Improved reliability for MacBooks utilizing the Touch ID sensor for wake-from-sleep authentication. Critical Security Fixes
macOS High Sierra 10.13.1 was not a groundbreaking overhaul, but it was a mandatory safety net. By patching the critical KRACK Wi-Fi flaw and stabilizing the newly introduced APFS architecture, it transformed High Sierra into a reliable daily driver. For vintage Mac enthusiasts, it remains a vital stepping stone in keeping classic Apple hardware functional and secure. If you need help with this specific version, tell me: What are you trying to update? Are you encountering a specific error message ? Do you need assistance creating a bootable USB installer ?
First, the obvious: Apple patched the Login Window vulnerability (CVE-2017-13872). They also fixed a bug where would sometimes fail to sync passwords across iCloud devices — a silent frustration for anyone who’d recently bought an iPhone X. macos high sierra 10.13.1
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.
Fixed an issue where the search interface occasionally refused keyboard input. Improved reliability for MacBooks utilizing the Touch ID
Enhanced the speed of directory sizing and file copying.
External USB 3.0 drives would sometimes unmount improperly after the Mac went into deep sleep. This persisted from 10.13.0 and was only partially mitigated in 10.13.1. Users were advised to disable "Put hard disks to sleep when possible" in Energy Saver preferences. For vintage Mac enthusiasts, it remains a vital
By late October, the build number was seeded to developers. The release notes were terse, almost shy: “Improves the security and stability of macOS High Sierra.” But inside the 1.2 GB update, a quiet war was being fought.
Beyond the fun additions, 10.13.1 was a "must-install" update due to several high-priority security and reliability improvements:
Locate the and click Update .
For security researchers, 10.13.1 was a gold standard example of how to balance feature delivery with urgent patching. Apple’s security document for this update was one of the densest of the High Sierra lifecycle.