Macos High Sierra 10.13.1 May 2026

macOS High Sierra (10.13)

In the quiet autumn of 2017, Apple’s macOS team was nursing a new kind of hangover. Just six weeks earlier, they had released — a version whose name promised peaks of stability but whose initial release felt more like a treacherous scree slope.

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occasionally appeared as unavailable during Apple Pay transactions, improving the reliability of digital payments on compatible Mac models. Critical Security and the "Root" Vulnerability macOS High Sierra (10

macOS High Sierra 10.13.1 supported a wide range of Macs, including: macos high sierra 10.13.1