Macos High Sierra 10.13 (17a365) May 2026

: Optimized storage by using up to 35% less disk space and introduced "Top Hits" in search results to surface the most relevant emails. Technical Specifications

The most significant change in 10.13 was the introduction of the as the default for Macs with all-flash storage. macOS High Sierra 10.13 (17A365)

The technical requirements for 10.13 remained consistent with macOS Sierra. : Optimized storage by using up to 35%

Technical Overview: macOS High Sierra 10.13 (Build 17A365) macOS High Sierra version 10.13 (Build 17A365) was officially released on September 25, 2017. Positioned as a refinement of the preceding macOS Sierra, it focused heavily on "under-the-hood" performance improvements and architectural updates rather than aesthetic overhauls. System Core & Architecture macOS High Sierra 10.13 (17A365)