![]() The decision to go pure 64-bit resulted in an all-round more efficient operating system, but disabled 32-bit apps. MacOS Catalina officially ditched support for 32-bit apps when it arrived in the fall of 2019. If you get an error telling you an app “needs to be updated,” you’re likely trying to run outdated, 32-bit software. RELATED: How to Open Apps from "Unidentified Developers" on Your Mac Update Outdated 32-Bit Apps Specific types of apps, like file-sharing clients, aren’t eligible for Apple’s approval in the first place. ![]() If you know where the app comes from and you trust the download source, you shouldn’t be put off just because it’s unsigned. ![]() Similarly, a hobbyist who creates a small, free app might not want to pay for a developer’s account when he or she won’t be making any money from it. Open-source projects, in particular, usually have minuscule budgets, with programmers contributing their time as volunteers. This requires an annual fee, and some developers just can’t afford it. An unsigned application simply means the developer hasn’t registered with Apple. Unsigned apps aren’t inherently dangerous, but the vast majority of security threats come from so-called “unsigned” software. You’ve now indicated to the operating system that you approve of the app in question, and you won’t be hassled about it again. Click “Open Anyway,” and then click “Open” in the popup that appears.
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