Version 1.0.02 doesnt open on Mac

after I finish the installation this message appears:
Cannot open LightBurn because apple cant verify the software
This software needs to be updated. Contact the developer for more information.

Chrome downloaded this file on 28 August 2021 from

usually it says that I need to approve the software because it was downloaded from the website, and I go to the settings panel and approve it, but this time it doesn’t appear on the settings panel to approve.

MacOS Installation

  1. Double-click the LightBurn.dmg file to mount the disk image.
  2. Drag the LightBurn application into your applications folder
  3. Eject the LightBurn disk image, or drag it to the trash bin

Please note that at this time, LightBurn for MacOS is not digitally signed. This means that you will need to tell MacOS that you trust us. (Read about this here:

To launch LightBurn for the first time:

  1. Open a Finder window
  2. Browse to the ‘Applications’ folder
  3. Hold the Control key and click the LightBurn icon, or right-click or / two-finger tap the icon
  4. Choose ‘Open’ from the menu
  5. When MacOS asks if it should open the program, say yes, and it will be listed as an exception in your launcher. From now on you can just launch the application normally.
    Installing Lightburn - LightBurn Software Documentation
1 Like

thanks! i was opening from the same shortcut as i always did. Opening from the applications folder made it work :blush:

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@Rick’s solution will work fine with recent versions of MacOS, but not for older versions.
Not sure exactly what version is the trigger, but for my mac running High Sierra I had to open terminal and do it by hand :
sudo spctl --master-disable
sudo chmod -R 777 /Applications/
xattr -d /Applications/
xattr -cr /Applications/
full description is here : 🐛Solution comment réparer application « est endommagé et ne peut pas être ouvert » mac

Not seeing the same here. :slight_smile:

I just ran through this exact process I posted for an internal beta release on a MacBook Pro (Retina, 15-inch, Mid 2015) running High Sierra 10.13.6 (17G14042) and all works as expected.

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