Question: is os x 10.12 still supported?
Answer: Support Ending November 30, 2019 In keeping with Apple's release cycle, macOS 10.12 Sierra will no longer be receiving security updates. Sierra was replaced by High Sierra 10.13, Mojave 10.14, and the newest Catalina 10.15. Our latest fully-supported operating system if macOS Mojave (10.14).