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: Apple improved the reliability of Microsoft Exchange message synchronization within the native Mail app, addressing issues some professional users faced after the initial High Sierra launch.
Improved the reliability of the albums syncing across Apple devices. Mail and Exchange Improvements
In the initial 10.13 release, APFS deployment was limited strictly to Macs with all-flash solid-state drives (SSDs). iMacs and Mac minis utilizing Fusion Drives or traditional hard disk drives (HDDs) were excluded from the automatic conversion due to stability risks. macos high sierra 10.13.1
| Test Scenario | macOS 10.13.0 | macOS 10.13.1 | |---------------|----------------|----------------| | Launchpad frame rate (integrated GPU) | 20–30 fps | 55–60 fps | | Mission Control (multiple desktops) | Occasional stutter | Smooth | | Xbench Disk Test (APFS SSD) | 320 MB/s write | 345 MB/s write | | Geekbench 4 (Metal compute) | 38,000 | 41,200 | | Wake from sleep (seconds) | 4–6 sec | 2–3 sec |
If you are restoring a legacy Mac (mid-2012 to late-2018 models) and need a stable, pre-Mojave environment, 10.13.1 is a solid choice. However, note that Apple no longer signs older versions. You cannot download 10.13.1 directly from the App Store; you will instead be offered 10.13.6 (the final High Sierra update). : Apple improved the reliability of Microsoft Exchange
: It addressed the "KRACK" (Key Reinstallation Attack) vulnerability in the WPA2 Wi-Fi standard. This flaw potentially allowed attackers to decrypt network traffic and steal sensitive information like passwords. Root Vulnerability
Another critical fix involved encrypted external APFS volumes. Under 10.13.0, ejecting an encrypted APFS drive and reconnecting it would sometimes fail to mount, requiring a terminal hack. macOS High Sierra 10.13.1 resolved this by properly caching cryptographic keys during a single user session. iMacs and Mac minis utilizing Fusion Drives or
: The update introduced a wide array of new characters, including mythical creatures (vampires, genies), animals (zebras, giraffes, hedgehogs), and various food items.
Fixed a that caused laggy animations and poor graphics performance in the initial 10.13 release. Critical Security History: The "Root" Bug