

Click Privacy & Security, scroll down, and click the Open Anyway button to confirm your intent to open or install the app.

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.*
#BLOCK INSTALL MACOS CATALINA SOFTWARE#
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. Before opening downloaded software for the first time, macOS requests your approval to make sure that you aren’t misled into running software that you didn’t expect.By default, macOS Catalina and later also require software to be notarized, so that 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.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.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 make sure that it hasn’t been tampered with or altered. The safest place to get apps for your Mac is the App Store.
