Turn off open application warning in OS X

Disable annoying open application warning on your Mac

Here's how you can disable the annoying "Are you sure you want to open this application?" warning in OS X on your Mac.

1. Open a terminal window.

2. Type in the following command then hit Enter.

defaults write com.apple.LaunchServices LSQuarantine -bool false

For more, see the original article at the link below.

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How to Remove Annoying “Pop Up” Warnings & More in Lion | Amsys

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