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Apple Warns Mac Users It Is Phasing out 32-Bit App Support

Thursday Apr 12th 2018 by Developer.com Staff

The company is putting pressure on developers to upgrade their apps.

Starting at midnight tonight, Apple will begin warning macOS users that their systems will not support 32-bit apps for much longer. The first time users launch a 32-bit app, they will see a warning that says, "This app needs to be updated by its developer to improve compatibility." A link on the warning will take users to a page that explains Apple plans to require all macOS software to use 64-bit application architecture. It adds, "Apple began the transition to 64-bit hardware and software technology for Mac over a decade ago and is working with developers to transition their apps to 64-bit. At our Worldwide Developers Conference in 2017, Apple informed developers that macOS High Sierra would be the last version of macOS to run 32-bit apps without compromise."

Apple hasn't said exactly when it will end 32-bit support, but it has stopped accepting 32-bit apps in the Mac App Store. It could announce more details at its 2018 Worldwide Developer Conference (WWDC) in June.

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