As a result, SCS Computing Facilities (SCSCF) is phasing out software support for all computers running macOS 10.13 High Sierra and will end support on January 31, 2021. In keeping with Apple's release cycle, we anticipate macOS 10.13 High Sierra will no longer receive security updates starting in January 2021. On November 12, 2020, Apple released macOS 11, Big Sur.
MacOS 10.13 High Sierra - End of Life Support Ending JanuUpdated 11/18/20