(FYI: macOS High Sierra [10.13.x])
I was having trouble opening an HTML page with Sublime. And I had to use administrative privileges in order to open it through System Preferences, having received the following message:
“index.html” was blocked from opening because it is not from an identified developer.
After looking around, I learned that there is an override for that from the CLI:
sudo spctl --master-disable
… And voila, the option to allow from anywhere is both available and enabled:
So, enjoy running with scissors! 😉