32 Bit App On 64 Bit Mac

07.09.2020by

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Apple began transitioning to 64-bit hardware and software technology for Mac over a decade ago, and all modern Macs now include powerful 64-bit processors that can run advanced 64-bit apps. These apps can access dramatically more memory, enable faster system performance, and take advantage of technologies that define today's Mac experience, such as Metal graphics acceleration.

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.

The 64-bit Office apps' predecessors, the Word and friends bundled as Office for Mac 2011, will likely be among the most prominent 32-bit standouts in the System Report list.

  • Apr 12, 2018  Apple is making the transition in order to make the Mac environment fully 64-bit support. The 32-bit apps will be disabled by the company for Mac OS 10.13.4 in the coming time. This means the app supporting the 32-bit instead of 64-bit won't be able.
  • Apr 13, 2018  We’ll learn more about the next version of macOS and 64-bit transition process at WWDC 2018 – the 32-bit app phase out was actually first announced at last year’s WWDC – and Apple’s next.

Apple's transition to 64-bit technology is now complete. Starting with macOS Catalina, 32-bit apps are no longer compatible with macOS. If you have a 32-bit app, please check with the app developer for a 64-bit version.

Opening 32-bit apps

When you attempt to open a 32-bit app, you will see an alert that the app needs to be updated to work with this version of macOS, or that the app is not optimized for your Mac and needs to be updated.


macOS Catalina


macOS Mojave and macOS High Sierra

If you haven't upgraded to macOS Catalina, you can still open and use the app, but you should check with the app developer for a 64-bit version that also works with the latest macOS.

How to find 32-bit apps on your Mac

System Information can find 32-bit apps that are installed on your Mac:

  1. Choose Apple menu  > About This Mac, then click the System Report button.
  2. Select Legacy Software in the sidebar. All legacy software is 32-bit.
  3. If you don't see Legacy Software in the sidebar, select Applications in the sidebar, then check the list of apps on the right. The column labeled ”64-Bit (Intel)” shows ”No” for apps that are 32-bit.

When upgrading to macOS Catalina, the installer shows a list of recently used apps that are 32-bit. You can review this list before choosing whether to cancel or continue the installation:

32 Bit Program On 64 Bit Machine

macOS Catalina also shows a prohibitory symbol over the icon of each 32-bit app in the Finder, letting you know that the app will not open.

How to contact the app developer

The developer (or vendor) is the person or company that made the app. The easiest way to find contact information for an app's developer is to search the web for their name or the name of their app. Learn more about contacting third-party vendors.

To find the name of the developer:

  1. Select the app in the Finder.
  2. Choose File > Get Info from the menu bar.
  3. Look for copyright information in the Info window. For example, Apple is the developer of this app:


Beginning June 1, 2018, all new app updates submitted to the Mac App Store had to support 64-bit. Apple is expected to phase out support for 32-bit apps in macOS 10.15, which will almost certainly be previewed at the 2019 Worldwide Developer Conference in June. (It’ll kick off on Monday, June 3.)

App

This means that means some older apps that haven’t been updated in awhile will cease to work. Thankfully, it’s easy to tell if an app is 32-bit or 64-bit.

As developers optimize their apps for 64-bit compatibility, Apple is notifying customers when they’re using an app based on 32-bit technology via a one-time alert that appears when you launch a 32-bit app. In macOS Mojave, this alert appears once every 30 days when launching the app.

To check if an app is 32-bit or 64-bit, from the Apple menu, choose About This Mac, then click the System Report button. From the system report, scroll down to Software in the sidebar, then select Applications. When you select an individual application, you will see a field titled 64-bit (Intel). “Yes” indicates 64-bit; “No” indicates 32-bit. If you’re using macOS Mojave (and you should be), select Legacy Software in the sidebar to see all applications that haven’t been updated to use 64-bit processes.

Alternately, you can use the free 32-bit Check application (https://eclecticlight.co/32-bitcheck-archichect/), which lets you save, print, and filter the list. With it, you can check the folders of your choosing, and can check just apps, or all bundles including plugins and other executable code.

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