Application Quit Unexpectedly on Mac. How to add a digital signature and solve the problem

Mac users are accustomed to the fact that to start using an application, you just need to download it from the Internet, then mount the image and extract the application file from it, placing it on the drive of an electronic device. In this case, a program or game can be launched from anywhere, that is, keeping it in the Applications folder is not at all necessary, contrary to the opinion of some people. With the release of new versions of operating systems, Apple is constantly strengthening the security system and introducing other innovations, in connection with which applications that have not been updated for a long time may begin to refuse to launch. One of the most common problems is a crash immediately after launch.

If an application is launched, it may open for a split second, but then “Application error message” appears immediately. The issue is called Unexpected Application Quitting and will prevent you from using an application or game on your Mac. Especially often, Apple technology users who use macOS Catalina and macOS Big Sur operating systems complain about such an error, since they are the most sophisticated in terms of security. An error of this kind usually occurs due to the fact that this or that application does not meet the current security requirements of Apple, therefore, its launch is blocked.

Application Quit Unexpectedly on Mac.  How to add a digital signature and solve the problem

Software developers can directly solve this problem by updating their application to a new version. Nevertheless, sometimes this is impossible, because certain programs may not be updated for years, since their creators have completely forgotten about such programs. The macOS tools let you fix the nasty “Unexpected Application Quit” problem on your own on your own with just a few simple steps. First, you need to launch the Terminal application, and then enter the command “xcode-select —install“, And you should not, of course, use quotation marks.

Application Quit Unexpectedly on Mac.  How to add a digital signature and solve the problem

To start the Xcode installation procedure, you need to press the Enter key, and then wait for the installation of this software on your computer. As soon as the installation is completed, and it can take about 15-30 minutes, it becomes possible to add a digital signature of a modern design to any application. It is necessary to sign a broken application using the “Terminal” command line using the command: “sudo codesign —force —deep —sign — /Applications/NewApp.app“. In this particular case, an application called “NewApp” is signed in the “Applications” folder. Similarly, you can specify any other program or game in the .app format to update its digital signature to the latest version.

Application Quit Unexpectedly on Mac.  How to add a digital signature and solve the problem

To confirm acting, you will also need to press the Enter button and enter the password for the administrator account. After the performed operation, with a high degree of probability, the application on the Mac that previously crashed immediately after launch will stop crashing, starting to work fully. In a similar way, you can solve this problem on any Apple computers running macOS Mojave, macOS Catalina and macOS Big Sur, whose users complain about a similar problem when launching some applications and games.

Earlier, the resource ABZax.com wrote about the error “The application cannot be opened because it was downloaded from outside the App Store.” How to fix the problem on any Mac.

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