How To Install Programs From Unidentified Developers In Mac OS

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.

macos can not install application from unidentified developers error window

1. Change Security Preferences To Allow Install Application From Unidentified Developer.

Follow below steps to change the security preferences.

  1. Click Mac Logo —> System Preferences menu item to open the System Preferences popup window.
    mac logo system preferences menu item
  2. Click Security & Privacy icon in System Preferences window.
    mysql is installed in macos system preferences
  3. 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.
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