Uploaded January 2019 | Updated September 2026, 2 weeks ago

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How to start an app on macOS (Mac OS X) if the computer won't let you? This video shows and explains how to QUICKLY and EASILY get back control and run the app. The error and warning messages you might see on the way to this solution:
Your Security preferences allow installation of only apps from the App Store.
or
Your Security preferences allow installation of only apps from the App Store and identified developers.
App was blocked from opening because it is not from an identified developer.
App is from an unidentified developer. Are you sure you want to open it?
Opening App will always allow it to run on this Mac. and of course:
App can't be opened because it is from an unidentified developer.
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Music "Air" under Creative Commons Attribution 4.0 license by Alexandr Zhelanov
opengameart.org/users/alexandr-zhelanov
soundcloud.com/alexandr-zhelanov