![]() ![]() The Mac will remember that you granted the app permission to launch, so from then on you just double-click it, like you do with the rest of your apps. One cool thing: you only have to do this once per non-authorized app. Note that it is not the default button choice– you have to click the “Open” button. If you know where you got it, and you trust the source, you can click the Open button. This box asks whether you’re sure you want to open it or not. The first box (the one at the top of this blog post) said the app couldn’t be opened. It looks a lot like the one you got when you double-clicked the app, but it’s not the same: Do you want to open this app? ![]() In macOS 10.12 and higher, your choices are “Allow apps downloaded from Mac App Store” and “Allow apps downloaded from Mac App Store and identified developers.” See the screenshot below.Ĭontextual menu for an app that won’t openĬhoose “Open” (the very first item in the menu, at the top) and you get this box. Older Mac systems allowed you to change your Mac’s Security & Privacy settings to allow any app to run, but that options been removed. Gatekeeper’s protection, unfortunately, can also block good apps– apps that were written by someone who didn’t belong to Apple’s Developer Program when the app was written, or apps that were written before these requirements were put in place. Apps that don’t meet the requirement will not launch, at least not without a little bit of work (which is what this article is about). Gatekeeper requires apps to either be from the Mac App Store (a place that Apple controls) or from a developer who is registered with Apple. This app can’t be opened because it is from an unidentified developer.Īpple has a security feature called “Gatekeeper” which protects your Mac from malicious apps. ![]() You get a dialog box that says the app can’t be opened because it’s from “an unidentified developer” and your security settings won’t allow it. Sometimes you download a Mac app and it won’t open. ![]()
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