If you have any special characters in your master password, this may be causing the issue as well. Please uninstall and re-install the application. Verify with the same copy/paste from a plain text document that the password is being entered correctly. If you are only seeing this for your mobile device: Please note, we do NOT recommend selecting the 'restore' option unless you have confirmed with LastPass Support that this is the best course of action. If you have updated your Master Password within the last 30 days, you can go through these steps to Revert to your previous Master Password. If you have changed your master password recently, reverted your account, or cleared the browser cache for LastPass, this method may not work. Account recovery is not supported on mobile devices or apps. This method does not work on mobile devices. You should try this on all browsers and on all computers where you've used the LastPass plugin to access your account. If the hint doesn't help, go to the Account Recovery page to activate your local One Time Password. This allows you to change your Master Password if you've logged into LastPass previously on that computer, and is the only way to reset your password. This is a reminder hint NOT your Master Password. If you still receive an 'invalid password' error, use this link to have your Password Hint (which you set up when you created your account) emailed to you. In addition, verify whether Caps Lock (on your keyboard) is enabled or disabled. If you can intermittently login: type your Master Password in a text document and copy/paste to ensure there are no typos. Try logging into the website at - if you can sign in here, please uninstall the extension and re-install and test your login again. We recommend that you start with step one and proceed through each step in order.

Lastpass not working on firefox