Disable Application Downloaded from Internet Warning

To disable the warning, use the xattr delete command:

xattr -d -r com.apple.quarantine /application/path/here

I downloaded Firefox from Chrome and was presented with the “application downloaded from the internet” warning every time I opened Firefox. To get rid of the warning, I ran the following command from the terminal:

sudo xattr -d -r com.apple.quarantine /Applications/Firefox.app

The xattr command manages attributes on files. The -d flag indicates that the com.apple.quarantine attribute should be deleted. The -r flag indicates that the attribute should be removed recursively from all files in the designated directory.

Disable Application Downloaded from Internet Warning
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