Symptom(s): You installed an application in Mac OSX, but unable to launch or open it. This message appears when you do:
Some Mac users say that they can't download programs from other website except Mac App Store, or they may can't be opened the download file. When they click on the download file, it says 'xxx can't be opened because it is from an unidentified developer'.For example.
Unidentified Developer Mac
“NameOfApp.app” can’t be opened because it is from an unidentified developer.
Your security preference allow installation of only apps from the Mac App Store and identified developers.
An example of this type of message is when opening the Tor Browser app
Resolution(s): By default Mac OSX does not allow unidentified developer applications to be opened because they may pose a security risk since they have not been verified officially.
To bypass this and execute the application:
1. Search for the application in finder
2. Hold down the “control” key and click on the application and select open
3. The application will launch and give the option to click open
Unidentified Developer Mac Fix
4. To proceed, simply click open
Warning: We do not take any responsibility for what happens to your computer or the activities involved for proceeding with this tutorial