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Go to my.norton.com and click .
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Type in your email address and password for Norton, and click .
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In the My Norton portal, click .
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In the Get Started page, click .
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When the download finishes, double-click the file that you downloaded to launch the Norton installer.
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In the Norton installer window, select , and click to start the installation.
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When you see a prompt for Install Helper tool, type your administrator password and then click .
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If you see a prompt to restart, click .
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After restarting your Mac, in the Norton installation window that appears, click to open System Preferences.
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In the Security & Privacy preferences window, on the General tab, click the lock icon at the bottom, type your administrator password and click .
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Next to System software from application Norton was blocked from loading, click . Exit the System Preferences window.
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In the Norton installation window, click .
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In the Norton Installation window, click to go to the Security & Privacy settings.
To complete the Norton installation on macOS 10.15.x or later, you need to allow Full Disk access to Norton.
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In the Security & Privacy preferences window, on the Privacy tab, click the lock icon at the bottom, type your administrator password and click .
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In the left pane, select , and then check in the right pane. Exit the System Preferences window.
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In the Installation Successful window, click .
You must restart your computer to complete the installation process.
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In the Norton installation window, click , and then click .
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If you see a prompt to activate, type your email address and password to sign in to Norton. From the list of available licenses in your account, select your license and click .
Norton installation is now complete.
, and click 
and click 
in the dock, and then click