About macOS Versions

Apple releases a new major version of macOS per year, usually end of summer / early fall. Apple makes no committment for the date until which any given OS version is supported. In general the three most recent releases receive security updates, but we have seen cases where a new major version was released without the corresponding security updates for previous versions.

It is the users reposibility to ensure to always run a supported version of macOS.

We assume that at the time being the following versions of macOS are supported:

• macOS 15 released on September 16th 2024
• macOS 14 released on September 26th 2023
• macOS 13 released on October 24th 2022

If you use a Mac that runs a macOS version older than 13 you should check whether the device can run at least 13 and upgrade as soon as possible. If that device cannot run 13 you should consider replacing it as soon as possible.

To ease the upgrade for the stragglers we have kept some of the documentation of the more recent unsupported versions:

• macOS 12
• macOS 11
• macOS 10.15
• macOS 10.14
• macOS 10.13
• macOS 10.12
• macOS 10.11

Upgrades to the latest macOS version can easily be done via the "Software Update" pane in "System Preferences". Instructions how to upgrade to other versions of macOS can be found on Apple's HT211683.