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

Question

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 workar

Answer 1

Right-click (or control-click) the application in question and choose "Open"

Answer 2

In terminal type the command:

xattr -d com.apple.quarantine [file path here]

Once you click enter it will no longer have that problem. Its annoying that apple adds a quarantine to files automatically. I do not know how to turn this off but there probably is a way...

Answer 3

Right click > Open.

Or, you can go into System Preferences, Security & Privacy, and set the restrictions on opening apps there.