When i install a Mac application from downloaded dmg file directly ( that means i do not install it from Mac app store ), below error window popup. The error message is “iZipFast” can’s be opened because it is from an unidentified developer. This means that i can not install it directly, but after some investigation, i finally find the method to resolve it.
1. Change Security Preferences To Allow Install Application From Unidentified Developer.
Follow below steps to change the security preferences.
- Click Mac Logo —> System Preferences menu item to open the System Preferences popup window.
- Click Security & Privacy icon in System Preferences window.
- Click the little lock at the bottom left corner of the Security & Privacy window to make changes. Input correct user name and password. Then you can see that there is a message at the window bottom that said your app has been blocked because it is not from an identified developer, just click the Open Anyway button to install it.
