Enable Gatekeeper

In Apple’s OS X Operating System (now called macOS), there is a security feature called Gatekeeper in the System Preferences area to help keep out rogue programs out of your desktop and laptop system. To change its status from enabled or disabled, you need to execute below in the Terminal (which is PC’s version of the Command Prompt) the following command.

Enable Gatekeeper: sudo spctl --master-enable; spctl --status; exit

Adding ; exit is optional and can be left off if you need to continue use the Terminal.

Once the command is entered, you will need to input your password credentials to authorize the changes. Please be aware that the password will not show for your security. Also, the System Preference windows must be closed when attempting to change the status if you wish to see and verify the changes as it will not refresh while System Preference window is loaded.

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Stephan Pringle

About The Author: Stephan Pringle is an Information Technology Specialist. He covers hardware and software and provides tips for you to troubleshoot and repair issues on your own. In his spare time, he writes articles about the State of New York on his Hackintosh and HackBook and that has helped him to become the top contributor of the New York City section of Yahoo! Answers.