This question already has an answer here:

I'm wondering how to allow non-identified developers' apps since I updated my MacBook Pro to macOS Sierra.

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This option seems to have disappeared.

Can someone help?

marked as duplicate by klanomath, Tetsujin, bmike osx Sep 25 '16 at 18:41

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.


You can right-click on the unidentified app and choose open.

You can completely disable gatekeeper with the command:

sudo spctl --master-disable
  • Thanks Chris for the answer but it doesn't work neither. The solution is here : apple.stackexchange.com/a/245029/190551 – ferdi_ Sep 27 '16 at 22:41
  • The answer you linked to is the same as the answer I gave you. Glad you figured it out though. – Chris A Sep 28 '16 at 12:11
  • Thank you Chris. It works. To the people who will read this, you can also re enable it by typing : sudo spctl --master-enable – ferdi_ Oct 1 '16 at 0:29

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