How to See Which 32-Bit Apps May Stop Working on Your Mac Soon

Ben Stegner 26-04-2018

Processors, operating systems, and programs can all be 32-bit or 64-bit What's the Difference Between 32-Bit and 64-Bit Windows? What's the difference between 32-bit and 64-bit Windows? Here's a simple explanation and how to check which version you have. Read More . While 32-bit was once the standard, 64-bit has taken over as technology has progressed.


macOS has been exclusively 64-bit since Mac OS X Lion released in 2011, but Macs are still compatible with older 32-bit software. However, that’s set to change soon.

32-Bit App Support on Mac Will End

Some Mac users have started seeing a vague warning when launching 32-bit apps that the apps “need to be updated by [the] developer to improve compatibility”. And an official Apple support document states that “macOS High Sierra [will] be the last version of macOS to run 32-bit apps without compromise.”

It’s not clear what this “compromise” is (likely some kind of compatibility mode). However, Apple has encouraged users to find 64-bit apps or contact developers of 32-bit apps to encourage them to update.

For now, you can get some key info about your Mac 9 Essential Details You Must Know About Your Mac As a Mac user, you must know certain details about your computer in case you need to troubleshoot. Here are several key Mac details you should check right now. Read More and see which apps are 32-bit so you know which ones may run into issues in the future.


Checking Which 32-Bit Apps May Stop Working Soon

Mac 32-bit apps

  1. Click the Apple logo in the upper-left corner of your Mac, and select About This Mac.
  2. Select the System Report button.
  3. In the resulting System Information window, scroll the left sidebar down to the Software category. Expand it using the triangle button if necessary.
  4. Select Applications under the Software listing. It may take a few seconds to load.
  5. Click the header labeled 64-Bit (Intel) to sort your apps by 64-bit status. Sort so the apps showing as No appear first.
  6. Each app that has a No in this field is a 32-bit app.

You’ll likely see several default Apple apps A Complete Guide to Default Mac Apps and What They Do Here's a complete guide to Mac default apps so you know what's on your system and which apps are worth using. Read More here, including the built-in DVD player and InkServer. If you see any non-Apple apps, it’s probably worth reaching out to their developers to see if they have plans to upgrade to 64-bit.

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  1. world full of
    April 27, 2018 at 12:28 am

    None of this matters to those of us who do not feel compelled to compulsively update our computers to the latest OS just because its released. My MacBook is working just fine with 10.10 installed, my iMac is happy running 10.11. My Windows box is still on Win7. Updating almost always causes two problems for every one it fixes, usually by making me buy an upgrade to software or hardware that is running just fine on the existing version.

    • Ben Stegner
      April 27, 2018 at 1:14 am

      While this won't affect older versions of macOS (directly), running an outdated operating system comes with its own set of issues. OS X Yosemite is already out of support, so not receiving security patches is a lot bigger of an issue than a handful of 32-bit apps not working, I imagine.

      I agree that you certainly don't need to update to the latest OS version immediately, but running an operating system that's almost four years old when the newest one is available for free seems a bit unwise.