Security update for macOS High Sierra 10.13.6

Trying to install a security update for macOS High Sierra 10.13.6. Computer reboots for the installation but then the App Store shows that it is still a required update. Is there something else I need to do because it is an older machine?

MacBook Pro 13″, macOS 10.13

Posted on Dec 18, 2020 12:14 PM

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Security update for macOS High Sierra 10.13.6

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