“Apple has been warning developers for some time that 32-bit apps would be deprecated on macOS, as they have already been on iOS. macOS High Sierra is now displaying a warning whenever you launch a 32-bit app, informing you that the app is ‘not optimized for your Mac,'” Kirk McElhearn writes for Kirkville.

“If you click OK, the app will launch, and if you click Learn More, you’ll be taken to an Apple technical document explaining this change,” McElhearn writes. “You can continue to use these 32-bit apps… [but] it’s a good time to check if the apps you depend on have updates available.”

McElhearn writes, “There’s an easy way to find all the apps on your Mac that are 32-bit.”

Read more in the full article here.

MacDailyNews Take: Hopefully, if you’ve got any older 32-bit apps upon which you depend, there’s already a 64-bit version available or in development!

Mac users will start getting 32-bit app warnings today – April 12, 2018
Apple: High Sierra will be last macOS release to support 32-bit apps ‘without compromise’ – June 29, 2017