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Dock Error on Sequoia Update

The application “Dock” does not have permission to open “(null)”.


The null in question is LibreWolf and the same idiot response happens when I try to open from the App folder- ie not using 'Dock' at all.


Once again bitten by a bug...

M2 Airbook

Posted on Nov 7, 2024 12:32 PM

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Question marked as Top-ranking reply

Posted on Nov 21, 2024 3:09 PM

Actually, found the actual fix, run this in terminal:


codesign --remove-signature /Applications/LibreWolf.app

codesign --force --deep --sign - /Applications/LibreWolf.app


This removes the signature and forces a self-signature. I found this solution here: https://forums.macrumors.com/threads/finder-does-not-have-permission-to-open-null.2441374/post-33535657

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Question marked as Top-ranking reply

Nov 21, 2024 3:09 PM in response to an0nymouz

Actually, found the actual fix, run this in terminal:


codesign --remove-signature /Applications/LibreWolf.app

codesign --force --deep --sign - /Applications/LibreWolf.app


This removes the signature and forces a self-signature. I found this solution here: https://forums.macrumors.com/threads/finder-does-not-have-permission-to-open-null.2441374/post-33535657

Nov 21, 2024 2:05 PM in response to rhone1

Just ran into the same issue after updating to Sequioa 15.1.1 and I was able to run it by going to Applications > right click on LibreWolf and click "Show Package Content"


Navigate to Contents > MacOS > double click on "librewolf". It runs the application through Terminal and it's working fine. Unfortunately still can't run the application from Dock/Finder directly but I can use the app.

Nov 22, 2024 3:54 PM in response to an0nymouz

Thanks, found that Reddit as well,

did not have any problem with 15.1.1 upgrade.


However the matter became noted at https://librewolf.net/docs/faq/#why-is-librewolf-marked-as-broken

and issue resolved.


Despite 33 years on Macs, I very rarely have used Terminal directly and I should apply this to my prior legacy machine. Something bombed and the message was the same.


Thanks all, issue closed.

Dock Error on Sequoia Update

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