App can't be opened because it is from an unidentified developer

Chandan picture Chandan · Oct 23, 2013 · Viewed 224.4k times · Source

I installed Mac OS X Mavericks (10.9) yesterday and since then I am not able to start my Eclipse. I am attaching a screenshot of the message I see.

Is there a workaround for this?

Enter image description here

I found a solution in Fix the “App can’t be opened because it is from an unidentified developer” Error in Mac OS X.

Answer

trojanfoe picture trojanfoe · Oct 23, 2013

It's because of the Security options.

Go to System Preferences... > Security & Privacy and there should be a button saying Open Anyway, under the General tab.

You can avoid doing this by changing the options under Allow apps downloaded from:, however I would recommend keeping it at the default Mac App Store and identified developers.