4 and later. Apple has been working with developers to transition their apps, and in 2018 Apple informed them that macOS Mojave would be the last version of macOS to run 32-bit apps. … Starting with macOS Catalina, 32-bit apps are no longer compatible with macOS.

Does my Mac support 32-bit applications?

MacOS 10.14 Mojave, the version of the Mac operating system before the new macOS Catalina, is the last version that supports 32-bit software. With Catalina, only 64-bit software will be supported. … You need to make sure your apps are 64-bit versions. If your app is a 32-bit version, it will not work.

Does High Sierra support 32bit?

High Sierra is the last version to support 32-bit apps “without compromises.” Apple shifted to 64-bit capable Intel processors in 2006 for most of the product line, with the sole holdout, the Mac mini that launched with a 32-bit processor, migrating in 2007.