Unidentified developer Error in Mojave

Unidentified developer Error in Mojave

  25 Oct 2018

Mac OS X including Mojave defaults to preventing applications from unidentified developers or sources from being launched. You’ll discover the message in OS X when you try to launch a Mac app that didn’t come from a verified source or from the Mac App Store, and you’ll get an alert dialog that says “[App name] can’t be opened because it is from an unidentified developer”.

Last login: Sun Oct 21 09:19:09 on ttys000

KasiMacAir:~ kasino$ sudo spctl --master-disable

Password:

KasiMacAir:~ kasino$

Unidentified developer Error in Mojave

This is probably the best option for most users, since it maintains some security:

  1. Right-click (or control-click) the application in question and choose “Open”
  2. Click the “Open” button at the next dialog warning to launch the app anyway

You can do this with any third party app that gives you this warning dialog and open it anyway.

If you get tired of constantly right-clicking apps to open them, return to pre-Mountain Lion levels of app security by turning off Gatekeepers app verification completely.

Disable GateKeeper’s Unidentified App Developer Prevention Completely

This is generally best for advanced users who know what apps to trust and not to trust:

  1. Launch System Preferences from the Apple  menu
  2. Choose “Security & Privacy” and then click the “General” tab, followed by clicking the lock icon in the corner to unlock the settings
  3. Look for “Allow applications downloaded from:” and choose “Anywhere”
  4. Accept the security warning and allow
  5. You can now launch any app from any location or developer