Carnegie Mellon University School of Computer Science

macOS 10.13 High Sierra - End of Life

Support Ending November 30, 2020

Apple announced the launch of its new operating system, macOS 10.15 Catalina in October 2019. In keeping with Apple's release cycle, macOS 10.13 High Sierra will no longer be receiving security updates as of November 2020. High Sierra was replaced by 10.14 Mojave, and the latest version,10.15 Catalina.

As a result, we are phasing out software support for all computers running macOS 10.13 High Sierra and will end support on November 30th, 2020.

What do I need to do?

If you have an SCS-supported computer still running macOS 10.13 High Sierra, you have the following options:

Please note: if you choose not to upgrade your computer, it will not receive security patches or functionality updates and our ability to troubleshoot issues will be limited. SCSCF software support charges will be canceled automatically. Additionally, computers identified as security risks may be blocked from the CMU network by the Information Security Office (ISO).

Expect Mojave support to end in 2021

When Apple releases a new version of macOS in late 2020, Mojave will be the third oldest version and will cease to be supported at that time. As a result, SCSCF will stop providing software support for all computers running macOS 10.14 Mojave in late 2021 .

If you would like to upgrade your computer yourself, you can use the Self Service App. Self Service has an installation package available to upgrade from Sierra (and newer) to Mojave. Please see Mojave support details before upgrading.

If you do not see this package available to you, please contact us, as there may be conflicting or incompatible software/hardware conditions on your computer.