Demystify code signing and its importance in app development. Get help troubleshooting code signing issues and ensure your app is properly signed for distribution.

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Copy of notarized & exported app will not run
In XCode I create and export a notarized app for "direct distribution". I then create a tar file of the exported .app to distribute to my users. Until today this worked fine. Now when the users try to run the app it pops up a dialog saying "app is damaged and can't be opened. You should move it to the Trash." It is possible to ctrl-click on the app and force it to run but, I think, whether this works or not will depend on system settings and not all users have root access to modify settings. Even simply copying the .app folder from the command line will cause this error.
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Jun ’25
Command CodeSign failed with a nonzero exit code - OpenGL
Hey, So i am trying to setup OpenGL on my mac. Specs : M2 Pro, 15.5 (24F74) Now i have setup the entire project properly as far as i know. GLFW, GLAD and the OpenGL framework. the build libraries are also reference and everything. I have also included the glad.c file in the folder. i have also kept it to run locally in signing tab. its still giving me Command CodeSign failed with a nonzero exit code All the ss are provided
Topic: Code Signing SubTopic: General
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440
Jul ’25
App Bundle issue
We have an app which is hybrid using React Native and Native features. We released our app recently which showed issues related to missing packages/corrupt package but xCode didn't gave any error and we were able to Archive and submit app successfully.
Topic: Code Signing SubTopic: General
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134
Aug ’25
Is there a tutorial or good resource about publishing a Python based app on Apple Store?
Hi guys, Is there any good up-to-date tutorial about publishing a Python based app on Apple Store? Now, I have developed a standalone Python app from PyCharm, and it's using Pyside6 for UI and some major Python libraries. It's a productivity app with a little A.I. features. I used PyInstaller to prepare the app. Currently, I am stuck at the stage of codesign and Apple Review process, because I am manually doing codesign and building the package from command-line. Without using Xcode, things can get messy or miss easily. It would be nice to follow a up-to-date tutorial about how to complete the codesign and Apple Review process for a Python based app. For example, what to do, how to do, what to be careful during the Apple Review process, etc. Thanks!
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Aug ’25
Code signing fails with “unable to build chain to self-signed root for signer "(null)"” and errSecInternalComponent for Developer ID Application on macOS
Hello Apple Developer Support Community, I am encountering a persistent issue while trying to code sign my macOS application (PromptVault.app) using a valid Developer ID Application certificate. The signing process fails with the following warning and error for every native .so file inside the app bundle: `Warning: unable to build chain to self-signed root for signer "(null)" <file-path>: errSecInternalComponent` What I have tried so far: Verified that my Developer ID Application certificate and the associated private key exist correctly in the login keychain. Confirmed that the intermediate certificate "Apple Worldwide Developer Relations - G6" is installed and valid in the System keychain. Added Terminal to Full Disk Access in Security & Privacy to ensure signing tools have required permissions. Executed security set-key-partition-list to explicitly allow code signing tools to access the private key. Reinstalled both developer and Apple intermediate certificates. Used codesign to individually sign .so files and then sign the entire bundle. Ensured macOS and Xcode Command Line Tools are up to date. Created a clean Python virtual environment and rebuilt all dependencies. Tested code signing in multiple ways and with verbose logging. Current status: Despite all these efforts, the same warning and error persist during the signing process of every .so file. This prevents successful code signing and notarization, blocking distribution. Request for assistance: Could anyone confirm if my certificate and keychain setup sounds correct? Are there known issues or extra steps necessary to properly build the trust chain for Developer ID certificates on macOS 15.6.1 (Sequoia)? Any suggestions for resolving the errSecInternalComponent during signing native libraries? Guidance on ensuring the entire certificates chain is trusted and usable by codesign tools? I can provide debug logs, screenshots of my keychain and security settings, or any other diagnostic information if needed. Thanks in advance for your help!
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4w
codesign Failure with errSecInternalComponent Error
I am experiencing a persistent issue when trying to sign my application, PhotoKiosk.app, using codesign. The process consistently fails with the error errSecInternalComponent, and my troubleshooting indicates the problem is with how the system accesses or validates my certificate's trust chain, rather than the certificate itself. Error Details and Configuration: codesign command executed: codesign --force --verbose --options=runtime --entitlements /Users/sergiomordente/Documents/ProjetosPhotocolor/PhotoKiosk-4M/entitlements.plist --sign "Developer ID Application: Sérgio Mordente (G75SJ6S9NC)" /Users/sergiomordente/Documents/ProjetosPhotocolor/PhotoKiosk-4M/dist/PhotoKiosk.app Error message received: Warning: unable to build chain to self-signed root for signer "(null)" /Users/sergiomordente/Documents/ProjetosPhotocolor/PhotoKiosk-4M/dist/PhotoKiosk.app: errSecInternalComponent Diagnostic Tests and Verifications Performed: Code Signing Identity Validation: I ran the command security find-identity -v -p codesigning, which successfully confirmed the presence and validity of my certificate in the Keychain. The command output correctly lists my identity: D8FB11D4C14FEC9BF17E699E833B23980AF7E64F "Developer ID Application: Sérgio Mordente (G75SJ6S9NC)" This suggests that the certificate and its associated private key are present and functional for the system. Keychain Certificate Verification: The "Apple Root CA - G3 Root" certificate is present in the System Roots keychain. The "Apple Worldwide Developer Relations Certification Authority (G6)" certificate is present and shown as valid. The trust setting for my "Developer ID Application" certificate is set to "Use System Defaults". Attempted Certificate Export via security: To further diagnose the problem, I attempted to export the certificate using the security find-certificate command with the exact name of my identity. Command executed (using double quotes): security find-certificate -c -p "Developer ID Application: Sérgio Mordente (G75SJ6S9NC)" &gt; mycert.pem Error message: security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain. The same error occurred when I tried with single quotes. This result is contradictory to the output of find-identity, which successfully located the certificate. This suggests an internal inconsistency in the Keychain database, where the certificate is recognized as a valid signing identity but cannot be located via a simple certificate search. Additional Troubleshooting Attempts: I have already recreated the "Developer ID Application" certificate 4 times (I am at the limit of 5), and the issue persists with all of them. The application has been rebuilt, and the codesign command was run on a clean binary. Conclusion: The problem appears to be an internal macOS failure to build the trust chain for the certificate, as indicated by the errSecInternalComponent error. Although the certificate is present and recognized as a valid signing identity by find-identity, the codesign tool cannot complete the signature. The failure to find the certificate with find-certificate further supports the suspicion of an inconsistency within the keychain system that goes beyond a simple certificate configuration issue. I would appreciate any guidance on how to resolve this, especially given that I am at my developer certificate limit and cannot simply generate a new one.
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2w
Inquiry Regarding Gatekeeper Behavior During Application Upgrade
Can you please help us with the scenario below, including details and Apple’s recommendations? I've already read through the Notarization and Gatekeeper documentation. The installed version of our application is 1.2.3, located in /Applications/XYZSecurity.app. We created an upgrade package for version 1.2.4. As part of the pre-install script in the 1.2.4 installer, we explicitly deleted some obsolete .dylib files from /Applications/XYZSecurity.app/Contents/Frameworks and some executable files from /Applications/XYZSecurity.app/Contents/MacOS that were no longer needed in version 1.2.4. The installation of version 1.2.4 completed successfully, but we see the below error logs in installer.log: PackageKit: Failed to unlinkat file reference /Applications/XYZSecurity.app/Contents/Frameworks/libhelper.dylib PackageKit: Failed to unlinkat file reference /Applications/XYZSecurity.app/Contents/MacOS/helper-tool Our Key Questions: Is it the right practice to remove obsolete files in the pre-install script during an upgrade? Is this approach recommended by Apple? Can this cause any issues with Apple Gatekeeper? Is there a possibility of my application getting blocked by Gatekeeper as a result?
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295
1w
Developing iOS Applications with Delphi 11: Crashing Issues and Troubleshooting
I am developing a mobile application with Delphi 11. I compiled the application using iOS SDK 17.5. I uploaded it to the Apple Store for testing and first tested it on an iPhone 7 (software version 15.7.1). The application worked smoothly. Later, I tested it on an iPhone 14 (software version 17.6.1) and an iPhone 11 (software version 18). On both of these devices, the application crashed before opening. Since the same application is available on the Apple Store, I downloaded it from there and saw that it worked fine on the last two devices. I thought that the SDK needed to be upgraded for newly compiled and submitted applications. However, in that case, it should have thrown an error when submitting the application to the Apple Store. I updated macOS and Xcode and upgraded to SDK 18. I also set SDK 18 in Delphi. When I compiled with these settings, I again saw that it worked normally on my first device, while the application crashed on the next two devices. Considering it could be an issue with a module in the application, I compiled a blank form by removing all permission requests for testing, but the result did not change. What can I do about this? Do you have any suggestions?
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Sep ’24
27/10000AI翻译 划译 The APP packaged with enterprise certificate has a flashback phenomenon under ios18 system
I found a post that submitted the same issue, but the solution was not made public. I didn't get a reply to my comment at the bottom of the post, so I'm pasting the content of the post here. I am a developer working on iOS apps. I would like to report an issue occurring in iOS 18 beta and iOS 18.1 beta. Our company has two Enterprise accounts, and we are developing two apps: A app / TeamId: ABCDEFG B app / TeamId: HIJKLMN When we distribute these apps, which have different TeamIds, and install them on a device running iOS 18 beta, both apps install successfully, but only one app will run. (Other app crashed immediately after being launched.) This issue does not occur on versions prior to iOS 18. I would like to know if this is a problem that will be resolved in future updates, or if it is a policy change.
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Oct ’24
Pkg installation package uploaded to macstore email prompt ITMS-90296
Project Background: I developed a Mac project using Electron and VSCode Successfully uploaded the packaged pkg using Transporter, However, I will receive an email informing me that there are some issues with the project: ITMS-90296: App sandbox not enabled - The following executors must include the 'com. apple. security. app sandbox' entitlement with a Boolean value of true in the entitlement property list: [[com. electron. iflyrecclient. pkg/Payload/iFlytek Listen. app/Contents/MacOS/iFlytek Listen]] ITMS-90886: 'Cannot be used with TestFlight because the signature for the bundle at' iFlytek hears. app 'is missing an application identifier but has an application identifier in the provisioning profile for the bundle.' Bundles with application identifiers in the provisioning profile are expected to have the same identifier signed into the bundle in order to be eligible for TestFlight.' Here is my packaging process: Generate an app using the electron packager tool Sign the app using @ electron osx sign (version 1.3.1) After signing, use productbuild - component Yourappname App/Applications - sign "3rd Party Mac Developer Installer: * * * * * (XXXXXXXXXX)" Yourappname. pkg command generates pkg PS: For the second step, I have set sand box=true in both entitlents.plist and entitlents.macinheriting. plist. And after signing, using codesign -dvvv -- entitiements - /path to view the app file shows' checkbox=true ', and the [iFlytek Listen. app/Contents/MacOS/iFlytek Listen] file in the issue also exists. Using the Suspicious Package software to view pkg also has sandbox=true. A few months ago, I uploaded it once and the issues mentioned in the email did not appear. The only changes were the macOS system version number and the replacement of the signature with provisionprofileprovisionprofile. I have reviewed similar issues on the Apple Developer Forums, but have not been resolved
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Nov ’24
signing and certificate
Hi, I'm currently developing a Flutter app that utilizes Push Notifications. The Android implementation is working flawlessly, but I'm encountering compilation issues in Xcode. Specifically, I'm receiving the following error: Cannot create a iOS App Development provisioning profile for "dk.ceniconsulting.alarm". Personal development teams, including "Henrik Thystrup", do not support the Push Notifications capability. No profiles for 'dk.ceniconsulting.alarm' were found Xcode couldn't find any iOS App Development provisioning profiles matching 'dk.ceniconsulting.alarm'. This error seems to be a common issue, but I haven't been able to find a definitive solution. I've already generated a certificate, identifier, and installed them, but the problem persists. Does anyone have any insights or suggestions on how to resolve this issue? Or perhaps a link to a resource that addresses this specific problem?
Topic: Code Signing SubTopic: General
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420
Nov ’24
Unable to Write Files Within App Bundle After Codesigning and Notarization
I have already posted asking about this: [quote='768005021, CynthiaSun, /thread/768005, /profile/CynthiaSun'] Codesigned and notarized app cannot directly write files inside the app bundle... [/quote] But there are still some doubts that have not been answered. We use Qt to develop an application on the macOS platform, and we are attempting to perform code signing and notarization to ensure our the application is trusted by Apple. However, there are a few things that seem weird regarding this statement: "App bundles are read-only by design." Let me provide more details. Currently, when our application starts, it needs to create folder (e.g. Temp) in the root directory of the executable For example: Myapp.app/Contents/MacOS/Myapp ---> Myapp.app/Contents/MacOS/Temp The folder is designed for storing runtime logs or config files for our application. In the past, users may also modify the settings inside target folder if needed. However, the strange thing is that after the application is codesigned and notarized. When we double-click the application Myapp (a.k.a Myapp.app) in Finder, it could successfully launch and create the Temp folder inside the Myapp.app/Contents/MacOS folder. However, when we navigate and attempt to run the main application executable in command line mode (as our application supports this command line execution) $ cd Myapp.app/Contents/MacOS $ ./Myapp -h As our application will check if the root folder has write permission before starting (i.e., check if Myapp.app/Contents/MacOS is writable because we require to create Temp folder in the following steps) It pop up the error that folder does not have write permission. The aforementioned scenarios seems to conflict with this statement: "App bundles are read-only by design" (because when the application is launched directly by clicking in Finder, the Temp folder can be created successfully, but via the console command line, it cannot). I would like to confirm again if writing files in the notarized application MacOS directory is not allowed? If not, have any recommended approaches? (e.g., changing the folder to another directory). What causes the different results in these running scenarios? We are not concerned about breaking the signature after application launched, as it seems that macOS will add it to system trust list after first time successfully launch. (Download the app from internet --> System: it is an app downloaded from the internet. Are you sure want to open it...? OK --> Although our application creates the Temp folder after first launch, when we click the application second time, it could directly open the app)
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Nov ’24
Trying to track down why codesign is now failing certain files
App is built using jdk21, jpackage to create dmg, pulls in the needed jre. Been working fine until about a week ago when notarize start failing bad signing, which when examined it's complaining modified files - a handful of jre license and copyright text files. DMGs built, signed and notarised successfully are now failing codesign verification. Has a macOS 15.1.1 release or Xcode 16.1 patched something, is there new behaviour to be aware of plse?
Topic: Code Signing SubTopic: General
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450
Dec ’24
LocalAuthentication like Face ID crashes using swift 6 iOS 18.1
Hello, I have been implementing faceID authentication using LocalAuthentication, and I've noticed that if i use swift 5 this code compiles but when i change to swift 6 it gives me a crash saying this compile error: i have just created this project for this error purpose so this is my codebase: import LocalAuthentication import SwiftUI struct ContentView: View { @State private var isSuccess: Bool = false var body: some View { VStack { if isSuccess { Text("Succed") } else { Text("not succeed") } } .onAppear(perform: authenticate) } func authenticate() { let context = LAContext() var error: NSError? if context.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &amp;error) { let reason = "We need to your face to open the app" context.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, localizedReason: reason) { sucexd, error in if sucexd { let success = sucexd Task { @MainActor [success] in isSuccess = success } } else { print(error?.localizedDescription as Any) } } } else { print(error as Any) } } } #Preview { ContentView() } also i have tried to not use the task block and also gives me the same error. i think could be something about the LAContext NSObject that is not yet adapted for swift 6 concurrency? also i tried to set to minimal but is the same error Im using xcode 16.1 (16B40) with M1 using MacOS Seqouia 15.0.1 Help.
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Dec ’24
Code Signing Python Libraries
I am trying to code sign an application which relies on many python libraries to run. For background knowledge, the .app was created with a —onefile command on Visual Studio. I code signed my application itself using codesign --deep --force --verify --timestamp --sign "Developer ID Application: Issey Yohannes (GL5BCCW69X)" /Users/isseyyohannes/Desktop/Automated\ ALGORA.app However, when I try to run the application the error shows in terminal as follows [PYI-16345:ERROR] Failed to load Python shared library '/var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python': dlopen: dlopen(/var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python, 10): no suitable image found. Did find: /var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python: code signature in (/var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python) not valid for use in process using Library Validation: mapped file has no Team ID and is not a platform binary (signed with custom identity or adhoc?) /var/folders/g9/2zbc7y_97xxbq7bnc301nnyc0000gn/T/_MEI6keRcA/Python: stat() failed with errno=1 Through some external tools, I was able to narrow the issue as follows Hardened Runtime Restriction: Your application is attempting to load a shared library (Python) at runtime, but the library is either: Not properly signed with the same Team ID as your app. Not marked as a valid platform binary. macOS requires all loaded libraries to comply with its code-signing and runtime security policies. Any insight is much appreciated.
Topic: Code Signing SubTopic: General
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633
Jan ’25
NSTask launchRequirementData
I've noticed that NSTaks has this property as of macOS 14.4 @property (nullable, copy) NSData *launchRequirementData API_AVAILABLE(macos(14.4)) API_UNAVAILABLE(ios, watchos, tvos, visionos); It has no documentation whatsoever. Even google search has no clue. Does this have anything to do with code signature requirements validation? Any explanations and examples would be appreciated!
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519
Jan ’25
Launching an app from Finder
Hi everyone. Sorry if this is not an appropriate forum section for this question. I'm making a game engine and it doesn't launch on my colleague's MacBook, although it does launch on mine. There's an application file, let's say, Sample.app. And along with it in the same folder there's Engine.dylib. If we look at the app-file structure, the executable file's path is Contents/MacOS/Sample. So for the executable file the library is located at the path ../../../Engine.dylib. But when my colleague runs the Sample.app file, he gets an error "Library not loaded: @executable_path/../../../Engine.dylib". Although the path is correct and on my MacBook it works. Are there any ideas how to fix it?
Topic: Code Signing SubTopic: General
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325
Feb ’25