Prioritize user privacy and data security in your app. Discuss best practices for data handling, user consent, and security measures to protect user information.

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Sign In With Apple - invalid_client
I am trying to implement Apple Login on the web. The language I am using is PHP. I have created the App ID, Service ID, and Key. In the Service ID, I clicked the Configure button for Sign In With Apple and entered the domain and return URL. However, when I click the login button, I only get an "invalid_client" error screen.
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Jun ’25
Invalid web redirect url
I am implementing Apple Sign-In for a multi-platform application, specifically for the web component using the REST API flow. I am encountering an invalid_request Invalid web redirect url error when attempting to use a newly registered redirect URL. Here are the details: Original Test URL: I initially registered a redirect URL, let's call it [Your Original Test Redirect URL, e.g., https://test.yourdomain.com/auth/callback], for testing purposes. This URL worked correctly. New Service URL: I then registered a second redirect URL, [Your New Service Redirect URL, e.g., https://www.yourdomain.com/auth/callback], intended for my production service. This URL was registered approximately 5 days ago (including the weekend). The Problem: The new service URL ([Your New Service Redirect URL]) is still not working and consistently returns the invalid_request Invalid web redirect url error. Puzzling Behavior: Furthermore, I have since deleted the original test URL ([Your Original Test Redirect URL]) from the Service ID configuration in the Apple Developer portal. However, the deleted test URL still appears to function correctly when I use it. This situation is highly confusing: The newly registered URL is not working after 5 days, while the URL I have deleted from the configuration is still operational. The Service ID in question is [Your Service ID, e.g., com.yourdomain.service]. Could you please investigate why the new redirect URL ([Your New Service Redirect URL]) is not becoming active and is returning the invalid_request error, and also explain why the deleted URL ([Your Original Test Redirect URL]) remains functional? Any guidance or assistance you can provide to resolve this issue with the new URL would be greatly appreciated. Thank you for your time and support. Sincerely,
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Jun ’25
APP ID's indentifier not updating
When implementing Sign In with Apple I created an App ID and a Service ID for my app. I didn't configure the Server-to-Server Notification URL properly there and token revocation didn't work. Later on I updated the url config and the name of the identifiers. However, when I Sign in with Apple in my app I still see the old identifier name in my iPhone Settings->Apple Account->Sign in with Apple. I would assume that if the name doesn't update, the configuration doesn't update either. I'm using automatic Xcode signing, I have deleted all the profiles locally, cleaned project, bumped versions, waited for a week, nothing worked. Token revocation for account deletion doesn't work properly I would assume because of the initial misconfiguration. I want to mention that this is working fine for my development build (another bundleID, AppID, ServiceID) What am I missing here?
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Jun ’25
Sign in with Apple Not Working – "Sign Up Not Completed" Error
We have integrated Sign in with Apple into our iOS project using the recommended implementation from your documentation,However, we are experiencing issues when testing with the following: Bundle ID: com.app.xxx Using real certificates from our Apple Developer account Issue Details: On real devices, after entering the Apple ID password, we receive a message saying: "Sign-up not completed" On simulators, the flow gets stuck after entering the password no further progress occurs. We are not receiving any explicit error messages in the console or logs. We also tested with the official Apple sign-in demo code from the documentation link above, and the same issue occurred. Our team has confirmed that all necessary configurations have been set correctly, and the same implementation works on other accounts. We would appreciate your assistance in identifying the root cause and helping us resolve this issue. Thank you,
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Jun ’25
Migrating Sign in with Apple users for an app transfer
Question detail Dear Apple Developer Technical Support, We are currently following the official Apple documentation “TN3159: Migrating Sign in with Apple users for an app transfer” to carry out a Sign in with Apple user migration after successfully transferring several apps to a new developer account. Here is a summary of our situation: Under the original Apple developer account, we had five apps using Sign in with Apple, grouped under a shared primary app using App Grouping. Recently, we transferred three of these apps to our new Apple developer account via App Store Connect. After the transfer, these three apps are no longer associated with the original primary App ID. We reconfigured individual Services IDs for each app in the new account and enabled Sign in with Apple for each. More than 24 hours have passed since the app transfer was completed. Now we are attempting to follow the migration process to restore user access via the user.migration flow. Specifically, we are using the following script to request an Apple access token: url = "https://appleid.apple.com/auth/token" headers = {"Content-Type": "application/x-www-form-urlencoded"} data = { "grant_type": "client_credentials", "scope": "user.migration", "client_id": "com.game.friends.ios.xxxx", # New Primary ID in the new account "client_secret": "<JWT signed with new p8 key>" } response = requests.post(url, headers=headers, data=data) However, the API response consistently returns: { "error": "invalid_client" } We have verified that the following configurations are correct: The client_secret is generated using the p8 key from the new account, signed with ES256 and correct key_id, team_id, and client_id. The client_id corresponds to the Services ID created in the new account and properly associated with the migrated app. The scope is set to user.migration. The JWT payload contains correct iss, sub, and aud values as per Apple documentation. The app has been fully transferred and reconfigured more than 24 hours ago. Problem Summary & Request for Support: According to Apple’s official documentation: “After an app is transferred, Apple updates the Sign in with Apple configuration in the background. This can take up to 24 hours. During this time, attempts to authenticate users or validate tokens may fail.” However, we are still consistently receiving invalid_client errors after the 24-hour waiting period. We suspect one of the following issues: The transferred apps may still be partially associated with the original App Grouping or primary App ID. Some Sign in with Apple configuration in Apple’s backend may not have been fully updated after the transfer. Or the Services ID is not yet fully operational for the transferred apps in the new account. We kindly request your assistance to: Verify whether the transferred apps have been completely detached from the original App Grouping and primary App ID. Confirm whether the new Services IDs under the new account are fully functional and eligible for Sign in with Apple with user.migration scope. Help identify any remaining configuration or migration issues that may cause the invalid_client error. If necessary, assist in manually ungrouping or clearing any residual App Grouping relationships affecting the new environment. We have also generated and retained the original transfer_sub identifiers and are fully prepared to complete the sub mapping once the user.migration flow becomes functional. Thank you very much for your time and support!
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Jun ’25
Sign with apple
I have been working on integrate sign in with apple. I failed for a while. So I download the demo app from this link: https://developer.apple.com/documentation/authenticationservices/implementing-user-authentication-with-sign-in-with-apple And change the bundle id and add it to my paid apple developer account team. Then run it and test it on my all device. It always failed with showing sign up not completed and the log like below: Authorization failed: Error Domain=AKAuthenticationError Code=-7003 "(null)" UserInfo={AKClientBundleID=com.shuaichang.testsignin} LaunchServices: store (null) or url (null) was nil: Error Domain=NSOSStatusErrorDomain Code=-54 "process may not map database" UserInfo={NSDebugDescription=process may not map database, _LSLine=72, _LSFunction=_LSServer_GetServerStoreForConnectionWithCompletionHandler} Attempt to map database failed: permission was denied. This attempt will not be retried. Failed to initialize client context with error Error Domain=NSOSStatusErrorDomain Code=-54 "process may not map database" UserInfo={NSDebugDescription=process may not map database, _LSLine=72, _LSFunction=_LSServer_GetServerStoreForConnectionWithCompletionHandler} Failed to get application extension record: Error Domain=NSOSStatusErrorDomain Code=-54 "(null)" ASAuthorizationController credential request failed with error: Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1001 "(null)" authorizationController error: The operation couldn’t be completed. (com.apple.AuthenticationServices.AuthorizationError error 1001.)
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Jun ’25
Auth Plugin Timeout Issue During Screen Unlock
Hi! We are developing an authentication plugin for macOS that integrates with the system's authentication flow. The plugin is designed to prompt the user for approval via a push notification in our app before allowing access. The plugin is added as the first mechanism in the authenticate rule, followed by the default builtin:authenticate as a fallback. When the system requests authentication (e.g., during screen unlock), our plugin successfully displays the custom UI and sends a push notification to the user's device. However, I've encountered the following issue: If the user does not approve the push notification within ~30 seconds, the system resets the screen lock (expected behavior). If the user approves the push notification within approximately 30 seconds but doesn’t start entering their password before the timeout expires, the system still resets the screen lock before they can enter their password, effectively canceling the session. What I've Tried: Attempted to imitate mouse movement after the push button was clicked to keep the session active. Created a display sleep prevention assertion using IOKit to prevent the screen from turning off. Used the caffeinate command to keep the display and system awake. Tried setting the result as allow for the authorization request and passing an empty password to prevent the display from turning off. I also checked the system logs when this issue occurred and found the following messages: ___loginwindow: -[LWScreenLock (Private) askForPasswordSecAgent] | localUser = >timeout loginwindow: -[LWScreenLock handleUnlockResult:] _block_invoke | ERROR: Unexpected _lockRequestedBy of:7 sleeping screen loginwindow: SleepDisplay | enter powerd: Process (loginwindow) is requesting display idle___ These messages suggest that the loginwindow process encounters a timeout condition, followed by the display entering sleep mode. Despite my attempts to prevent this behavior, the screen lock still resets prematurely. Questions: Is there a documented (or undocumented) system timeout for the entire authentication flow during screen unlock that I cannot override? Are there any strategies for pausing or extending the authentication timeout to allow for complex authentication flows like push notifications? Any guidance or insights would be greatly appreciated. Thank you!
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Jun ’25
Launch Constraint, SIP and legacy launchd plist
I have 2 basic questions related to Launch Constraints: [Q1] Are Launch Constraints supposed to work when SIP is disabled? From what I'm observing, when SIP is disabled, Launch Constraints (e.g. Launch Constraint Parent Process) are not enforced. I can understand that. But it's a bit confusing considering that the stack diagram in the WWDC 2023 session is placing the 'Environment Constraints' block under SIP, not above. Also the documentation only mentions SIP for the 'is-sip-protected' fact. [Q2] Is the SpawnConstraint key in legacy launchd plist files (i.e. inside /Library/Launch(Agents|Daemons)) officially supported? From what I'm seeing, it seems to be working when SIP is enabled. But the WWDC session and the documentation don't really talk about this case.
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Jun ’25
DCError.invalidInput on generateAssertion() - Affecting Small Subset of Users
Issue Summary I'm encountering a DCError.invalidInput error when calling DCAppAttestService.shared.generateAssertion() in my App Attest implementation. This issue affects only a small subset of users - the majority of users can successfully complete both attestation and assertion flows without any issues. According to Apple Engineer feedback, there might be a small implementation issue in my code. Key Observations Success Rate: ~95% of users complete the flow successfully Failure Pattern: The remaining ~5% consistently fail at assertion generation Key Length: Logs show key length of 44 characters for both successful and failing cases Consistency: Users who experience the error tend to experience it consistently Platform: Issue observed across different iOS versions and device types Environment iOS App Attest implementation Using DCAppAttestService for both attestation and assertion Custom relying party server communication Issue affects ~5% of users consistently Key Implementation Details 1. Attestation Flow (Working) The attestation process works correctly: // Generate key and attest (successful for all users) self.attestService.generateKey { keyId, keyIdError in guard keyIdError == nil, let keyId = keyId else { return completionHandler(.failure(.dcError(keyIdError as! DCError))) } // Note: keyId length is consistently 44 characters for both successful and failing users // Attest key with Apple servers self.attestKey(keyId, clientData: clientData) { result in // ... verification with RP server // Key is successfully stored for ALL users (including those who later fail at assertion) } } 2. Assertion Flow (Failing for ~5% of Users with invalidInput) The assertion generation fails for a consistent subset of users: // Get assertion data from RP server self.assertRelyingParty.getAssertionData(kid, with: data) { result in switch result { case .success(let receivedData): let session = receivedData.session let clientData = receivedData.clientData let hash = clientData.toSHA256() // SHA256 hash of client data // THIS CALL FAILS WITH invalidInput for ~5% of users // Same keyId (44 chars) that worked for attestation self.attestService.generateAssertion(kid, clientDataHash: hash) { assertion, err in guard err == nil, let assertion = assertion else { // Error: DCError.invalidInput if let err = err as? DCError, err.code == .invalidKey { return reattestAndAssert(.invalidKey, completionHandler) } else { return completionHandler(.failure(.dcError(err as! DCError))) } } // ... verification logic } } } 3. Client Data Structure Client data JSON structure (identical for successful and failing users): // For attestation (works for all users) let clientData = ["challenge": receivedData.challenge] // For assertion (fails for ~5% of users with same structure) var clientData = ["challenge": receivedData.challenge] if let data = data { // Additional data for assertion clientData["account"] = data["account"] clientData["amount"] = data["amount"] } 4. SHA256 Hash Implementation extension Data { public func toSHA256() -> Data { return Data(SHA256.hash(data: self)) } } 5. Key Storage Implementation Using UserDefaults for key storage (works consistently for all users): private let keyStorageTag = "app-attest-keyid" func setKey(_ keyId: String) -> Result<(), KeyStorageError> { UserDefaults.standard.set(keyId, forKey: keyStorageTag) return .success(()) } func getKey() -> Result<String?, KeyStorageError> { let keyId = UserDefaults.standard.string(forKey: keyStorageTag) return .success(keyId) } Questions User-Specific Factors: Since this affects only ~5% of users consistently, could there be device-specific, iOS version-specific, or account-specific factors that cause invalidInput? Key State Validation: Is there any way to validate the state of an attested key before calling generateAssertion()? The key length (44 chars) appears normal for both successful and failing cases. Keychain vs UserDefaults: Could the issue be related to using UserDefaults instead of Keychain for key storage? Though this works for 95% of users. Race Conditions: Could there be subtle race conditions or timing issues that only affect certain users/devices? Error Recovery: Is there a recommended way to handle this error? Should we attempt re-attestation for these users? Additional Context & Debugging Attempts Consistent Failure: Users who experience this error typically experience it on every attempt Key Validation: Both successful and failing users have identical key formats (44 character strings) Device Diversity: Issue observed across different device models and iOS versions Server Logs: Our server successfully provides challenges and processes attestation for all users Re-attestation: Forcing re-attestation sometimes resolves the issue temporarily, but it often recurs The fact that 95% of users succeed with identical code suggests there might be some environmental or device-specific factor that we're not accounting for. Any insights into what could cause invalidInput for a subset of users would be invaluable.
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Jun ’25
App Attest Suddenly Failing in Production — Error 4 (serverUnavailable)
Hi Apple Team and Community, We've encountered a sudden and widespread failure with the App Attest service starting today across multiple production apps and regions. The previously working implementation is now consistently returning the following error on iOS: The operation couldn’t be completed. (com.apple.devicecheck.error error 4.) (serverUnavailable) Despite the green status on Apple’s System Status page, this appears to be a backend issue—possibly infrastructure or DNS-related. Notably: The issue affects multiple apps. It is reproducible across different geographies. No code changes were made recently to the attestation logic. We previously reported a similar concern in this thread: App Attest Attestation Failing, but this new occurrence seems unrelated to any client-side cause. Update: An Apple engineer in this thread(https://developer.apple.com/forums/thread/782987) confirmed that the issue was due to a temporary DNS problem and has now been resolved. Can anyone else confirm seeing this today? Any insights from Apple would be appreciated to ensure continued stability. Thanks!
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Jun ’25
How to use App Attest Environment?
Hi, I'm looking at adding App Attest to an app, and I think I understand the mechanics of the attestation process, but I'm having trouble figuring out how development and testing are supposed to work. Two main questions: The "App Attest Environment" -- the documentation says that attestation requests made in the .development sandbox environment don't affect the app's risk metrics, but I'm not sure how to actually use this sandbox. My understanding is that one of the things App Attest does is to ensure that your app has been appropriately signed by the App Store, so it knows that it hasn't been tampered with. But the docs say that App Store builds (and Test Flight and Developer Enterprise Program) always use the .production environment. Does App Attest actually work for local developer-build apps if you have this entitlement set? Presumably only on hardware devices since it requires the Secure Enclave? Does our headend have to do something different when verifying the public key and subsequent attested requests for an app that's using the .development sandbox? The docs do mention that a headend server should potentially track two keys per device/user pair so that it can have a production and development key. How does the headend know if a key is from the sandbox environment? Thanks!
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Jun ’25
Can child processes inherit Info.plist properties of a parent app (such as LSSupportsGameMode)?
My high-level goal is to add support for Game Mode in a Java game, which launches via a macOS "launcher" app that runs the actual java game as a separate process (e.g. using the java command line tool). I asked this over in the Graphics & Games section and was told this, which is why I'm reposting this here. I'm uncertain how to speak to CLI tools and Java games launched from a macOS app. These sound like security and sandboxing questions which we recommend you ask about in those sections of the forums. The system seems to decide whether to enable Game Mode based on values in the Info.plist (e.g. for LSApplicationCategoryType and GCSupportsGameMode). However, the child process can't seem to see these values. Is there a way to change that? (The rest of this post is copied from my other forums post to provide additional context.) Imagine a native macOS app that acts as a "launcher" for a Java game.** For example, the "launcher" app might use the Swift Process API or a similar method to run the java command line tool (lets assume the user has installed Java themselves) to run the game. I have seen How to Enable Game Mode. If the native launcher app's Info.plist has the following keys set: LSApplicationCategoryType set to public.app-category.games LSSupportsGameMode set to true (for macOS 26+) GCSupportsGameMode set to true The launcher itself can cause Game Mode to activate if the launcher is fullscreened. However, if the launcher opens a Java process that opens a window, then the Java window is fullscreened, Game Mode doesn't seem to activate. In this case activating Game Mode for the launcher itself is unnecessary, but you'd expect Game Mode to activate when the actual game in the Java window is fullscreened. Is there a way to get Game Mode to activate in the latter case? ** The concrete case I'm thinking of is a third-party Minecraft Java Edition launcher, but the issue can also be demonstrated in a sample project (FB13786152). It seems like the official Minecraft launcher is able to do this, though it's not clear how. (Is its bundle identifier hardcoded in the OS to allow for this? Changing a sample app's bundle identifier to be the same as the official Minecraft launcher gets the behavior I want, but obviously this is not a practical solution.)
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Jun ’25
Certificate Trust Failing in Latest OS Releases
Trying to apply 'always trust' to certificate added to keychain using both SecItemAdd() and SecPKCS12Import() with SecTrustSettingsSetTrustSettings(). I created a launchdaemon for this purpose. AuthorizationDB is modified so that any process running in root can apply trust to certificate. let option = SecTrustSettingsResult.trustRoot.rawValue // SecTrustSettingsResult.trustAsRoot.rawValue for non-root certificates let status = SecTrustSettingsSetTrustSettings(secCertificate, SecTrustSettingsDomain.admin, [kSecTrustSettingsResult: NSNumber(value: option.rawValue)] as CFTypeRef). Above code is used to trust certificates and it was working on os upto 14.7.4. In 14.7.5 SecTrustSettingsSetTrustSettings() returns errAuthorizationInteractionNotAllowed. In 15.5 modifying authorization db with AuthorizationRightSet() itself is returning errAuthorizationDenied.Tried manually editing authorization db via terminal and same error occurred. Did apple update anything on Security framework? Any other way to trust certificates?
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Jun ’25