Apple Warns macOS Users to Move Away From 32-Bit Applications

Todd Singleton
April 14, 2018

That will start to change beginning on today.

In June, Apple will require all Mac App Store apps to support 64-bit.

"Starting with macOS High Sierra 10.13.4, apps that have not been updated to use 64-bit processes produce a one-time alert when opened".

The alerts are part of the macOS 10.13.4 update.

Apple says 32-bit apps will continue to work on your Mac for now, and that they have "no adverse effects on your data or your computer". Otherwise, they will be left in the Mac app graveyard as newer versions of macOS potentially kill off support entirely.

Apple has released a support document to address these concerns and users can check for 64-bit compatibility of apps through the system report failure. There could be one on the developer's website, or in Apple's App Store.

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When Apple announces its plan to switch completely to 64-bit apps, all the legacy support for 32-bit apps will cease and apps that do not update their architecture will stop working altogether. Expect Apple to reveal more details about the next version of macOS during this June's Worldwide Developers Conference. Under "Software" in the sidebar, look for "Applications", then sort the list by "64-bit (Intel)". You'll see your processor name in the Hardware Overview.

In the Software section, click on Applications.

Those are all the steps you can take right now, but we'll be sure to update this page with any new information as and when it becomes available. In the "Overview" tab, click on "System Report". If this listing says Yes, then the app is a 64-bit app. 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. For the next four years after the A7 chip, the company encouraged developers to move to 64-bit. It will also support universal apps or apps that will work across Mac and iOS devices, according to MacRumors.

This app needs to be updated by its developer to improve compatibility.

That's the warning that pops up on your Apple Watch when you try to run an older app made for watchOS 1. In this case the company's desktop operating system has been around a lot longer than iOS and users get desktop apps from non-Apple channels.

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