You may be surprised by how many 32-bit apps you have. All your 64-bit apps will show a Yes in this column. Find the column headed '64-bit (Intel)' and click on the column heading. Your Mac will take a while to gather information about your apps and then displays a list of all the apps on your machine. The easiest way to do this is to click the Apple icon in the upper left, then About this Mac, then System Report, and scroll down to Software/Applications. Here, we show you how to run 32-bit apps on an OS that isn't designed for them.īefore you update to Catalina, find out whether you're using any 32-bit apps that you can't do without.

Still, for many users, Catalina blocks apps that they've relied on for years. Apple warned us years ago that this change was coming, and there's no doubt that an all-64-bit OS like Catalina is more efficient than an OS that runs both 32-bit and 64-bit code. The biggest change is that Apple ripped out all the code that, in earlier versions, made it possible to run older 32-bit apps in Apple's 64-bit operating system. Best Malware Removal and Protection SoftwareĪpple's latest version of macOS, 10.15 Catalina, looks a lot like earlier versions of the operating system, but is vastly different under the hood.

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