If you receive a message that the item "can't be opened because it was not downloaded from the App Store," follow the steps below.
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1. Go to System Preferences found either on the dock or by searching for "System Preferences" using the Spotlight Search (the magnifying glass in the top right corner of the screen). | |
2. After opening System Preferences, click on Security & Privacy | |
3. Click on Open Anyway and then follow the prompts for installation | |