Resolving “Command CodeSign Failed with a Nonzero Exit Code” in Xcode 10

28 February 2025 Stephan Petzl Leave a comment Xcode

Developers working with Xcode 10 may encounter the error message “Command CodeSign failed with a nonzero exit code” during the build process. This issue can arise due to various reasons, and resolving it requires a systematic approach. Below, we outline effective solutions to tackle this error, based on practical experiences shared by the developer community.

Solution Overview

One of the common causes of this error is related to the code signing process, which is a security measure ensuring the integrity and authenticity of your application. Here are some steps that have proven effective:

  1. Keychain Access Fix:
    • Open Keychain Access on your Mac.
    • Lock the ‘login’ keychain and then unlock it by entering your macOS account password.
    • Clean your project in Xcode by navigating to Product > Clean.
    • Attempt to build your project again.
  2. Extended Attributes Removal:
    • Open Terminal and navigate to the root of your source files using the cd command.
    • Remove all extended file attributes by executing: xattr -cr .
    • Rebuild the project in Xcode.
  3. Resource Folder Naming:
    • If you have a folder named “resources” in your project, try renaming it to avoid conflicts.

Understanding the Cause

This error occurs due to Apple’s security hardening changes, where code signing does not permit files in the app bundle to have extended attributes, such as resource forks or Finder info. Ensuring that your files do not carry these attributes is crucial in preventing this error.

Further Assistance and Automation

For developers seeking to streamline their testing processes, tools like Repeato can be invaluable. Repeato offers a no-code test automation solution for iOS, Android, and web applications, enabling you to create, run, and maintain automated tests efficiently. Using AI and computer vision, Repeato allows for fast test recording and execution, and supports complex automation tasks with command line or JavaScript code.

By leveraging Repeato, you can focus on resolving code signing issues while ensuring your application is thoroughly tested across different scenarios. For more details on how Repeato can enhance your testing workflow, visit our documentation page.

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