LastPass - What if I am Unable to Recover My Master Password?
Requesting a Master Password reset for your LastPass Enterprise account
If you are unable to recover your LastPass Master Password using the self-service recovery options and you are a LastPass Enterprise user, contact the DoIT Help Desk to request a Master Password reset. In order for this to option to be available, you must have recently logged into your Vault using a LastPass browser extension.
If you are a LastPass Premium or LastPass Free user, you will have to reset your LastPass account via: https://lastpass.com/reset_account.php. Please note, this will preserve your LastPass account, but erase the contents of your LastPass Vault. You will need to resave your passwords and secure notes.
Please Note: Master Password recovery is not applicable for LastPass Enterprise accounts using NetID Login. Also, LastPass (LogMeIn) cannot reset or recover a forgotten Master Password.