Signing Certificates

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A signing certificate is a digital identity used for code signing during the build and archive process.

Posts under Signing Certificates tag

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Xcode Cloud Signing Issue
There seems to be a problem to a specific Apple Developer Account regarding Xcode Cloud Distribution (Signing). The Xcode Cloud Error Invalid Signature. Code failed to satisfy specified code requirement(s). The file at path “XcodeCloudTest.app/XcodeCloudTest” is not properly signed. 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. Investigation Apple Developer Forums This issue seems to be known: https://developer.apple.com/forums/thread/746210 Debugging by ourselves We setup an example Xcode project from a default iOS Xcode app template to rule out any project issues. This example project failed with the same error as stated above. In the next step we tried the same example project with a different Apple Developer Account and it successfully distributed the example App through Xcode Cloud. Conclusion It seems like there is no setup issue on developer-side, because our example project works out-of-the-box on a different Apple Developer Account. Our only hope is that Apple will have a look on our Developer Account. Maybe there is some internal setting.
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Mar ’25
Re-signing .app with a different team's (under same org) Developer ID Application identity
I am developing a macOS app that requires the Associated Domains entitlement. The app will be distributed as a custom app. The app needs to be signed using Team A’s Developer ID Application certificate and packaged under Team A’s Team ID. Team A has a secure signing and packaging setup, but they do not provide access to their Developer ID Application Identity (cert) or their provisioning profile. I am part of Team B and have access to Team B’s Developer ID Application identity and provisioning profiles. I am thinking of doing the following: I create a provisioning profile under Team B that authorizes the Associated Domains entitlement. I sign the app using Team B’s Developer ID Application identity, ensuring the required entitlements are included. Then, I re-sign the app using Team A’s Developer ID Application identity, since Team A has also set up the same bundle ID with the Associated Domains entitlement and corresponding provisioning profile. Questions: Is this approach correct & does it have any drawback? Will the double signing process work without issues, given that Team A has the required provisioning profile for the same bundle ID? Are there better ways to handle this situation where signing must be done under Team A but access is limited? Thanks!
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Mar ’25
Still possible to use XCode for local MacOS development without a bundle identifier?
I have used XCode for decades as my default C/C++ programming IDE. I write code that I run locally on my Mac, via "Sign to run locally". Typically this has always "just worked". I am now using MacOS 14.7 Sonoma, and I suddenly find I cannot run my code projects because I cannot dynamically load unsigned libraries. "not valid for use in process: library load disallowed by system policy" BUT - it appears that to allow my local MacOS code to bypass this requires I have a bundle identifier to modify entitlements. Which in turn requires a developer account which I don't have. Is this all correct? Is there any way to have code run locally and use dynamic libraries as I've done previously? Any advice is much appreciated.
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Mar ’25
Provisioning profile failed qualification. Profile doesn't support App Groups.
I can't upload my macOS app to app store connect. Each time i try to upload, i see this message: Provisioning profile failed qualification Profile doesn't support App Groups. An empty app without an app group uploads fine, but if i add an app group to it, it does not upload.
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Mar ’25
Cannot export p12 certificate
I have a pass type id that expired. I created a CSR in keychain access on my Mac. I uploaded the CSR and generated a new cert. I downloaded the new cert and imported into keychain access. I don't see the associated private key and I cannot export a .p12 certificate. It's possible I started with the wrong key to generate the CSR or maybe I inadvertently deleted key while trying to locate the cert after importing. I'm not sure how to determine which. I do still have the private key from the cert that expired. But, I cannot figure out how to sign a cert again, my only option now is download. I've been searching the forum and while there may be an answer, I may just be looking for the wrong thing. I could use some help if anybody would be so kind.
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Feb ’25
Unable to edit problematic keychain-access-groups setting of downloaded provisioningprofile for signing
In an expo managed project which utilizes custom expo plugins, we're having trouble getting the keychain-access-groups entitlement inserted to our provisioningprofile for signing. The provisioning profile we download from apple dev portal contains: <key>keychain-access-groups</key> <array> <string>56APMZ7FZY.*</string> <string>com.apple.token</string> </array> and this is not recognized by xcode for signing; an error is thrown: Provisioning profile "ccpp" doesn't include the com.apple.developer.keychain-access-groups entitlement. A matching error is thrown during EAS build. So we need to find a way to modify the ccpp.mobileprovision locally and then sign the build using the modified ccpp.mobileprovision. Or, we need guidance on the proper way to resolve this situation. Questions: why does the downloaded mobileprovision file have the keychain-access-groups key, and not com.apple.developer.keychain-access-groups? Both Xcode and EAS appear to demand the latter keyname. when I use expo prebuild, I am able to see the following in the .entitlements file: <key>com.apple.developer.keychain-access-groups</key> <array> <string>$(AppIdentifierPrefix)com.myapp</string> </array> I am adding this entitlement using a custom expo plugin. However, the mobileprovision file downloaded from apple developer portal has no knowledge of this setting which is only applied through expo prebuild. So what I am left with at the end is an entitlements file generated by my expo prebuild which has the correct setting, and a provisioningprofile downloaded from dev portal with an incorrect setting, and I don't know how to mend the downloaded provisioningprofile (incorrect setting) with my local entitlements file (correct setting).
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Feb ’25
Cannot Revoke iOS Development Certificate – "The specified resource does not exist"
I'm facing an issue with revoking an iOS Development certificate in the Apple Developer Console. The certificate is in "Pending Approval" status, and when I attempt to revoke it, I receive the following error: "The specified resource does not exist. There is no certificate with ID 'XXXXXXXXX' on this team." Despite this error, the certificate still appears in my list, and the only available action remains "Revoke." Steps I've tried so far: Refreshed the page and cleared the browser cache Logged out and back into my Developer account Tried using different browsers (Safari, Chrome) Checked Xcode &gt; Preferences &gt; Accounts for certificate status Contacting Apple Support (Not response since over 3 weeks) Additional Info: The certificate type is iOS Development, not Distribution. The status has been "Pending Approval" since creation.
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Feb ’25
Best Practices for Maintaining Long-Term Validity of Signed XCFrameworks
I am developing and distributing an XCFramework, and I want to ensure that it remains valid for as long as possible. I have some questions regarding certificate expiration and revocation: I understand that if an XCFramework is signed with a timestamp, it remains valid even after the signing certificate expires. However, if the signing certificate is revoked, the XCFramework immediately becomes unusable. As far as I know, Apple allows a maximum of two active distribution certificates at the same time. I assume that once a certificate expires, it will eventually need to be revoked in order to issue a third certificate. Is this correct? If an expired certificate is later revoked, will the XCFrameworks signed with that certificate also become invalid, even though they were timestamped? I want to ensure that released XCFrameworks remain valid for as long as possible. What is the best approach to achieve this? If anyone has insights or official documentation references on how to manage signing certificates for long-term XCFramework validity, I would appreciate your guidance. Thank you!
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Feb ’25
Why is xpc_connection_set_peer_code_signing_requirement() closing the connection instead of returning XPC_ERROR_PEER_CODE_SIGNING_REQUIREMENT?
I'm using libxpc in a C server and Swift client. I set up a code-signing requirement in the server using xpc_connection_set_peer_code_signing_requirement(). However, when the client doesn't meet the requirement, the server just closes the connection, and I get XPC_ERROR_CONNECTION_INTERRUPTED on the client side instead of XPC_ERROR_PEER_CODE_SIGNING_REQUIREMENT, making debugging harder. What I want: To receive XPC_ERROR_PEER_CODE_SIGNING_REQUIREMENT on the client when code-signing fails, for better debugging. What I’ve tried: Using xpc_connection_set_peer_code_signing_requirement(), but it causes the connection to be dropped immediately. Questions: Why does the server close the connection without sending the expected error? How can I receive the correct error on the client side? Are there any other methods for debugging code-signing failures with libxpc? Thanks for any insights!
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Feb ’25
Xcode 16.2 cannot sign developer app (AppKit) after upgraded to macOS 15.3
After I upgraded to macOS 15.3, all of my current Xcode project have the signing issue, I spent half day and I didn't make any progress, I tried two projects, one is Swift AppKit App calling one C++ dylib, another one is a pure Swift AppKit app, when I build, there will be error: Warning: unable to build chain to self-signed root for signer "Apple Development: Steven Tang (XXXXX)" /Volumes/TwoTSSD/steventang/Library/Developer/Xcode/DerivedData/ImageEnhancement-ddbilgyraofrdyfeljyuknusunza/Build/Products/Release/ImageEnhancement.app: errSecInternalComponent I tried remove account, add account back in Xcode, none of it worked, also tried ChatGPT's WWDR updating and it won't help.
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Feb ’25
How does xpc_connection_set_peer_code_signing_requirement work?
I have created a XPC server and client using C APIs. I want to ensure that I trust the client, so I want to have a codesigning requirement on the server side, something like - xpc_connection_set_peer_code_signing_requirement(listener, "anchor apple generic and certificate leaf[subject.OU] = \"1234567\"") This checks if the client code was signed by a code-signing-identity issued by Apple and that the teamID in the leaf certificate is 1234567. My questions are- Is using teamID as a signing requirement enough? What else can I add to this requirement to make it more secure? How does xpc_connection_set_peer_code_signing_requirement work internally? Does it do any cryptographic operations to verify the clients signature or does it simply do string matching on the teamID? Is there a way actually verify the clients signature(cryptographically) before establishing a connection with the server? (so we know the client is who he claims to be)
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Feb ’25
Developer ID Certificate (How to replace damaged certificate?)
How do I replace an Apple Developer ID Certificate that indicates it is not trusted? When I look at my Certificate Expiring 02-20-2025, I see a valid status displayed. (See annotation #1.) However, when I look at my Apple Developer ID Certificate renewal, I see the words not trusted. (See annotation #2.) I downloaded the renewal certificate and double double-clicked the downloaded item to place it in my KeyChain. This certificate period is from 01-21-2025 to 01-22-2030. QUESTIONS Why does the renewal certificate say "certificate is not trusted"? (Its period is 01-21-2025 to 01-22-2030. Today is 01-27-2025.) How did the renewal certificate get damaged? What must I do to get the damaged certificate replaced with a valid one?
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Jan ’25
Wrong Team ID on Certificate problem.
Hello, first of all thanks for reading my post. I am having a trouble about Signing & Capabilities part on Xcode during few days. Hope someone knows how to deal with this. I created a Apple Development certificate with CSR on my MacOS through KeyChain but the Team ID(VC78G4S77J) on this certificate is different with my real Team ID(FYF9AT8ZA8) logged in. I don't even know where this 'VC78G4S77J' came from. Also I created the identifier, bundle ID, device and profile but they were all created with 'FYF9AT8ZA8'. So here is the problem. On Xcode Signing & Capabilities section, I selected Team and put Bundle Identifier connected with 'FYF9AT8ZA8' but Signing Certificate is shown as 'Apple Development: My ID (VC78G4S77J). Therefore when I build iOS simulator on Xcode or VScode, there is error 'No signing certificate "iOS Development" found: No "iOS Development" signing certificate matching team ID "FYF9AT8ZA8" with a private key was found.' If I try turn off 'Automatically manage signing' and select provisioning profile I created, Xcode said my profile does not include VC78G4S77J certificate, because my profile has FYF9AT8ZA8 certificate. Importing profile file is not helpful also. I think, first delete the all VC78G4S77J certificate in KeyChain and recreate FYF9AT8ZA8 certificate through KeyChain/CSR, however again VC78G4S77J certicate was created when I created on 'developer.apple.com'. I truly have no idea where did VC78G4S77J come from. Please let me solve this issue.. Warm regards.
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Jan ’25
Could not find appropriate signing identity
I am attempting to sign a *.pkg for distribution but I get "Could not find appropriate signing identity for 'Developer ID Application: CompanyName'. I'm calling this command to sign: productsign --sign 'Developer ID Application: CompanyName' "unsigned.pkg" "signed.pkg" I've downloaded the WWDR Intermediates, when I go through Keychain Access &gt; Certificate Assistant &gt; Evaluate on the cert and select "Code Signing" I get "Evaluation Status: Success" and "Certificate Status: Good". Additionally my certificate shows up as valid in my keychain. I'm at a loss for what is going on.
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Jan ’25
Trouble Distributing App Archive to TestFlight: Xcode Archive and Code Signing Issues
Hi there, our team is facing a problem distributing our app archive to TestFlight. When we try to do so through the Product &gt; Archive option, we get a generic Xcode Archive error message, stating that we can’t distribute or validate it. This issue has been persistent for a few days now, and we’ve been unable to resolve it. We’ve reviewed the documentation (e.g., TN3110, TN3109) to ensure that we’ve set the “Skip Install” option to “No” and the Installation Directory to $(LOCAL_APPS_DIR). However, these changes haven’t made any difference. Another complication is that we’re using our team member’s developer account to distribute the app. As a result, we’ve encountered code signing issues with their credentials on our own devices. Despite our efforts, we’ve been unable to log in to their account. We would greatly appreciate any assistance you can provide in resolving this issue. Thank you for your attention to this matter.
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Jan ’25
TN3138: Handling App Store receipt signing certificate change
Hi (from France) I have a MacOS application which handles the App Store receipt by requesting at the url "https://buy.itunes.apple.com/verifyReceipt". From the response, I can know what are the inApps bought by the user and that suits for me. I don't know if if I must change something in my code accordingly to this TN3118. Does someone knows the response ? Best regards.
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Jan ’25
Trouble Distributing App Archive to TestFlight: Xcode Archive and Code Signing Issues
Hi, our team is facing a problem distributing our app archive to TestFlight. When we try to do so through the Product > Archive option, we get a generic Xcode Archive error message, stating that we can’t distribute or validate it. This issue has been persistent for a few days now, and we’ve been unable to resolve it. We’ve reviewed the documentation (e.g., TN3110, TN3109) to ensure that we’ve set the “Skip Install” option to “No” and the Installation Directory to $(LOCAL_APPS_DIR). However, these changes haven’t made any difference. Another complication is that we’re using our team member’s developer account to distribute the app. As a result, we’ve encountered code signing issues with their credentials on our own devices. Despite our efforts, we’ve been unable to log in to their account. We would greatly appreciate any assistance you can provide in resolving this issue. Thank you for your attention to this matter.
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Jan ’25
Confused about expiring certificates
Hi all, I got the email saying my certificate(s) will be expiring in 30 days. I can view my certificates (distribution, distribution managed, and 2x developments) on my account page. The distribution expires in 30 days (4/20/2023) The distribution managed expires in 6 months Development #1 (under my name) expires in 30 days (4/20/2023) Development #2 (also under my name) expires in 2 months (5/26/2023) However, I don't see any way to renew them. I have read other posts that talk about 'edit' or 'generate' buttons, but I don't see that and I presume those posts are just out of date. When I look in my xcode project, I see that I am using 'automatically manage singing'. Xcode also shows that a provisioning profile is expiring in 2 months. I presume that is something different? It has the same expiration date as my development #2 certificate (5/26/2023). It's also unclear what is going to happen when these certificates expire. I read that devices running builds with the expired distribution cert will stop working. Is that just for internal builds downloaded from something like Test Flight? Will live builds, downloaded by actual players from the AppStore, stop working if I don't push a release with a new cert in the next month? I am the one that set this all up and 'maintains' it, but I don't engage with it often enough to remember the bits and bobs. My apologies for all the newbie questions. Thank you for your assistance
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Jan ’25
How do you renew distribution certificates and create a cert request
I received this email and i cannot for the life of me figure out how to renew a distritbution certificate and create a request for signature certificate. This is all so confusing and not easy to follow at all. Please help, my distribution certificates expires on October 27th. Dear Daniel, Your Distribution Certificate will no longer be valid in 30 days. To generate a new certificate, sign in and visit Certificates, Identifiers &amp; Profiles. Certificate: Distribution Team ID: M96UCKJQHT To learn more about expired certificates, visit the certificates support page. Best regards, Apple Developer Relations
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Jan ’25