Apple has begun notifying macOS users of coming 32-bit app incompatibility

High Sierra is the latest version of macOS to fully support 32-bit apps

High Sierra is the latest version of macOS to fully support 32-bit apps

Apple has begun notifying macOS users that 32-bit applications will not work on future versions of the operating system. Apple included a similar alert dialogue on 32-bit iOS apps with iOS 10.3 before requiring 64-bit support to launch on iOS 11 a year ago.

High Sierra (10.13), the current version of macOS, will be the last version to support 32-bit apps "without compromise". "The developer of this app needs to update it to improve its compatibility." . On the other hand, pressing OK will close the alert box and launch the app normally because the current macOS version still has support for 32-bit apps. Apple reaffirms that "final transition dates have not yet been established" but encourages users to check for 32-bit apps before support is cut off in the future.

Users on macOS High Sierra 10.13.4 will see a one-time warning when they open apps that run on 32-bit technology.

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Once this transition is completed, MacOS will join iOS which is already pure 64-bit.

"The technologies that define today's Mac experience - such as Metal graphics acceleration - work only with 64-bit apps".

If you've got the latest version of popular audio recording tool Audacity, the alert will state that, "Audacity is not optimized for your Mac".

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Apple's support document also includes a new "frequently asked questions" section that addresses concerns like potential data loss and 32-bit app support on macOS High Sierra, according to the website 9to5 Mac.

Below you will find more information about the alert and what the 64-bit transition means for you. From the system report, scroll down to Software, then select Applications. For business users, the Blue Jeans and Cisco WebEx teleconferencing clients are still only available as 32-bit apps. Finally in iOS 11 it dropped support for 32-bit apps.

Nevertheless, one thing is sure, that Apple is serious about phasing out the 32-bit apps soon. The personal computer came with 64-bit PowerPC processors. At the same time, it'll be easier for Apple to maintain the apps. Still, users can already check which apps they're running on their Macs need to be updated before the transition happens.

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If you're using an old Apple Watch app that hasn't been updated in a while, you might run into some problems when watchOS 5 lands (likely sometime this autumn). Second, desktop apps are downloaded from several other sources apart from the MacOS App Store.

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