Step #3: Use SecureAuth Authenticate to log in to LastPass

Using the SecureAuth Authenticate app, you can log in to LastPass utilizing SecureAuth as your second factor of authentication.

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

Log in from the desktop and authenticate

Open the authenticator app on your mobile device.
Log in to LastPass and access your vault by doing either of the following:
- In your web browser toolbar, click the LastPass icon and then click Open My Vault.
- Go to https://lastpass.com/?ac=1, then enter your username and master password. Click Log In.
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 "Additional Multifactor Options" section will not be displayed.
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.).
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.

Results: 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

On your iOS or Android device, open the LastPass Password Manager mobile app.
Enter your username and master password, then tap or select Log In.
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 Alternate Multifactor" option will not be displayed.
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.).
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.

Results: You have now logged in to the LastPass app on your mobile device and authenticated using the multifactor option configured for your account.

Parent article: Use SecureAuth Authentication

Previous article: Step #2: Set up and configure SecureAuth in LastPass

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