Add to Chrome.
Click 'Add extension' above.
The installation process should take less than a minute.
Next, you'll Create an Account.
What happens if I lose my Google Authenticator device or I need to disable Google Auth?
Whenever you login with Google Authenticator enabled, you are prompted to use your authentication code to login. Underneath the entry field for your code , there is a link entitled
"If you lost your Google Authenticator device, click here to disable Google Authenticator authentication."
Clicking this link will send an e-mail to your LastPass account e-mail address (or security e-mail address if you have set one), that will contain a link that will temporarily disable your Google Authenticator. If you do not receive an email from LastPass, please ensure that emails are not going to Spam and are not blocked by email filters. If you are unable to access your e-mail for some reason, and have lost your Authenticator device, please contact LastPass support.