High sierra security updates1/15/2024 The process of upgrading your computer varies depending on which version of macOS is currently installed on your computer and how the computer is managed. Play music at the same time on multiple AirPlay 2. AirPlay 2 for iTunes 12.8: Control your home audio system and AirPlay 2-enabled speakers throughout your house. This update is recommended for all users. If this is the case, you will need to replace your current computer with a newer model. The macOS High Sierra 10.13.6 Update adds AirPlay 2 multiroom audio support for iTunes and improves the stability and security of your Mac. If your computer does not meet the minimum requirements for Big Sur, you will not be able to install a supported version of macOS. We recommend updating your systems drivers and security updates along with. About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. If you are running an older OS, you can look at the hardware requirements for the currently supported versions of macOS to see if your computer is capable of running them: Macs running Thunderbolt 3 & macOS High Sierra 10.13.4 or later. This document describes the security content of macOS Mojave 10.14.1, Security Update 2018-002 High Sierra, Security Update 2018-005 Sierra. If your computer is running macOS 10.15 Catalina or older it will need to be upgraded or replaced – make a note of your installed macOS version and your computer’s model and year as that information will be helpful when upgrading macOS.You’ll see the macOS name and version number (“macOS Catalina version 10.15.5” in the example below, which is too old) as well as your computer model and year.From the Apple menu in the top left corner of your screen, choose About This Mac.All UVM-owned computers running macOS 10.15 Catalina or older must be updated or replaced as soon as possible to comply with the University Information Security Policy.
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