The most common messages received from users on Appked are reports that the “app” is damaged and can’t be opened. You should move it to the Trash! Like this:
It a simple fix and here is how we fix it:
Open the Terminal app from the /Applications/Utilities/ folder and then enter the following command syntax:
Option I
For a certain application run in Terminal:
sudo xattr -rd com.apple.quarantine /Applications/LockedApp.app
Option II
To disable checks globally run in Terminal:
sudo spctl --master-disable
This will allow you to open and run apps from “Anywhere” outside the Mac App Store.
To re-enable Gatekeeper simply run the following command in the Terminal app
sudo spctl --master-enable