Question: is el capitan still supported?
Answer: macOS El Capitan no longer supported by Apple El Capitan was replaced by Sierra 10.12, High Sierra 10.13 and the current release, macOS 10.14 Mojave. As a result SCS Computing Facilities (SCSCF) is phasing out software support for all computers running macOS 10.11 El Capitan and will end support on October 31, 2019.