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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When to notarize artifacts developed in different stages?
Dear Apple Support, for better understanding to use the Notary Service, I would like to ask when and what have to be notarized. I am absolutely aware of using the Notary Service and which packages can be submitted and how to get the status. Scenario: We have one library which is developed by a specific team and other teams develop and deliver to customer MacOS apps which packages this library for the shipment. So, the library will be produced internally and will be shipped in different products. The library will be code signed before we make available internally. When should we notarize (and staple) this library? Directly after the code is signed or when it will be packaged in each product when it will be delivered to customer? Best regards, Stefan
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May ’25
Apple Notarization: Long running notarization jobs / day limitation
Dear Apple support, Since the last couple of days, we have some (very) long running notarization requests. Similar requests were done normally under 1 minute. This behavior is unexpected to us, and we did not see it before. The issue occurs for a small CLI tool submitted as a ZIP archive. Checking the documentation, I come across the section about "Avoid long notarization response times and size limits" (https://developer.apple.com/documentation/security/customizing-the-notarization-workflow#Avoid-long-notarization-response-times-and-size-limits). One fact is mentioned “Limit notarizations to 75 per day.” What is behavior if that limitation is reached? Is that limitation per Apple ID or per team ID? Are there some known issues about Notarization Service? Best regards, Stefan
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May ’25
Endpoint Security entitlement while in dev
I'm working on a system extension leveraging endpoint security entitlement. However, while in development, is there a way to continue working and testing locally without having the endpoint security entitlement approved or needing the extension signed. I got these errors running a build: Provisioning profile "Mac Team Provisioning Profile: "com.xxxxx.extension" doesn't include the com.apple.developer.endpoint-security.client entitlement.
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May ’25
codesign command failed - Requirement syntax error - unexpected token
I am trying to distribute my Unity app to test flight. Build works on iPhone locally, archiving also works but when I start distribution to test flight I get this Error codesign command failed (/var/folders/gn/ql1bht8j2z7b18b3xtt0j7rr0000gn/T/XcodeDistPipeline.~~~2gmyFJ/Root/Payload/TondoJigsaw2.app/Frameworks/UnityFramework.framework: replacing existing signature /var/folders/gn/ql1bht8j2z7b18b3xtt0j7rr0000gn/T/XcodeDistPipeline.~~~2gmyFJ/Root/Payload/TondoJigsaw2.app/Frameworks/UnityFramework.framework: invalid or corrupted code requirement(s) Requirement syntax error(s): line 1:152: unexpected token: sQuaricon ) I am not sure what is the problem Team name is: “sQuaricon” Name Surname s.p. Bundle ID is: com.Squaricon.TondoJigsaw2 When I change bundle ID to com.testasd.TondoJigsaw2 (I do this in Xcode before archiving) that error disappears and I reach the part where I have to pick language. Even though this is not the solution, I think it is interesting, it implies issue might be with Bundle ID but this bundle ID is correct. I am using "automatically manage signing", I did not create any provisioning profile or certificate manually.
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May ’25
I can't distribute the build to Testflight
Hi the best community! When I try to submit the app to Testflight I receive the following error: "codesign command failed (/var/folders/j9/yh_rkh114rbgvmglf4gycj8w0000gn/T/XcodeDistPipeline.~~~OW0Dwk/Root/Payload/Application.app/Frameworks/Alamofire.framework: replacing existing signature /var/folders/j9/yh_rkh114rbgvmglf4gycj8w0000gn/T/XcodeDistPipeline.~~~OW0Dwk/Root/Payload/Application.app/Frameworks/Alamofire.framework: invalid or corrupted code requirement(s) Requirement syntax error(s): line 1:155: unexpected token: NPH )" I have never stuck with this issue before. Xcode Version 16.0 I assume that there is something related to code signing and our company name in App Store connect: Medical Institution “NPH” (The company name has been anonymized for privacy purposes.) Appreciate any help. Thank you!
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May ’25
Migrating Identifier from non-team prefix within single account
Hello, In our Account we have an iOS app with an explicit identifier "ABC123.com.some.app" that is using non-team prefix which is DEF456. It has also explicit identifiers for Widgets bundle and Notification Service. Due to non-team prefix, it can't access e.g. shared keychain and data put there by our other apps. Since we are working on features that require these capabilities, we would like to update the app identifier, so it is prefixed with our team id DEF456. Initially, we thought that the process would require steps like: Create new app, team-prefixed identifier(s) for app and all things that need them Recreate the provisioning profiles with new App Identifier Roll out the app using with new profiles via App Store but when trying to create the new identifier with com.some.app and team id prefix DEF456 we are getting following error: An App ID with Identifier com.some.app is not available. Please enter a different string. Can anybody advise us how to correctly perform such change and what steps are required from our end? We would like to keep our existing App Store entry, ratings and smoothly switch users. We are aware that this kind of migration results in loss of Keychain access. Thanks for any advice on that!
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May ’25
App Groups on macOS, 'Register App Groups' Code Signing Problems
So I just updated Xcode to 16.3 and updated a project to its recommended build settings which includes "Register App Groups". So I have an outside Mac App Store app that uses app groups. Here we have an action extension. I can't debug it, can't get it to run. Nothing useful in Xcode is displayed when I try... but it looks like a code signing issue when I run and have Console open. So I try to make a provisioning profile manually and set it...didn't work. I noticed now though in signing & capabilities the group id is in red...like it's invalid, or something? This was a "macOS styled" group without the "group." prefix. So am I supposed to switch it to have the group. prefix? It makes the red text go away (no warnings or anything about app groups here, just red text). So if I change it to group. prefix..does that make an entire new container?What happens on app update for installs that don't have group. prefix? Does the system transparently migrate the group? Or Am I supposed to migrate the entire group container to the identifier with group. prefix? Also how does this affect running on older version of macOS? If I go with the "group." prefix to make the red text go away,.. what happens on macOS 11.0? Got a little more than I bargained for here after midnight.
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May ’25
Notarization service says signature invalid, but codesign says it's fine
I'm trying to get an app notarized, which fails with this error: The signature of the binary is invalid. However, locally checking the signature does succeed: $ codesign -vvv --deep --strict TheApp.app […] TheApp.app: valid on disk TheApp.app: satisfies its Designated Requirement Performing this check on every single item in the app's MacOS folder also succeeds. Context: embedded prebuilt binaries Now, the app has something unusual about it: it embeds prebuilt binaries, arranged in various nested folders. So, the app bundle's MacOS folder actually contains another folder with a whole tree of executables and libraries: Removing these (before building) does fix the notarization issue, but obviously I'd like to keep them in. I did my best to properly sign these items: At build time, they're copied into the product by a Copy Files phase (but not signed), then signed by a script phase That signing uses the same signing identity as the running Xcode build, and enables the hardened runtime The app builds and runs correctly, even as a release build The app has runtime hardening and app sandbox enabled How should I go about diagnosing the notarization issue?
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May ’25
FamilyControls App Blocking Not Working for External TestFlight Testers
Hi everyone, I'm following up on this post I made earlier about an issue I'm having with FamilyControls and the DeviceActivityMonitor extension not working for external TestFlight testers. To briefly recap: I have official Apple approval for the com.apple.developer.family-controls entitlement (distribution) The entitlement is added to both my main app and the DeviceActivityMonitor extension The App Group is correctly configured for both targets On internal TestFlight builds, everything works as expected: app blocking works, the extension runs, and selected apps are shielded. On external TestFlight builds, users get the Screen Time permission prompt, can select apps to block, but nothing is blocked. Since that post, I submitted a Code Level Support request, and Apple asked me to file a bug report via Feedback Assistant. I did that almost a month ago. The only reply I’ve received since is that they can’t give a timeframe or guarantee it will be resolved. I'm stuck in limbo with no updates and no fix. This feature is critical to my app and I cannot launch without it. I’ve reached out to other developers who use app blocking, and none of them have run into this issue. My setup seems correct, and Apple has not said otherwise. If anyone has experienced something similar, found a workaround, or knows how to get real movement on a bug report like this, I would really appreciate any help. It’s been weeks, and I just want to launch my app. Thanks so much.
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May ’25
Binary Signing Error
I will post my app xyz.app uses XY swift package this swift package is a wrapper for XYSDK.xcframework XYSDK.xcframework written in c++ and app running on arm64 macos and iphones succesfully. I got this error when i want to distribute it. Currently i sign .framework for ios with Apple Distribution Certificate and same certificate for macos framework there is no other signing step for swift package or xcframework other than that when i want to archive it validates succesfully. Exporting step shows that app has signed, has provisining profile. but .framework is only signed has no provisioning profile. Also one point i see: i have one target named xyz and its Frameworks, Lİbraries and Embedded Context has only XY package but Embed part has no option like embed and sign etc. Blank. I need more info about what am i doing wrong in which step ? I am stuck and can not move any further like weeks Error Detail: Invalid Signature. The binary with bundle identifier XYSDK at path “xyz.app/Frameworks/XYSDK.framework” contains an invalid signature. Make sure you have signed your application with a distribution certificate, not an ad hoc certificate or a development certificate. Verify that the code signing settings in Xcode are correct at the target level (which override any values at the project level). Additionally, make sure the bundle you are uploading was built using a Release target in Xcode, not a Simulator target. If you are certain your code signing settings are correct, choose “Clean All” in Xcode, delete the “build” directory in the Finder, and rebuild your release target. For more information, please consult https://developer.apple.com/support/code-signing. (90035)
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May ’25
Handling Permissions After Transferring macOS App to a New Developer ID
I have a macOS application that was previously distributed under my personal Apple Developer account using a Developer ID certificate. We’ve recently transitioned distribution to our company’s Apple Developer account. The app’s bundle identifier has been successfully transferred, and I’ve signed a new build of the app using the company’s Developer ID certificate. The app installs and runs correctly under the new signature. However, I’ve encountered a problem: the app is no longer able to access previously granted permissions (e.g., Screen Recording, System Audio Recording, and Input Monitoring). Furthermore, it cannot re-prompt for these permissions because they appear as already granted in System Settings. From what I understand, this issue is due to the change in the code signing identity. Specifically, the designated requirements used by macOS to identify an app have changed, so the system no longer associates the new version of the app with the previously granted permissions (as outlined in Apple's Technical Note TN3127). The only workaround I’ve found so far is to manually reset the app's permissions using Terminal commands (e.g., tccutil reset), but this is not something we can reasonably ask end users to do. Question: Is there a recommended or supported approach to either preserve permissions when changing Developer ID identities, or programmatically trigger a permissions reset for existing users? We're looking for a seamless solution that doesn't degrade user experience.
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May ’25
JIT entitlement for command line tool
My command line tool with a JIT entitlement is failing to run on Sequoia. 2025-05-26 14:17:09.758 E taskgated-helper[91764:3ab7036] [com.apple.ManagedClient:ProvisioningProfiles] Disallowing DecisionRuleTool because no eligible provisioning profiles found 2025-05-26 14:17:09.758 Df amfid[576:3ab6d6b] /Users/jim/DecisionRuleTool not valid: Error Domain=AppleMobileFileIntegrityError Code=-413 "No matching profile found" UserInfo={NSURL=file:///Users/jim/DecisionRuleTool, NSLocalizedDescription=No matching profile found} 2025-05-26 14:17:09.759 Df kernel[0:3ab7031] (AppleMobileFileIntegrity) AMFI: When validating /Users/jim/DecisionRuleTool: 2025-05-26 14:17:09.759 Df kernel[0:3ab7031] mac_vnode_check_signature: /Users/jim/DecisionRuleTool: code signature validation failed fatally: When validating /Users/jim/DecisionRuleTool: 2025-05-26 14:17:09.759 Df kernel[0:3ab7031] proc 91763: load code signature error 4 for file "DecisionRuleTool" 2025-05-26 14:17:09.759 Df kernel[0:3ab7032] (AppleSystemPolicy) ASP: Security policy would not allow process: 91763, /Users/jim/DecisionRuleTool Codesign isn't giving me any clues as to why. It validates. Asking it what the entitlements are on the binary: % codesign --display --entitlements - /Users/joconnor/MACEP-9852-2/tools/detection/DecisionRuleTool Executable=/Users/jim/DecisionRuleTool [Dict] [Key] com.apple.application-identifier [Value] [String] XXXXXXXXX.com.mycompany.drt [Key] com.apple.developer.team-identifier [Value] [String] XXXXXXXXX [Key] com.apple.security.cs.allow-jit [Value] [Bool] true https://developer.apple.com/documentation/Xcode/signing-a-daemon-with-a-restricted-entitlement This makes it look like this may be hopeless, that I can't create a command line took with proper entitlements.
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May ’25
How to distribute DEXT during development and to the public
To learn how to develop/distribute a DriverKit driver (DEXT) and a UserClient app correctly, I am trying to run the following sample dext and app. https://developer.apple.com/documentation/driverkit/communicating-between-a-driverkit-extension-and-a-client-app?language=objc I walked throught steps in README.md included in the project and faced issues. First, I referred the "Configure the Sample Code Project" section in the README.md and configured the sample code project to build with automatic signing. I could run the app and activate the dext successfully and made sure the app could communicate with the dext. Next, I tried the manual signing. I followed steps described in the "Configure the Sample Code Project" section carefully. The following entitlements has already been assigned to my team account. DriverKit Allow Any UserClient Access DriverKit USB Transport - VendorID DriverKit I could build both app and dext and could run the app. However, when I clicked the "Install Dext" button to activate the dext, I got the following error: sysex didFailWithError: extension category returned error Am I missing something? I would also like to know detailed steps to publicly distribute my dext and app using our Developer ID Application Certificate, as README.md only shows how to configure the project for development. Xcode version: 16.3 (16E140) Development OS: macOS 15.5 (24F74) Target OS: macOS 15.5 (24F74)
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May ’25
App Sandbox & Missing Symbols for Nested PyInstaller App Bundle
Hi Developers, I'm encountering persistent validation errors in Xcode 16.3 (16E140) on macOS 15.4.1 (24E263) with M1 when archiving and distributing a macOS app (Developer ID signing + notarization). App Structure: A native Swift/Obj-C wrapper app that launches a nested .app inside its Resources. The nested app is built with PyInstaller and includes: A Python core Custom C++ binaries Many bundled .so libraries (e.g., from OpenCV, PyQt/PySide) Issues During Validation: App Sandbox Not Enabled Error: App Sandbox missing for NestedApp.app/Contents/MacOS/NestedExecutable. Question: For Developer ID (not App Store), is sandboxing strictly required for nested PyInstaller apps? If the wrapper is sandboxed, must the nested app be as well? Given the PyInstaller app's nature (requiring broad system access), how should entitlements be managed? Upload Symbols Failed Errors for missing .dSYM files for: The nested app’s executable Custom C++ binaries .so files (OpenCV, PyQt, etc.) These are either third-party or built without DWARF data, making .dSYM generation impractical post-build. Question: Are these symbol errors critical for Developer ID notarization (not App Store)? Can notarization succeed despite them? Is lack of symbol upload a known limitation with PyInstaller apps? Any best practices?
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May ’25
a required plist file or resource is malformed
I am facing this error on every flutter project build. Although it runs ok. The error happens on the codesign command What do I need to fix ? I have validated that every *.plist file is ok using plutil -lint ERROR MESSAGE /usr/bin/codesign --force --sign MY_SHA_CODE --verbose /Users/macbookair/workspace/flutter_application_1/build/ios/Release-iphoneos/Runner.app/Frameworks/libswiftCore.dylib)` exited with status 0. The command's output was: /Users/macbookair/workspace/flutter_application_1/build/ios/Release-iphoneos/Runner.app/Frameworks/libswiftCore.dylib: a required plist file or resource is malformed Info.plist <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CFBundleDevelopmentRegion</key> <string>$(DEVELOPMENT_LANGUAGE)</string> <key>CFBundleDisplayName</key> <string>Flutter Application 1</string> <key>CFBundleExecutable</key> <string>$(EXECUTABLE_NAME)</string> <key>CFBundleIdentifier</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>CFBundleInfoDictionaryVersion</key> <string>6.0</string> <key>CFBundleName</key> <string>flutter_application_1</string> <key>CFBundlePackageType</key> <string>APPL</string> <key>CFBundleShortVersionString</key> <string>$(FLUTTER_BUILD_NAME)</string> <key>CFBundleSignature</key> <string>????</string> <key>CFBundleVersion</key> <string>$(FLUTTER_BUILD_NUMBER)</string> <key>LSRequiresIPhoneOS</key> <true/> <key>UILaunchStoryboardName</key> <string>LaunchScreen</string> <key>UIMainStoryboardFile</key> <string>Main</string> <key>UISupportedInterfaceOrientations</key> <array> <string>UIInterfaceOrientationPortrait</string> <string>UIInterfaceOrientationLandscapeLeft</string> <string>UIInterfaceOrientationLandscapeRight</string> </array> <key>UISupportedInterfaceOrientations~ipad</key> <array> <string>UIInterfaceOrientationPortrait</string> <string>UIInterfaceOrientationPortraitUpsideDown</string> <string>UIInterfaceOrientationLandscapeLeft</string> <string>UIInterfaceOrientationLandscapeRight</string> </array> <key>CADisableMinimumFrameDurationOnPhone</key> <true/> <key>UIApplicationSupportsIndirectInputEvents</key> <true/></dict> </plist> Please help.
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May ’25
Constructing a filesystem sandbox, how to disable file events
I'm working on a build system similar to Bazel where each build action runs in a sandbox. The sandbox contains only the files that the user defined as input to ensure that the build action doesn't have any implicit dependencies. Bazel achieves this by creating a "symlink forest" to the original source files. This works, but I have observed fseventsd using significant CPU during a Bazel build, presumably because of all the symlinks that get created. Is there a way to disable file events for a directory or a volume? The "File System Events Programming Guide" in the Documentation Archive mentions placing an empty file named no_log in the .fseventsd directory at the root of the volume, but when testing on macOS 15.5 with APFS that appears to no longer work. Related, is a "symlink forest" the best way to create a sandbox like this? Or is there a different method one can use to provide a view of a subset of the files in a directory tree? I read up on the App Sandbox but that seems too coarse grained. Something like Linux's overlayfs would work well, and maybe one can achieve a similar functionality with firmlinks? Curious about folks thoughts here. Thanks in advance!
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May ’25
Definitive Rules for Using Secure Enclave on MacOS
Can someone tell me the applications requirements for using the secure enclave on MacOS? Does the application need to be signed with the secure-enclave entitlement in order to use it? Since this is a restricted entitlement, does my App ID need approval to use it from Apple? Currently I'm building in XCode 16 on Sequoia (15.5) using developer signing. My application is a C/C++ daemon running as plist out of /Library/LaunchDaemons. I have also built it as an application using the instructions here but this has not lead to a solution: https://developer.apple.com/documentation/xcode/signing-a-daemon-with-a-restricted-entitlement/ When I run my application from the command line via sudo signed but without the secure-enclave entitlement enabled in my entitlements file it runs. The first call to: SecAccessControlRef access = SecAccessControlCreateWithFlags( kCFAllocatorDefault, kSecAttrAccessibleWhenUnlockedThisDeviceOnly, kSecAccessControlPrivateKeyUsage, &error); succeeds without error. The call to create the key using: SecKeyRef privateKey = SecKeyCreateRandomKey(attributes, &error); then fails with error: (OSStatus error -50 - Failed to generate keypair) Here are the setup attributes (keySize = 256): CFDictionarySetValue(attributes, kSecAttrKeyType, kSecAttrKeyTypeECSECPrimeRandom); CFDictionarySetValue(attributes, kSecAttrKeySizeInBits, keySize); CFDictionarySetValue(attributes, kSecAttrLabel, keyName); CFDictionarySetValue(attributes, kSecAttrApplicationTag, keyLabel); CFDictionarySetValue(attributes, kSecAttrTokenID, kSecAttrTokenIDSecureEnclave); // Store in the Secure Enclave CFDictionarySetValue(attributes, kSecAttrKeyClass, kSecAttrKeyClassPrivate); CFDictionarySetValue(attributes, kSecAttrAccessControl, access); CFDictionarySetValue(attributes, kSecAttrIsPermanent, kCFBooleanTrue); // persist key across app restarts and reboots CFDictionarySetValue(attributes, kSecAttrCanEncrypt, kCFBooleanTrue); CFDictionarySetValue(attributes, kSecAttrCanDecrypt, kCFBooleanTrue); CFDictionarySetValue(attributes, kSecAttrAccessible, kSecAttrAccessibleWhenUnlockedThisDeviceOnly); CFDictionarySetValue(attributes, kSecReturnPersistentRef, kCFBooleanTrue); When I run the application signed and include the "com.apple.developer.secure-enclave" in my entitlements file it crashes at startup. I believe this is to be expected based on above. How do I proceed such that my application can use the secure enclave correctly?
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May ’25
Enterprise Vendor Id changing when it shouldn't
Hi All, Really weird one here... I have two bundle ids with the same reverse dns name... com.company.app1 com.company.app2 app1 was installed on the device a year ago. app2 was also installed on the device a year ago but I released a new updated version and pushed it to the device via Microsoft InTunes. A year ago the vendor Id's matched as the bundle id's were on the same domain of com.company. Now for some reason the new build of app2 or any new app I build isn't being recognised as on the same domain as app1 even though the bundle id should make it so and so the Vendor Id's do not match and it is causing me major problems as I rely on the Vendor Id to exchange data between the apps on a certain device. In an enterprise environment, does anyone know of any other reason or things that could affect the Vendor Id? According to Apple docs, it seems that only the bundle name affects the vendor id but it isn't following those rules in this instance.
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Jun ’25
How can I export the "Notary Profile" used by notarytool for CI/CD
Once I have built my macOS .app and signed it I run notarytool using this simple shell script: #!/bin/sh ditto -c -k --keepParent "$1.app" "$1.zip" xcrun notarytool submit "$1.zip" --keychain-profile "Notary Profile for DeepSkyStacker" --wait xcrun stapler staple $1.app rm -f $1.zip How can I export that "keychain-profile" (notary profile) so I can use it in CI/CD actions? Clearly I don't wish to expose the full invocation of xcrun notarytool store-credentials.
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Jun ’25