Navigating macOS Security: Why Your Mac Blocks Certain Files and How to Safely Open Them

At least once, many Mac users have encountered a scenario where a downloaded file refuses to open. Instead of the expected document appearing on the screen or the program launching, a message pops up that the file could not be verified and has been blocked for security reasons or because it comes from an unknown developer.
For anyone who’s switching to macOS from Windows, this behavior might seem overly strict. But there’s a well-thought-out security system behind these restrictions.