Macos High Sierra 10.13.1 May 2026

As of late 2025, macOS has progressed through Catalina, Big Sur, Monterey, Ventura, Sonoma, and Sequoia. So why would anyone still run macOS High Sierra 10.13.1?

A subtle but welcome change: the Setup Assistant was updated to properly clean up temporary files after migrating data from Time Machine or another Mac. In 10.13.0, some users experienced leftover “.cleaned” folders consuming gigabytes of hidden storage. macos high sierra 10.13.1

The primary purpose of 10.13.1 was to patch significant security vulnerabilities. As of late 2025, macOS has progressed through

The most visible change in 10.13.1 was the introduction of over 70 new emoji characters. Following Apple’s tradition of using point updates to refresh the character viewer, this release added: Verdict: If you are still on 10

While superficial, this update signaled Apple’s commitment to keeping the OS culturally current without waiting for a full .2 or .3 release.

One of the biggest complaints about the initial High Sierra release was inconsistent performance on older hardware—specifically 2012–2014 MacBook Airs and non-Retina MacBook Pros. We ran controlled tests on a 2013 MacBook Pro (8GB RAM, 256GB SSD) to compare 10.13.0 vs. 10.13.1.

Verdict: If you are still on 10.13.0, updating to 10.13.1 is a noticeable upgrade in responsiveness—especially on spinning hard drives (though Apple discouraged HDDs for this OS).