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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After submitting the DMG signature, a prompt indicating that it comes from an unidentified developer still appears when downloading and installing.
我是一名开发人员。除了App Store,我们公司的官方网站也是软件下载的一种方式。DMG签名提交后,通过网站下载安装软件时,仍然有提示说来自身份不明的开发者。您能告诉我如何解决这个问题吗?如果你能用中文回复就最好了。
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1.1k
Aug ’25
Notarization Fails: “The binary is not signed with a valid Developer ID certificate” for Flutter macOS App Plugins (file_picker, file_saver, url_launcher_macos)
Hi all, I’m trying to notarize a Flutter macOS app built in CI (GitHub Actions). The app builds and signs fine locally—codesign --verify --deep --strict and spctl --assess both pass. However, Apple’s notarization service consistently rejects the app with errors like: The binary is not signed with a valid Developer ID certificate: file_picker.framework The binary is not signed with a valid Developer ID certificate: file_saver.framework The binary is not signed with a valid Developer ID certificate: url_launcher_macos.framework What I’ve tried: Explicitly re-signing all frameworks with my Developer ID Application certificate and --timestamp Removing existing signatures before re-signing Ensuring correct entitlements and bundle identifier Matching the app bundle name and identifier in all places Using both codesign --deep and manual signing of each binary Local validation always passes, but notarization fails in CI Certificate: I am using a “Developer ID Application” certificate (not a “Mac Developer” or “Apple Development” certificate). The output of codesign -dvv for the problematic frameworks shows: Authority=Developer ID Application: [My Name/Team] ([Team ID]) So I believe I am not making the common mistake of using the wrong certificate type. CI Environment: GitHub Actions, macos-latest runner Flutter 3.27.2, stable channel All secrets (cert, Apple ID, app-specific password, team ID) are set up Questions: Has anyone encountered this with Flutter plugins or CI builds? Are there known issues with signing Flutter plugin frameworks for notarization? Is there a way to get more detailed feedback from Apple’s notarization service? Any advice or pointers would be greatly appreciated. I’m happy to provide logs, scripts, or a minimal project if needed. Thanks!
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164
May ’25
Maximum Development Certificates?
I recently had to update my certificates for a project. I deleted a few old ones, and I currently have one Development certificate. I needed to create another Development certificate specifically, it's saying "Maximum number of certificates generated." I thought the maximum was two Development certificates? Has anyone else had this issue? Thinking it could be a stuck workflow or something like that.
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172
Jul ’25
Critical Issue - Turkish Developer ID Certificates Contain Unhandled Extension
Dear Apple Developer Support, I am experiencing a critical issue with Developer ID certificates issued for Turkish (C=TR) developer accounts that prevents code signing on macOS. Issue Summary All Turkish Developer ID certificates issued on October 4, 2025, contain an Apple proprietary extension (OID 1.2.840.113635.100.6.1.13) marked as "critical" that both OpenSSL and codesign cannot handle. Technical Details Team ID: 4B529G53AG Certificate Country: TR (Turkey) Issue Date: October 4, 2025 macOS Version: 15.6.1 (24G90) Problematic Extension OID: 1.2.840.113635.100.6.1.13 (marked as critical) Evidence I have verified this issue across THREE different Turkish Developer ID certificates: Serial: 21F90A51423BA96F74F23629AD48C4B1 Serial: 461CBAF05C9EDE6E Serial: 184B6C2222DB76A376C248EC1E5A9575 All three certificates contain the same critical extension. Error Messages OpenSSL: error 34 at 0 depth lookup: unhandled critical extension Codesign: unable to build chain to self-signed root for signer errSecInternalComponent Comparison with Working Certificate My previous Developer ID certificate from Singapore (before revocation) worked perfectly and did NOT contain this critical extension. This confirms the issue is specific to Turkish certificates. Impact Cannot sign applications for distribution, which blocks: DMG signing for distribution Notarization process App distribution to users Questions What is the purpose of OID 1.2.840.113635.100.6.1.13? Why is it marked as critical only for Turkish certificates? Is this related to Turkish regulatory requirements? Can you issue a certificate without this critical extension? Is there a macOS update planned to support this extension? Request Please either: Issue a Developer ID certificate without the critical extension OID 1.2.840.113635.100.6.1.13 Provide a workaround for signing with current Turkish certificates Update the codesign tool to handle this extension This appears to be a systematic issue affecting all Turkish developers as of October 2025. Thank you for your urgent attention to this matter. Best regards,
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381
Oct ’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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137
May ’25
Failed to notarize a "distribution" pkg
I believe that this is related to the post https://developer.apple.com/forums/thread/790880. I essentially have the same problem that they did. I submit my Distribution PKG for notarization but the notarization fails and when I attempt to install the PKG user the UI I get a "External component packages (3) trustLevel=0 (trust evaluation failed; treating as invalid due to higher trust level for parent product archive)" However if I install using "sudo installer -verboseR -pkg ConcealDistribution.pkg -target /" everything works as expected. The difference between me and the other post is that when I expand my PKG using pkgutil --expand I do not have a Resources folder within my top level distribution. Instead my structure looks like ConcealDistribution ├── Distribution ├── ConcealConnect.pkg ├── ConcealBrowse.pkg └── ConcealUpdate.pkg The specific notary service errors I receive are as follows { "logFormatVersion": 1, "jobId": "7e30e3fd-1739-497c-a02e-64fbe357221d", "status": "Invalid", "statusSummary": "Archive contains critical validation errors", "statusCode": 4000, "archiveFilename": "ConcealDistribution.pkg", "uploadDate": "2025-10-08T19:41:33.491Z", "sha256": "40aacfacf25c6da0be8fe31ae9c145a25ddf9ed1f38be714687c74d95b26619d", "ticketContents": null, "issues": [ { "severity": "error", "code": null, "path": "ConcealDistribution.pkg", "message": "Package ConcealDistribution.pkg has no signed executables or bundles. No tickets can be generated.", "docUrl": null, "architecture": null }, { "severity": "warning", "code": null, "path": "ConcealDistribution.pkg", "message": "The contents of the package at ConcealDistribution.pkg could not be extracted.", "docUrl": null, "architecture": null } ] } For what its worth all the inner PKGs have their executables signed, the PKGs are signed themselves and they are all notarized and stapled without issue. Then I am attempting to sign and notarize the outer PKG and that is where the problems pop up. Additionally I'm not sure when this stopped working as I expected but just a few months ago I was able to do this exact same process and install with the UI and have it work.
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221
Oct ’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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130
May ’25
Urgent: Team is not yet configured for notarization, please help
So we are building a Tauri app and I have no been able to get our App to be Notarized using Developer ID. We have a ticket open for 3 months now. Can anyone help me out here? { "logFormatVersion": 1, "jobId": "e2ec4d13-bb83-41d4-a497-ba80cf830af1", "status": "Rejected", "statusSummary": "Team is not yet configured for notarization. Please contact Developer Programs Support at developer.apple.com under the topic Development and Technical / Other Development or Technical Questions.", "statusCode": 7000, "archiveFilename": "HIDDEN", "uploadDate": "2026-01-23T16:13:37.589Z", "sha256": "fd52815d5edf14b66b25529e89c207b2acff2c41642261e1049a479f19f2b72f", "ticketContents": null, "issues": null } How do we escalate to engineering team? Sincerely, Nash Gadre https://camouflagenetworks.com
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145
Jan ’26
App notarization is taking long
Hi, I read that notarization should be fairly quick. I thought that it was stuck, so I ended up sending a few submissions of the same app. I was wondering if you'd able to tell me the status of my latest submission (id: a094f93d-8bb2-47fe-a411-b6e357456ec7). It has been saying "In Progress" for over 3 hours now. If it is held for in-depth review, would you be able to tell me what's the wait period is like? Thanks!
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355
Jan ’26
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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248
May ’25
Crash log
base" : 6481543168, "size" : 5134811136, "uuid" : "7bc5af5f-1e86-3b36-9036-16025c72cb70" }, "vmSummary" : "ReadOnly portion of Libraries: Total=1.0G resident=0K(0%) swapped_out_or_unallocated=1.0G(100%)\nWritable regions: Total=28.8M written=369K(1%) resident=369K(1%) swapped_out=0K(0%) unallocated=28.5M(99%)\n\n VIRTUAL REGION \nREGION TYPE SIZE COUNT (non-coalesced) \n=========== ======= ======= \nActivity Tracing 256K 1 \nAttributeGraph Data 1024K 1 \nCoreAnimation 48K 3 \nDispatch continuations 6144K 1 \nFoundation 16K 1 \nKernel Alloc Once 32K 1 \nMALLOC 16.8M 10 \nMALLOC guard page 3760K 4 \nSTACK GUARD 64K 4 \nStack 2640K 4 \n__AUTH 3975K 362 \n__AUTH_CONST 60.1M 643 \n__CTF 824 1 \n__DATA 28.6M 604 \n__DATA_CONST 24.9M 650 \n__DATA_DIRTY 4800K 581 \n__FONT_DATA 2352 1 \n__INFO_FILTER 8 1 \n__LINKEDIT 188.3M 7 \n__OBJC_RO 84.3M 1 \n__OBJC_RW 3177K 1 \n__TEXT 839.6M 666 \n__TPRO_CONST 128K 2 \nmapped file 32.7M 3 \npage table in kernel 369K 1 \nshared memory 80K 4 \n=========== ======= ======= \nTOTAL 1.3G 3558 \n", "legacyInfo" : { "threadTriggered" : { "queue" : "com.apple.main-thread" } }, "logWritingSignature" : "96bc482de9d7d2e828b9b488a2feab6193d3c188", "bug_type" : "309", "roots_installed" : 0, "trmStatus" : 1, "trialInfo" : { "rollouts" : [ ], "experiments" : [
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275
Jan ’26
Entitlement not found
Dears, this is my first ever piece of code on Mac. I wanted to try ShazamKit. I created App Id and enabled App Service ShazamKit. I properly configured my app (a very small test app) with the proper boundle id, Team and entitlements file. I keep receiving this error in the Signing in section: Automatic signing failed Xcode failed to provision this target. Please address the following issues preventing automatic signing from creating a valid profile. Entitlement com.apple.developer.shazamkit not found and could not be included in profile. This likely is not a valid entitlement and should be removed from your entitlements file I noticed the message is mentioning "profile"...does it refer to a "Profile" as in "Certificate"/"Identifiers"/"Devices"/"Profiles"/"Keys"/"Services" option? I did not create any "Profile". I just enabled the App Service under "Certificates, Identifiers & Profiles"=>"Identifiers"=>"Edit your App ID Configuration"=>"App Services" Thx!
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465
Jan ’26
Creating codesigned AppleScript apps
In the past it was relatively easy to download from the developer portal both the app signing and installer signing certs so that I could sign AppleScripts from Script Editor when exporting them and when building packages in Jamf Composer. I went to set that up today and it seems things have changed in the last few years since I've had to set this up. I've been unable to sort this out and would love some help. I'm looking for a tutorial on doing this that walks someone step-by-step through the process for obtaining the certs (yes, I have dev account) and setting them up in keychain and then making use of them. Thanks!
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172
Jun ’25
Terminal command to show team for signing identity
In our local test configurations, a developer can sign test apps for device installation using any key associated with the company team. However, if a developer accidentally chooses an identity from some other team, installation fails with no information about the problem. It just mentions that no provisioning profile could be found, leaving everyone in the dark about what is wrong. Instead, we would like to pre-validate the selected signing identity by checking the team name or id. This could be done, for example, by extracting the x509 certificate from the signing identity and checking the "OU" field (which is set to the team id). However, none of the apple commands will divulge the x509 certificate from a developer id. So far our best options is to create a fake app, sign the app, then use command: codesign --display --extract-certificates This solution seems excessively serpentine. Is there no direct command that will accept the sha of a signing identity and return a nice .pem containing the associated certificate chain? Or, better yet, is there a command that takes the signing identity and simply returns the name or id of the associated team?
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355
Sep ’25
build failure due to certificates not matching
i am creating a app on "appmysite" while it runs its build test an error message pops up saying build failed. "it seems your app build has encountered an issue. the certificate used to generate the uploaded provisioning profile does not match the uploaded certificate." I understand why its saying it because the uploaded certificate had to be uploaded as ".p12". The certificate in the provisioning profile is made of ".cert". I am using a apple mac book and a xenovo windows computer. Im simply trying to figure out how to put the ".p12" certificate into the provisioning profile? whenever i go to my developer account and try to create a new provisioning account with the new ".p12" certificate. The only options that pop up for me to select are only the certificates that are in ".cert" form. I've tried exporting through "key access" and they show up in my files but no way to transfer to my developer account to combine it with a provisioning account. Any help is greatly appreciated, this is literally the only thing keeping my app from being ready for submission to review. ive been stuck on this for 3 days.
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319
Jan ’26
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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86
Jun ’25
How to move code signing certificates to another Mac
Hi, I recently created and installed new code signing certificates/keys on my main Mac. How to easily copy these certificates/keys to my another Mac with the same Apple ID? Earlier Quinn suggested: "The easiest way to do this is use Xcode’s import/export feature. Launch Xcode, choose Xcode > Settings, select Accounts, select the account in question, then choose Export Apple ID and Code Signing Assets from the action (…) menu." And it worked fine in 2020-2021. However import/export options are no longer available in XCode 16 anymore. Please suggest a simple solution.
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136
Mar ’25
Running iOS app on MacOS error: This app cannot be installed because its integrity could not be verified.
The attached file bellow contains the full error error I clone this repo to my mac, change team id and group, and run it in Xcode: https://github.com/protonpass/ios-pass There's no issue when I ran it with the Debug configuration, but when I go to Product > Scheme > Edit Scheme and change the iOS target build configuration to Release then I got that error above. I have tried Archive and export the ipa, verify that the provisioning profile contains my Mac UDID, but when double clicking the ipa to install, I also got the error This app cannot be installed because its integrity could not be verified.
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314
Jul ’25
Failed to register bundle identifier: 403 error
I am a developer with the following roles: Apple Developer Team = admin Using expo & EAS to build & sign = developer We are running a new project so credentials need to be sync'd up. With EAS i can either upload a p12 or use the automatic app signing credentials. I have successfully run this in other projects including another where I am the account owner/holder. For this new project, however, I am not the owner. When I try to "register bundle identifier" it results in: Error: Apple 403 detected - Access forbidden. This request is forbidden for security reasons - You currently don't have access to this membership resource. > eas credentials ✔ Select platform › iOS ✔ Which build profile do you want to configure? › preview ✔ Using build profile: preview If you provide your Apple account credentials we will be able to generate all necessary build credentials and fully validate them. This is optional, but without Apple account access you will need to provide all the missing values manually and we can only run minimal validation on them. ✔ Do you want to log in to your Apple account? … yes › Log in to your Apple Developer account to continue ✔ Apple ID: … myemail@gmail.com › Restoring session /Users/me/.app-store/auth/myemail@gmail.com/cookie ✔ Select a Team › My Project Team - Company/Organization (XXXXX) › Provider My Project Team LLC (XXXXX) ✔ Logged in Local session iOS Credentials Project @team/my-app Bundle Identifier com.teambundle.dev No credentials set up yet! ✔ What do you want to do? › Build Credentials: Manage everything needed to build your project iOS Credentials Project @team/my-app Bundle Identifier com.teambundle.dev No credentials set up yet! ✔ What do you want to do? › All: Set up all the required credentials to build your project ✖ Failed to register bundle identifier com.teambundle.dev Error: Apple 403 detected - Access forbidden. This request is forbidden for security reasons - You currently don't have access to this membership resource. Contact your team's Account Holder, MY MANAGER, or an Admin. Cryptic error? [Learn ](https://github.com/expo/fyi/blob/main/cryptic-error-eas.md) Why am I getting a 403?
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337
Jan ’26