The app is now saved as an exception to your security settings, and you can open it in the future by double-clicking it, just as you can any authorized app.My other half’s MacBook Air 2012 is the earliest MBA to support Mojave natively. The warning prompt reappears and, if you're absolutely sure that you want to open the app anyway, you can click Open. If you’re certain that an app that you want to open is from a trustworthy source and hasn’t been tampered with, you might be able to temporarily override your Mac security settings to open it.*Ĭlick Privacy & Security, scroll down, and click the Open Anyway button to confirm your intent to open or install the app. Running software that hasn’t been signed and notarized might expose your computer and personal information to malware that can harm your Mac or compromise your privacy. If you want to open an app that hasn’t been notarized or is from an unidentified developer You should move this app to the Trash and, if available, check "Report malware to Apple to protect other users." The app might be broken or corrupted, or it might have been tampered with. If macOS detects that software has been modified or damaged, your Mac notifies you that the app can't be opened. If macOS detects that software has malicious content or its authorization has been revoked for any reason, your Mac notifies you that the app will damage your computer. If your Privacy & Security settings allow apps from only the App Store, macOS won't open an app that wasn't downloaded from the App Store.Ĭhange your Privacy & Security Settings to allow apps downloaded from both the App store and identified developersĪlert that the app will damage your computer or the app is damaged If you're certain that the app is from a trustworthy source and hasn't been tampered with, you might be able to temporarily override your Mac security settings to open itĪlert that the app wasn't downloaded from the App Store If the app developer can't be verified and - in macOS Catalina and later - the app hasn't been notarized by Apple, macOS can't verify that the app is free of malware. If you’re certain that the app is from a trustworthy source and hasn’t been tampered with, you might be able to temporarily override your Mac security settings to open itĪlert that the app developer cannot be verified If Apple can't check an app for malicious software:Ĭontact the app developer for more informationĬheck the App Store for an updated version or search for an alternative app. Alert that Apple cannot check the app for malicious software The first time that you open a new app from an identified developer that you downloaded outside the App Store, your Mac asks if you’re sure that you want to open it. Alert that the app was downloaded from the Internet Please use caution if you choose to install any software for which your Mac displays an alert. The warning messages displayed below are examples, and it's possible that you could see a similar message that isn't displayed here. If your Mac displays an alert when you open an app Running software that hasn’t been signed and notarized may expose your computer and personal information to malware that can harm your Mac or compromise your privacy. When you install Mac apps, plug-ins, and installer packages from outside the App Store, macOS checks the Developer ID signature to verify that the software is from an identified developer and that it has not been altered.īy default, macOS Catalina and later also requires software to be notarized, so you can be confident that the software you run on your Mac doesn't contain known malware.An app that has been notarized by Apple indicates that Apple checked it for malicious software and none was detected.īefore opening downloaded software for the first time, macOS requests your approval to make sure you aren’t misled into running software you didn’t expect. If you download and install apps from the internet or directly from a developer, macOS continues to protect your Mac. If there’s ever a problem with an app, Apple can quickly remove it from the store. Apple reviews each app in the App Store before it’s accepted and signs it to ensure that it hasn’t been tampered with or altered. The safest place to get apps for your Mac is the App Store. MacOS includes a technology called Gatekeeper, that's designed to ensure that only trusted software runs on your Mac.
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