMS code, push notification, voice call, etc.).
  5. If desired, toggle on the switch for the Trust this computer for 30 days setting and provide a computer name on the LastPass authentication dialog. Otherwise, click Authenticate.

    Learn more about managing your trusted devices.

You have now logged in to LastPass and authenticated using the multifactor option configured for your account.

Log in from a mobile device and authenticate

  1. On your iOS or Android device, open the LastPass Password Manager mobile app.
  2. Enter your username and Master Password, then tap or select Log In.
  3. When prompted for multifactor authentication, your default multifactor option is served (if multiple). If desired, you can tap or select Use Alternate Multifactor, then select your desired multifactor option from the list at the bottom.

    Note: If you are part of a company account and a policy has been enforced to only allow one multifactor option, the "Use Alternative Multifactor" section will not be displayed.

  4. Follow the prompts to authenticate, which will vary depending on how multifactor authentication is configured for your account (e.g., 6-digit passcode, SMS code, push notification, voice call, etc.).
  5. If desired, you can toggle on the switch for Trust this device so you are not prompted to authenticate within the next 30 days. Otherwise, tap or select Next to continue.

    You have now logged in to the LastPass Password Manager mobile app and authenticated using the multifactor option configured for your account.

Using multiple multifactor authentication options

Please note that if you have more than one Multifactor Authentication option enabled for your account, you must select your desired default authentication option from the drop-down menu at the bottom of your Multifactor Options window in order to be prompted to authenticate with your preferred option when logging in to LastPass.

Disabling authentication for a new or lost device

If your phone number has changed or the mobile device used for authentication is lost, you can disable Multifactor Authentication via email so that you can log in to your LastPass account.

Additionally, the Duo admin for your account will need log in to Duo and to go to Duo Admin Panel > Users > [your account] > Phones and remove your phone number. Once removed, log in to your LastPass account and re-enable Duo Security as your multifactor option. You will be prompted to enroll your device again.