Find out how to change the settings below so you can install downloaded apps from trusted third-party websites. When the menu pops up, click on System Preferences. Choose the General tab to see the settings below. Click it to enable all the settings in the box. Click OK and the grayed out settings become clickable.
The settings we need to work with show up at the bottom half of the dialog box. There are three options under Allow apps downloaded from:. If the user chooses the first two options, they can close the dialog box and continue. However, if the user chooses Anywhere, the above warning pops up to scare the user from using this setting. Please use caution if you choose to install any software for which your Mac displays an alert. By default, the security and privacy preferences of your Mac are set to allow apps from the App Store and identified developers.
For additional security, you can chose to allow only apps from the App Store. Click the lock and enter your password to make changes. An app that has been notarized by Apple indicates that Apple checked it for malicious software and none was detected. If you have set your Mac to allow apps only from the App Store and you try to install an app from elsewhere, your Mac will say that the app can't be opened because it was not downloaded from the App Store. If you see this warning, it means that the app was not notarized, and Apple could not scan the app for known malicious software.
You may want to look for an updated version of the app in the App Store or look for an alternative app. If macOS detects that software has malicious content or its authorization has been revoked for any reason, your Mac will notify you that the app will damage your computer. You should move this app to the Trash and check 'Report malware to Apple to protect other users. If you still want to open an app for which the developer cannot be verified, open System Preferences.
Click the Open Anyway button in the General pane to confirm your intent to open or install the app. The warning prompt reappears, and if you're absolutely sure you want to open the app anyway, you can click Open.
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