HELP FILE

How do I install the Safari app extension on my Mac?

The Safari app extension is supported on macOS 10.12 (Sierra) or later.  Please note that the Safari Legacy Extension will continue to function on Mac OS X 10.11 (El Capitan) or earlier, however, that extension will no longer receive updates due to Apple restrictions.

If you run into any issues once you have completed the installation steps, you can go through installation troubleshooting. If needed, you can also uninstall the Safari app extension.

Installation

  1. Download the LastPass Safari app extension.
  2. Locate the download, then double-click on the LastPass.dmg file to open.
  3. Click and drag the LastPass app icon to the Applications folder. If you had installed a previous version of the Safari app extension and are prompted that the LastPass.app already exists in the Applications folder, click Replace.
  4. Open the Applications folder, then double-click on the LastPass app and click Open.
  5. In the LastPass Safari extension app window, enter your email address and Master Password, then click Log In.

  1. When prompted, click Open Safari to enable the LastPass for Safari extension. If this prompt is dismissed without enabling, you can manually enable the Safari extension:
    1. In the Menu bar, go to SafariPreferences.
    2. Click on the Extensions tab.
  2. Check the box to enable the "LastPass" option in the left navigation.
  3. You're all set! If you ever need to log out, you can log back in using the LastPass app icon in the Menu bar or via the LastPass Safari web browser extension.

Troubleshooting

Need some help? Below are some known issues and how to resolve them.

Installing on an unsupported version of macOS

  • The Safari app extension is supported on macOS 10.12 (Sierra) or later.  While the Safari Legacy Extension will continue to function on Mac OS X 10.11 (El Capitan) or earlier, that extension will no longer receive updates due to Apple restrictions.

Safari extension menu is blank

The main cause of this issue may be that your "Local Items" Keychain cannot be unlocked ( learn more about possible causes and resolutions for this). If you are using Active Directory credentials to log on to your Mac, or if the permissions for your Mac user account are restricted, please contact your IT administrator to assist with unlocking your "Local Items" Keychain.

Alternatively, here are a few other things you can try:

  • Re-enable the Safari extension:
    1. In the Menu bar, go to SafariPreferences.
    2. Click on the Extensions tab.
    3. Uncheck the box for the "LastPass" option in the left navigation, then check the box again to re-enable it.
  • Quit Safari and relaunch again, as you may have clicked on the extension before LastPass finished logging you in to your account.
  • Upgrade to the latest version of macOS.

You are not running the latest version of the Safari app extension

You can check for updates and install them by doing the following:

  1. Quit Safari.
  2. In the Menu bar, click the LastPass Menu Bar icon Check for updates.
  3. If desired, you can check the "Automatically download and install updates in the future" option to allow LastPass to update automatically when a new version is available.
  4. Click Install Update.
  5. When finished, click Install and Relaunch to reopen the LastPass Safari extension app.

Uninstall the Safari app extension

  1. Quit Safari.
  2. Quit the LastPass Safari app extension app.
  3. Once both are closed, go to your Applications folder.
  4. Click and drag the LastPass Safari Extension App icon into the Trash.