Message: "Norton Security cannot be opened because of a problem" on Mac

To fix this problem, uninstall Norton and run RemoveSymantecMacFiles utility to remove all remnants. After removing Norton, download and install Norton.


Uninstall Norton Security

  1. In the Applications folder, double-click Norton Security.

  2. On the menu bar, next to the Apple icon, click Norton Security, and select Uninstall Norton Security.

    You need to be in the Norton Security application window to get the menu options.

  3. In the Uninstall Norton Security confirmation window, click Uninstall.

  4. Type your Administrator account name and password, and click Install Helper.

  5. In the uninstaller window, click Restart Now.

If you have an older version of Norton for Mac, read the following section to uninstall it.

After you uninstall your Norton product, run RemoveSymantecMacFiles utility to clean all the remnants.


Run RemoveSymantecMacFiles utility

  1. Download the file.

  2. Double-click the file that you downloaded.

    The file is expanded.

  3. Open the RemoveSymantecMacFiles folder.

  4. Double-click the RemoveSymantecMacFiles.command file.

  5. Type your Mac OS X administrator password, and then press return.

    When you type your password, no characters appear.

  6. Do one of the following:

    • To remove all Symantec files and folders, type 1

    • To quit RemoveSymantecMacFiles without removing any files, type 2

  7. Press return.

    RemoveSymantecMacFiles removes all of the Symantec files.

  8. On the Terminal menu, click Quit Terminal.

  9. Exit all programs and restart your computer.


Install Norton Security

  1. Sign In to Norton.

  2. If you are not signed in to Norton already, you are prompted to sign in. Type in your email address and password for Norton, and click Sign In.

    If you do not have a Norton account, click Create account and complete the sign-up process.

  3. In the Install on this device window, make sure the product name that is displayed is the one you want to install, click Agree & Download.

  4. Click OK to save and open the file.

  5. When the download finishes, double-click the Norton Security Installer.

  6. Click Agree & Install to start the installation.

  7. Follow the on-screen instructions to complete the installation.

  8. When LiveUpdate finishes installing updates, click Continue.

  9. In the Installation Successful window, click Restart.

    You must restart your computer to complete the installation process.

Thank you!

Thank you for using Norton Support.

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DOCID: v102526177_EndUserProfile_en_us
Operating System: Mac OS X
Last modified: 03/20/2018