Macs running unsupported macOS versions are out of compliance and considered an unacceptable security risk.
Recommended macOS Version
- macOS 27
Supported macOS Versions
- macOS 26
- macOS 15 (support ending Fall 2027)
Supported Mobile Operating Systems
- iOS 27
- iPadOS 27
Apple Compatibility
macOS
- macOS 15 Compatibility: https://support.apple.com/en-us/120282
- macOS 26 Compatibility: https://support.apple.com/en-us/122867
- macOS 27 Compatibility: https://support.apple.com/en-us/127255
iOS
iOS 27 Compatible Devices: https://support.apple.com/guide/iphone/iphone-models-compatible-with-ios-27-iphe3fa5df43/ios
iPadOS
iPadOS 27 Compatible Devices: https://support.apple.com/guide/ipad/ipad-models-compatible-with-ipados-27-ipad213a25b2/ipados
Installing the Latest macOS
Use Software Update to download and install macOS. It’s faster, easier, and uses less storage space than other installation methods, and it shows only software that is compatible with your Mac. You can use Spotlight in the menu bar to search for “Software Update,” then open it from the search results.