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DeviceCheck - Device Validation Endpoint not working
We have been having very high response times in device check device validation service (https://developer.apple.com/documentation/devicecheck/accessing-and-modifying-per-device-data#Create-the-payload-for-a-device-validation-request) since 17 July at 19:10hs GMT. The service information page says the service was running in green status but that isn't the case and we currenly have stop consuming it. Is it being looked at? Are you aware of this issue? Can you give us an estimate of when it should be working correctly?
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807
Jul ’25
Help with Entitlements for Keychain Access
Hi everyone, I’m working an Objective-C lib that performs Keychain operations, such as generating cryptographic keys and signing data. The lib will be used by my team in a Java program for macOS via JNI. When working with the traditional file-based Keychain (i.e., without access control flags), everything works smoothly, no issues at all. However, as soon as I try to generate a key using access control flags SecAccessControlCreateWithFlags, the Data Protection Keychain returns error -34018 (errSecMissingEntitlement) during SecKeyCreateRandomKey. This behavior is expected. To address this, I attempted to codesign my native dynamic library (.dylib) with an entitlement plist specifying various combinations of: keychain-access-groups com.apple.security.keychain etc. with: My Apple Development certificate Developer ID Application certificate Apple Distribution certificate None of these combinations made a difference, the error persists. I’d love to clarify: Is it supported to access Data Protection Keychain / Secure Enclave Keys in this type of use case? If so, what exact entitlements does macOS expect when calling SecKeyCreateRandomKey from a native library? I’d really appreciate any guidance or clarification. Thanks in advance! Best regards, Neil
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421
Jul ’25
Screen Not Locking with authenticate in Screensaver
I modified the system.login.screensaver rule in the authorization database to use "authenticate" instead of "use-login-window-ui" to display a custom authentication plugin view when the screensaver starts or the screen locks. However, I noticed an issue when the "Require Password after Display is Turned Off" setting is set to 5 minutes in lock screen settings: If I close my Mac’s lid and reopen it within 5 minutes, my authentication plugin view is displayed as expected. However, the screen is not in a locked state—the desktop remains accessible, and the black background that typically appears behind the lock screen is missing. This behavior differs from the default lock screen behavior, where the screen remains fully locked, and the desktop is hidden. Has anyone encountered this issue before? Is there a way to ensure the screen properly locks when using authenticate in the screensaver rule?
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235
Apr ’25
Can't open p12 file inside my application
I need to open p12 file from other iOS applications to import private key to my application. My app is set up to be able to open nay file with following 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>CFBundleDocumentTypes</key> <array> <dict> <key>CFBundleTypeName</key> <string>Files</string> <key>LSHandlerRank</key> <string>Default</string> <key>LSItemContentTypes</key> <array> <string>public.item</string> <string>public.data</string> <string>public.content</string> </array> </dict> </array> </dict> </plist> But my don't appear in share dialog from Files or Mail app for example. There are however other third party apps that can accept this file. Some of them use Share extension which I don't have, but some of them don't have it as far as I can understand. At least they don't present any UI and open apps directly. Also I've tried to specify com.rsa.pkcs-12 UTI directly but it didn't help. Also noticed that *.crt files have similar behaviour. Am I missing something about this specific file type?
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125
Apr ’25
ASWebAuthenticationSession crash after window closes on macOS
I'm trying to use ASWebAuthenticationSession on macOS but there is a weird crash and I have no idea what to do. It looks like there is a main thread check in a framework code that I have no control over. Any help would be appreciated. Thank you in advance. The stack of crashed thread has no symbols, even for supposedly my code in OAuthClient.authenticate. macOS 15.4.1 (24E263) Xcode Version 16.3 (16E140) Thread 11: EXC_BREAKPOINT (code=1, subcode=0x10039bb04) Thread 12 Queue : com.apple.NSXPCConnection.m-user.com.apple.SafariLaunchAgent (serial) #0 0x0000000100b17b04 in _dispatch_assert_queue_fail () #1 0x0000000100b52834 in dispatch_assert_queue$V2.cold.1 () #2 0x0000000100b17a88 in dispatch_assert_queue () #3 0x000000027db5f3e8 in swift_task_isCurrentExecutorWithFlagsImpl () #4 0x00000001022c7754 in closure #1 in closure #1 in OAuthClient.authenticate() () #5 0x00000001022d0c98 in thunk for @escaping @callee_guaranteed (@in_guaranteed URL?, @guaranteed Error?) -> () () #6 0x00000001c7215a34 in __102-[ASWebAuthenticationSession initWithURL:callback:usingEphemeralSession:jitEnabled:completionHandler:]_block_invoke () #7 0x00000001c72163d0 in -[ASWebAuthenticationSession _endSessionWithCallbackURL:error:] () #8 0x00000001c7215fc0 in __43-[ASWebAuthenticationSession _startDryRun:]_block_invoke_2 () #9 0x0000000194e315f4 in __invoking___ () #10 0x0000000194e31484 in -[NSInvocation invoke] () #11 0x00000001960fd644 in __NSXPCCONNECTION_IS_CALLING_OUT_TO_REPLY_BLOCK__ () #12 0x00000001960fbe40 in -[NSXPCConnection _decodeAndInvokeReplyBlockWithEvent:sequence:replyInfo:] () #13 0x00000001960fb798 in __88-[NSXPCConnection _sendInvocation:orArguments:count:methodSignature:selector:withProxy:]_block_invoke_3 () #14 0x0000000194a6ef18 in _xpc_connection_reply_callout () #15 0x0000000194a6ee08 in _xpc_connection_call_reply_async () #16 0x0000000100b3130c in _dispatch_client_callout3_a () #17 0x0000000100b362f8 in _dispatch_mach_msg_async_reply_invoke () #18 0x0000000100b1d3a8 in _dispatch_lane_serial_drain () #19 0x0000000100b1e46c in _dispatch_lane_invoke () #20 0x0000000100b2bfbc in _dispatch_root_queue_drain_deferred_wlh () #21 0x0000000100b2b414 in _dispatch_workloop_worker_thread () #22 0x0000000100c0379c in _pthread_wqthread () My code: @MainActor func authenticate() async throws { let authURL = api.authorizationURL( scopes: scopes, state: state, redirectURI: redirectURI ) let authorizationCodeURL: URL = try await withUnsafeThrowingContinuation { c in let session = ASWebAuthenticationSession(url: authURL, callback: .customScheme(redirectScheme)) { url, error in guard let url = url else { c.resume(throwing: error ?? Error.unknownError("Failed to get authorization code")) return } c.resume(returning: url) } session.presentationContextProvider = presentationContextProvider session.start() } let authorizationCode = try codeFromAuthorizationURL(authorizationCodeURL) (storedAccessToken, storedRefreshToken) = try await getTokens(authorizationCode: authorizationCode) } Here is disassembly of the crashed function. libdispatch.dylib`_dispatch_assert_queue_fail: 0x10067fa8c <+0>: pacibsp 0x10067fa90 <+4>: sub sp, sp, #0x50 0x10067fa94 <+8>: stp x20, x19, [sp, #0x30] 0x10067fa98 <+12>: stp x29, x30, [sp, #0x40] 0x10067fa9c <+16>: add x29, sp, #0x40 0x10067faa0 <+20>: adrp x8, 71 0x10067faa4 <+24>: add x8, x8, #0x951 ; "not " 0x10067faa8 <+28>: adrp x9, 70 0x10067faac <+32>: add x9, x9, #0x16b ; "" 0x10067fab0 <+36>: stur xzr, [x29, #-0x18] 0x10067fab4 <+40>: cmp w1, #0x0 0x10067fab8 <+44>: csel x8, x9, x8, ne 0x10067fabc <+48>: ldr x10, [x0, #0x48] 0x10067fac0 <+52>: cmp x10, #0x0 0x10067fac4 <+56>: csel x9, x9, x10, eq 0x10067fac8 <+60>: stp x9, x0, [sp, #0x10] 0x10067facc <+64>: adrp x9, 71 0x10067fad0 <+68>: add x9, x9, #0x920 ; "BUG IN CLIENT OF LIBDISPATCH: Assertion failed: " 0x10067fad4 <+72>: stp x9, x8, [sp] 0x10067fad8 <+76>: adrp x1, 71 0x10067fadc <+80>: add x1, x1, #0x8eb ; "%sBlock was %sexpected to execute on queue [%s (%p)]" 0x10067fae0 <+84>: sub x0, x29, #0x18 0x10067fae4 <+88>: bl 0x1006c258c ; symbol stub for: asprintf 0x10067fae8 <+92>: ldur x19, [x29, #-0x18] 0x10067faec <+96>: str x19, [sp] 0x10067faf0 <+100>: adrp x0, 71 0x10067faf4 <+104>: add x0, x0, #0x956 ; "%s" 0x10067faf8 <+108>: bl 0x1006b7b64 ; _dispatch_log 0x10067fafc <+112>: adrp x8, 108 0x10067fb00 <+116>: str x19, [x8, #0x2a8] -> 0x10067fb04 <+120>: brk #0x1
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162
May ’25
Detecting iOS screen sharing
Hello, Is there any way to detect if the iOS screen is currently being shared via FaceTime or iPhone Mirroring? Our application relies on this information to help ensure that users are not accessing it from one location while physically being in another.
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224
Jul ’25
Yubikey Authentication iPad/iOS26
Hey all, Question for the masses.... Does the Yubikey authentication have a OS dependency and it only works with a stable, public OS? Does Azure/Okta/Yubikey beta OS26? My CEO installed iPadOS 26 on his iPad and was not able to authenticate via Yubikey into our company environment. I ran the same scenario on my iPad using iPadOS 26 and I had the same results. Downgrading to iPAdOS doesn't pose these issues. I'm assuming something isn't fine-tuned yet?
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1
419
Aug ’25
Accessing the key generated by DCAppAttestService
Hi, is it somehow possible to access a key that was generated by the DCAppAttestService generateKey() function? I need to be 100% sure that no actor from within or outside of my app can access the generated key with the DeviceCheck Framework. It would also be helpful to get some official resources to the topic. Thank you in advance, Mike
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328
Oct ’25
Can you use App Attest in Enterprise Builds?
I'm a bit confused about if using App Attest is possible in enterprise builds. It shows up under identifiers in the apple dev portal and I can add it to my provisioning file and entitlements file. But if I go to keys I cannot create a key for it. This page implies it can be used for enterprise builds: After distributing your app through TestFlight, the App Store, or the Apple Developer Enterprise Program, your app ignores the entitlement you set and uses the production environment.
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323
May ’25
passkey in iOS via iCloudKeyChain
I have a very basic binary question around passkeys. Assuming everything is on latest and greatest version with respect to iOS, when user starts creating a passkey in platform-authenticator i.e., iCloudKeyChain (Apple Password Manager) , will iCloudKeyChain create a hardware-bound passkey in secure-enclave i.e., is brand new key-pair created right inside Secure-enclave ? OR will the keypair be created in software i.e., software-bound-passkey ?? i.e., software-bound keypair and store the private-key locally in the device encrypted with a key that is of course created in secure-enclave.
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171
May ’25
App IPA upgrade loses access to keychaingroup
Hi, Our App relies on a keychain to store certificates and key-value pairs. However, when we upgraded from an older XCode 15.2 (1 year old) app version to a newer version XCode 16.2 (with identical keychain-groups entitlement), we found that the newer ipa cannot see the older keychain group anymore... We tried Testflight builds, but limited to only generating newer versions, we tried using the older App's code, cast as a newer App version, and then upgraded to the newer code (with an even newer app version!). Surprisingly we were able to see the older keychain group. So it seems that there's something different between the packaging/profile of the older (1 year) and newer (current) App versions that seems to cause the new version to not see the old keychainGroup... Any ideas?
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204
Aug ’25
Issues with Password based Platform SSO
We are using Apple's PSSO to federate device login to out own IdP. We have developed our own extension app and deployed it using MDM. Things works fine but there are 2 issues that we are trying to get to the root cause - On some devices after restarting we see an error message on the logic screen saying "The registration for this device is invalid and must be repaired" And other error message is "SmartCard configuration is invalid for this account" For the 1st we have figured out that this happens when the registration doesn't happen fully and the key is not tied to the user so when the disk needs to be decrypted at the FileVault screen the issue is raised. For the "SmartCard configuration is invalid for this account" issue also one aspect is invalid registration but there has been other instances as well where the devices were registered completely but then also the the above error was raised. We verified the registration being completed by checking if the SmartCard is visible in the System Report containing the key. Has anyone seen the above issues and any possible resolution around it?
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215
Oct ’25
How to Hide the "Save to Another Device" Option During Passkey Registration?
I'm working on integrating Passkey functionality into my iOS app (targeting iOS 16.0+), and I'm facing an issue where the system dialog still shows the "Save to another device" option during Passkey registration. I want to hide this option to force users to create Passkeys only on the current device. 1. My Current Registration Implementation Here’s the code I’m using to create a Passkey registration request. I’ve tried to use ASAuthorizationPlatformPublicKeyCredentialProvider (which is supposed to target platform authenticators like Face ID/Touch ID), but the "Save to another device" option still appears: `// Initialize provider for platform authenticators let provider = ASAuthorizationPlatformPublicKeyCredentialProvider(relyingPartyIdentifier: domain) // Create registration request let registrationRequest = provider.createCredentialRegistrationRequest( challenge: challenge, name: username, userID: userId ) // Optional configurations (tried these but no effect on "another device" option) registrationRequest.displayName = "Test Device" registrationRequest.userVerificationPreference = .required registrationRequest.attestationPreference = .none // Set up authorization controller let authController = ASAuthorizationController(authorizationRequests: [registrationRequest]) let delegate = PasskeyRegistrationDelegate(completion: completion) authController.delegate = delegate // Trigger the registration flow authController.performRequests(options: .preferImmediatelyAvailableCredentials)` 2. Observation from Authentication Flow (Working as Expected) During the Passkey authentication flow (not registration), I can successfully hide the "Use another device" option by specifying allowedCredentials in the ASAuthorizationPlatformPublicKeyCredentialAssertionRequest. Here’s a simplified example of that working code: let assertionRequest = provider.createCredentialAssertionRequest(challenge: challenge) assertionRequest.allowedCredentials = allowedCredentials After adding allowedCredentials, the system dialog no longer shows cross-device options—this is exactly the behavior I want for registration. 3. My Questions Is there a similar parameter to allowedCredentials (from authentication) that I can use during registration to hide the "Save to another device" option? Did I miss any configuration in the registration request (e.g., authenticatorAttachment or other properties) that forces the flow to use only the current device’s platform authenticator? Are there any system-level constraints or WebAuthn standards I’m overlooking that cause the "Save to another device" option to persist during registration? Any insights or code examples would be greatly appreciated!
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335
Oct ’25
Inquiry on Automatic Passkey Upgrades in iOS 26
Hi everyone, I’m working on adapting our app to iOS 26’s new passkey feature, specifically Automatic Passkey Upgrades. https://developer.apple.com/videos/play/wwdc2025/279/ Our app already supports passkey registration and authentication, which have been running reliably in production. We’d like to extend passkey coverage to more users. According to the WWDC session, adding the parameter requestStyle: .conditional to createCredentialRegistrationRequest should allow the system to seamlessly upgrade an account with a passkey. However, in my testing, I consistently receive the following error: Error | Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1001 "(null)" Test environment: Xcode 26.0 beta 4 (17A5285i) iPhone 11 running iOS 26.0 (23A5297n) Questions: Is the Automatic Passkey Upgrades feature currently available in iOS 26? I understand that the system may perform internal checks and not all upgrade attempts will succeed. However, during development, is there a way to obtain more diagnostic information? At the moment, it’s unclear whether the failure is due to internal validation or an issue with my code or environment. Thanks.
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503
Sep ’25
How can my password manager app redirect users to the “AutoFill Passwords & Passkeys” settings page?
Hi all, I’m building a password manager app for iOS. The app implements an ASCredentialProviderExtension and has the entitlement com.apple.developer.authentication-services.autofill-credential-provider. From a UX perspective, I’d like to help users enable my app under: Settings → General → AutoFill & Passwords What I’ve observed: Calling UIApplication.openSettingsURLString only opens my app’s own Settings page, not the AutoFill list. Some apps (e.g. Google Authenticator) appear to redirect users directly into the AutoFill Passwords & Passkeys screen when you tap “Enable AutoFill.” 1Password goes even further: when you tap “Enable” in 1Password App, it shows a system pop-up, prompts for Face ID, and then enables 1Password as the AutoFill provider without the user ever leaving the app. Questions: Is there a public API or entitlement that allows apps to deep-link users directly to the AutoFill Passwords & Passkeys screen? Is there a supported API to programmatically request that my app be enabled as an AutoFill provider (similar to what 1Password seems to achieve)? If not, what is the recommended approach for guiding users through this flow? Thanks in advance!
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525
Aug ’25
Attesting Secure Enclave-Generated Keys in a WebAuthn Flow
Hello everyone, I'm working on a project where I intend to use Secure Enclave-based, device-bound private keys within a Webauthn flow. I have the following question: Is it possible to generate private keys in the Secure Enclave with integrated attestation in order to reliably prove to a relying party the authenticity and uncompromised state of the key? If so, I would appreciate details on the implementation—specifically, any prerequisites, limitations, or particular API calls and configuration options that need to be considered. I look forward to any advice, best practices, or pointers to further documentation on this topic. Thank you in advance for your support! Best regards, Alex
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168
Apr ’25
DeviceCheck - Device Validation Endpoint not working
We have been having very high response times in device check device validation service (https://developer.apple.com/documentation/devicecheck/accessing-and-modifying-per-device-data#Create-the-payload-for-a-device-validation-request) since 17 July at 19:10hs GMT. The service information page says the service was running in green status but that isn't the case and we currenly have stop consuming it. Is it being looked at? Are you aware of this issue? Can you give us an estimate of when it should be working correctly?
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1
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807
Activity
Jul ’25
Help with Entitlements for Keychain Access
Hi everyone, I’m working an Objective-C lib that performs Keychain operations, such as generating cryptographic keys and signing data. The lib will be used by my team in a Java program for macOS via JNI. When working with the traditional file-based Keychain (i.e., without access control flags), everything works smoothly, no issues at all. However, as soon as I try to generate a key using access control flags SecAccessControlCreateWithFlags, the Data Protection Keychain returns error -34018 (errSecMissingEntitlement) during SecKeyCreateRandomKey. This behavior is expected. To address this, I attempted to codesign my native dynamic library (.dylib) with an entitlement plist specifying various combinations of: keychain-access-groups com.apple.security.keychain etc. with: My Apple Development certificate Developer ID Application certificate Apple Distribution certificate None of these combinations made a difference, the error persists. I’d love to clarify: Is it supported to access Data Protection Keychain / Secure Enclave Keys in this type of use case? If so, what exact entitlements does macOS expect when calling SecKeyCreateRandomKey from a native library? I’d really appreciate any guidance or clarification. Thanks in advance! Best regards, Neil
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1
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421
Activity
Jul ’25
How to get the macOS user login Password requirements in Swift
Hi Team, How can we fetch the macOS password requirement(for setting a new password) that are inforce during login for users? Is there a way to get this info in swift programming?
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1
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742
Activity
Jul ’25
Screen Not Locking with authenticate in Screensaver
I modified the system.login.screensaver rule in the authorization database to use "authenticate" instead of "use-login-window-ui" to display a custom authentication plugin view when the screensaver starts or the screen locks. However, I noticed an issue when the "Require Password after Display is Turned Off" setting is set to 5 minutes in lock screen settings: If I close my Mac’s lid and reopen it within 5 minutes, my authentication plugin view is displayed as expected. However, the screen is not in a locked state—the desktop remains accessible, and the black background that typically appears behind the lock screen is missing. This behavior differs from the default lock screen behavior, where the screen remains fully locked, and the desktop is hidden. Has anyone encountered this issue before? Is there a way to ensure the screen properly locks when using authenticate in the screensaver rule?
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1
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235
Activity
Apr ’25
How can I determine if an application is using an external device
For security reasons, my application needs to prohibit external devices. If it is determined that the current phone is connected to any external devices, including non MFI authenticated devices, the app will exit. Please tell me how to do it? Thanks for your help.
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187
Activity
May ’25
Cannot find developer mode in iPhone 16
Cannot find developer mode in iPhone 16. Please help me resolve this
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1.7k
Activity
Jul ’25
Can't open p12 file inside my application
I need to open p12 file from other iOS applications to import private key to my application. My app is set up to be able to open nay file with following 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>CFBundleDocumentTypes</key> <array> <dict> <key>CFBundleTypeName</key> <string>Files</string> <key>LSHandlerRank</key> <string>Default</string> <key>LSItemContentTypes</key> <array> <string>public.item</string> <string>public.data</string> <string>public.content</string> </array> </dict> </array> </dict> </plist> But my don't appear in share dialog from Files or Mail app for example. There are however other third party apps that can accept this file. Some of them use Share extension which I don't have, but some of them don't have it as far as I can understand. At least they don't present any UI and open apps directly. Also I've tried to specify com.rsa.pkcs-12 UTI directly but it didn't help. Also noticed that *.crt files have similar behaviour. Am I missing something about this specific file type?
Replies
1
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125
Activity
Apr ’25
ASWebAuthenticationSession crash after window closes on macOS
I'm trying to use ASWebAuthenticationSession on macOS but there is a weird crash and I have no idea what to do. It looks like there is a main thread check in a framework code that I have no control over. Any help would be appreciated. Thank you in advance. The stack of crashed thread has no symbols, even for supposedly my code in OAuthClient.authenticate. macOS 15.4.1 (24E263) Xcode Version 16.3 (16E140) Thread 11: EXC_BREAKPOINT (code=1, subcode=0x10039bb04) Thread 12 Queue : com.apple.NSXPCConnection.m-user.com.apple.SafariLaunchAgent (serial) #0 0x0000000100b17b04 in _dispatch_assert_queue_fail () #1 0x0000000100b52834 in dispatch_assert_queue$V2.cold.1 () #2 0x0000000100b17a88 in dispatch_assert_queue () #3 0x000000027db5f3e8 in swift_task_isCurrentExecutorWithFlagsImpl () #4 0x00000001022c7754 in closure #1 in closure #1 in OAuthClient.authenticate() () #5 0x00000001022d0c98 in thunk for @escaping @callee_guaranteed (@in_guaranteed URL?, @guaranteed Error?) -> () () #6 0x00000001c7215a34 in __102-[ASWebAuthenticationSession initWithURL:callback:usingEphemeralSession:jitEnabled:completionHandler:]_block_invoke () #7 0x00000001c72163d0 in -[ASWebAuthenticationSession _endSessionWithCallbackURL:error:] () #8 0x00000001c7215fc0 in __43-[ASWebAuthenticationSession _startDryRun:]_block_invoke_2 () #9 0x0000000194e315f4 in __invoking___ () #10 0x0000000194e31484 in -[NSInvocation invoke] () #11 0x00000001960fd644 in __NSXPCCONNECTION_IS_CALLING_OUT_TO_REPLY_BLOCK__ () #12 0x00000001960fbe40 in -[NSXPCConnection _decodeAndInvokeReplyBlockWithEvent:sequence:replyInfo:] () #13 0x00000001960fb798 in __88-[NSXPCConnection _sendInvocation:orArguments:count:methodSignature:selector:withProxy:]_block_invoke_3 () #14 0x0000000194a6ef18 in _xpc_connection_reply_callout () #15 0x0000000194a6ee08 in _xpc_connection_call_reply_async () #16 0x0000000100b3130c in _dispatch_client_callout3_a () #17 0x0000000100b362f8 in _dispatch_mach_msg_async_reply_invoke () #18 0x0000000100b1d3a8 in _dispatch_lane_serial_drain () #19 0x0000000100b1e46c in _dispatch_lane_invoke () #20 0x0000000100b2bfbc in _dispatch_root_queue_drain_deferred_wlh () #21 0x0000000100b2b414 in _dispatch_workloop_worker_thread () #22 0x0000000100c0379c in _pthread_wqthread () My code: @MainActor func authenticate() async throws { let authURL = api.authorizationURL( scopes: scopes, state: state, redirectURI: redirectURI ) let authorizationCodeURL: URL = try await withUnsafeThrowingContinuation { c in let session = ASWebAuthenticationSession(url: authURL, callback: .customScheme(redirectScheme)) { url, error in guard let url = url else { c.resume(throwing: error ?? Error.unknownError("Failed to get authorization code")) return } c.resume(returning: url) } session.presentationContextProvider = presentationContextProvider session.start() } let authorizationCode = try codeFromAuthorizationURL(authorizationCodeURL) (storedAccessToken, storedRefreshToken) = try await getTokens(authorizationCode: authorizationCode) } Here is disassembly of the crashed function. libdispatch.dylib`_dispatch_assert_queue_fail: 0x10067fa8c <+0>: pacibsp 0x10067fa90 <+4>: sub sp, sp, #0x50 0x10067fa94 <+8>: stp x20, x19, [sp, #0x30] 0x10067fa98 <+12>: stp x29, x30, [sp, #0x40] 0x10067fa9c <+16>: add x29, sp, #0x40 0x10067faa0 <+20>: adrp x8, 71 0x10067faa4 <+24>: add x8, x8, #0x951 ; "not " 0x10067faa8 <+28>: adrp x9, 70 0x10067faac <+32>: add x9, x9, #0x16b ; "" 0x10067fab0 <+36>: stur xzr, [x29, #-0x18] 0x10067fab4 <+40>: cmp w1, #0x0 0x10067fab8 <+44>: csel x8, x9, x8, ne 0x10067fabc <+48>: ldr x10, [x0, #0x48] 0x10067fac0 <+52>: cmp x10, #0x0 0x10067fac4 <+56>: csel x9, x9, x10, eq 0x10067fac8 <+60>: stp x9, x0, [sp, #0x10] 0x10067facc <+64>: adrp x9, 71 0x10067fad0 <+68>: add x9, x9, #0x920 ; "BUG IN CLIENT OF LIBDISPATCH: Assertion failed: " 0x10067fad4 <+72>: stp x9, x8, [sp] 0x10067fad8 <+76>: adrp x1, 71 0x10067fadc <+80>: add x1, x1, #0x8eb ; "%sBlock was %sexpected to execute on queue [%s (%p)]" 0x10067fae0 <+84>: sub x0, x29, #0x18 0x10067fae4 <+88>: bl 0x1006c258c ; symbol stub for: asprintf 0x10067fae8 <+92>: ldur x19, [x29, #-0x18] 0x10067faec <+96>: str x19, [sp] 0x10067faf0 <+100>: adrp x0, 71 0x10067faf4 <+104>: add x0, x0, #0x956 ; "%s" 0x10067faf8 <+108>: bl 0x1006b7b64 ; _dispatch_log 0x10067fafc <+112>: adrp x8, 108 0x10067fb00 <+116>: str x19, [x8, #0x2a8] -> 0x10067fb04 <+120>: brk #0x1
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162
Activity
May ’25
Detecting iOS screen sharing
Hello, Is there any way to detect if the iOS screen is currently being shared via FaceTime or iPhone Mirroring? Our application relies on this information to help ensure that users are not accessing it from one location while physically being in another.
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224
Activity
Jul ’25
Yubikey Authentication iPad/iOS26
Hey all, Question for the masses.... Does the Yubikey authentication have a OS dependency and it only works with a stable, public OS? Does Azure/Okta/Yubikey beta OS26? My CEO installed iPadOS 26 on his iPad and was not able to authenticate via Yubikey into our company environment. I ran the same scenario on my iPad using iPadOS 26 and I had the same results. Downgrading to iPAdOS doesn't pose these issues. I'm assuming something isn't fine-tuned yet?
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1
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419
Activity
Aug ’25
Accessing the key generated by DCAppAttestService
Hi, is it somehow possible to access a key that was generated by the DCAppAttestService generateKey() function? I need to be 100% sure that no actor from within or outside of my app can access the generated key with the DeviceCheck Framework. It would also be helpful to get some official resources to the topic. Thank you in advance, Mike
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1
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328
Activity
Oct ’25
Can you use App Attest in Enterprise Builds?
I'm a bit confused about if using App Attest is possible in enterprise builds. It shows up under identifiers in the apple dev portal and I can add it to my provisioning file and entitlements file. But if I go to keys I cannot create a key for it. This page implies it can be used for enterprise builds: After distributing your app through TestFlight, the App Store, or the Apple Developer Enterprise Program, your app ignores the entitlement you set and uses the production environment.
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323
Activity
May ’25
passkey in iOS via iCloudKeyChain
I have a very basic binary question around passkeys. Assuming everything is on latest and greatest version with respect to iOS, when user starts creating a passkey in platform-authenticator i.e., iCloudKeyChain (Apple Password Manager) , will iCloudKeyChain create a hardware-bound passkey in secure-enclave i.e., is brand new key-pair created right inside Secure-enclave ? OR will the keypair be created in software i.e., software-bound-passkey ?? i.e., software-bound keypair and store the private-key locally in the device encrypted with a key that is of course created in secure-enclave.
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171
Activity
May ’25
How to verify Apple signed firmware, hardware, and OS authenticity in an SDK?
I am working on a SDK which helps identify the device authenticity. I am in need of something which can confirm the firmware/Hardware/OS is signed by Apple and is authentic. There will be no tempering to device?
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1
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139
Activity
May ’25
App IPA upgrade loses access to keychaingroup
Hi, Our App relies on a keychain to store certificates and key-value pairs. However, when we upgraded from an older XCode 15.2 (1 year old) app version to a newer version XCode 16.2 (with identical keychain-groups entitlement), we found that the newer ipa cannot see the older keychain group anymore... We tried Testflight builds, but limited to only generating newer versions, we tried using the older App's code, cast as a newer App version, and then upgraded to the newer code (with an even newer app version!). Surprisingly we were able to see the older keychain group. So it seems that there's something different between the packaging/profile of the older (1 year) and newer (current) App versions that seems to cause the new version to not see the old keychainGroup... Any ideas?
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204
Activity
Aug ’25
Issues with Password based Platform SSO
We are using Apple's PSSO to federate device login to out own IdP. We have developed our own extension app and deployed it using MDM. Things works fine but there are 2 issues that we are trying to get to the root cause - On some devices after restarting we see an error message on the logic screen saying "The registration for this device is invalid and must be repaired" And other error message is "SmartCard configuration is invalid for this account" For the 1st we have figured out that this happens when the registration doesn't happen fully and the key is not tied to the user so when the disk needs to be decrypted at the FileVault screen the issue is raised. For the "SmartCard configuration is invalid for this account" issue also one aspect is invalid registration but there has been other instances as well where the devices were registered completely but then also the the above error was raised. We verified the registration being completed by checking if the SmartCard is visible in the System Report containing the key. Has anyone seen the above issues and any possible resolution around it?
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215
Activity
Oct ’25
How to Hide the "Save to Another Device" Option During Passkey Registration?
I'm working on integrating Passkey functionality into my iOS app (targeting iOS 16.0+), and I'm facing an issue where the system dialog still shows the "Save to another device" option during Passkey registration. I want to hide this option to force users to create Passkeys only on the current device. 1. My Current Registration Implementation Here’s the code I’m using to create a Passkey registration request. I’ve tried to use ASAuthorizationPlatformPublicKeyCredentialProvider (which is supposed to target platform authenticators like Face ID/Touch ID), but the "Save to another device" option still appears: `// Initialize provider for platform authenticators let provider = ASAuthorizationPlatformPublicKeyCredentialProvider(relyingPartyIdentifier: domain) // Create registration request let registrationRequest = provider.createCredentialRegistrationRequest( challenge: challenge, name: username, userID: userId ) // Optional configurations (tried these but no effect on "another device" option) registrationRequest.displayName = "Test Device" registrationRequest.userVerificationPreference = .required registrationRequest.attestationPreference = .none // Set up authorization controller let authController = ASAuthorizationController(authorizationRequests: [registrationRequest]) let delegate = PasskeyRegistrationDelegate(completion: completion) authController.delegate = delegate // Trigger the registration flow authController.performRequests(options: .preferImmediatelyAvailableCredentials)` 2. Observation from Authentication Flow (Working as Expected) During the Passkey authentication flow (not registration), I can successfully hide the "Use another device" option by specifying allowedCredentials in the ASAuthorizationPlatformPublicKeyCredentialAssertionRequest. Here’s a simplified example of that working code: let assertionRequest = provider.createCredentialAssertionRequest(challenge: challenge) assertionRequest.allowedCredentials = allowedCredentials After adding allowedCredentials, the system dialog no longer shows cross-device options—this is exactly the behavior I want for registration. 3. My Questions Is there a similar parameter to allowedCredentials (from authentication) that I can use during registration to hide the "Save to another device" option? Did I miss any configuration in the registration request (e.g., authenticatorAttachment or other properties) that forces the flow to use only the current device’s platform authenticator? Are there any system-level constraints or WebAuthn standards I’m overlooking that cause the "Save to another device" option to persist during registration? Any insights or code examples would be greatly appreciated!
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335
Activity
Oct ’25
Inquiry on Automatic Passkey Upgrades in iOS 26
Hi everyone, I’m working on adapting our app to iOS 26’s new passkey feature, specifically Automatic Passkey Upgrades. https://developer.apple.com/videos/play/wwdc2025/279/ Our app already supports passkey registration and authentication, which have been running reliably in production. We’d like to extend passkey coverage to more users. According to the WWDC session, adding the parameter requestStyle: .conditional to createCredentialRegistrationRequest should allow the system to seamlessly upgrade an account with a passkey. However, in my testing, I consistently receive the following error: Error | Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1001 "(null)" Test environment: Xcode 26.0 beta 4 (17A5285i) iPhone 11 running iOS 26.0 (23A5297n) Questions: Is the Automatic Passkey Upgrades feature currently available in iOS 26? I understand that the system may perform internal checks and not all upgrade attempts will succeed. However, during development, is there a way to obtain more diagnostic information? At the moment, it’s unclear whether the failure is due to internal validation or an issue with my code or environment. Thanks.
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503
Activity
Sep ’25
How can my password manager app redirect users to the “AutoFill Passwords & Passkeys” settings page?
Hi all, I’m building a password manager app for iOS. The app implements an ASCredentialProviderExtension and has the entitlement com.apple.developer.authentication-services.autofill-credential-provider. From a UX perspective, I’d like to help users enable my app under: Settings → General → AutoFill & Passwords What I’ve observed: Calling UIApplication.openSettingsURLString only opens my app’s own Settings page, not the AutoFill list. Some apps (e.g. Google Authenticator) appear to redirect users directly into the AutoFill Passwords & Passkeys screen when you tap “Enable AutoFill.” 1Password goes even further: when you tap “Enable” in 1Password App, it shows a system pop-up, prompts for Face ID, and then enables 1Password as the AutoFill provider without the user ever leaving the app. Questions: Is there a public API or entitlement that allows apps to deep-link users directly to the AutoFill Passwords & Passkeys screen? Is there a supported API to programmatically request that my app be enabled as an AutoFill provider (similar to what 1Password seems to achieve)? If not, what is the recommended approach for guiding users through this flow? Thanks in advance!
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525
Activity
Aug ’25
Attesting Secure Enclave-Generated Keys in a WebAuthn Flow
Hello everyone, I'm working on a project where I intend to use Secure Enclave-based, device-bound private keys within a Webauthn flow. I have the following question: Is it possible to generate private keys in the Secure Enclave with integrated attestation in order to reliably prove to a relying party the authenticity and uncompromised state of the key? If so, I would appreciate details on the implementation—specifically, any prerequisites, limitations, or particular API calls and configuration options that need to be considered. I look forward to any advice, best practices, or pointers to further documentation on this topic. Thank you in advance for your support! Best regards, Alex
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168
Activity
Apr ’25