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Enterprise App Installation Fails on iOS 18.5 with Integrity Error
I am a developer distributing an enterprise app. Recently, some users have intermittently encountered an error message on iOS 18.5 stating: "Unable to install this app because its integrity could not be verified." While the issue could not be reproduced on iPhone 15 / iOS 18.5, we have received reports that it does occur on the following devices: iPhone 14 / iOS 18.5, iPhone 14 Pro / iOS 18.5, iPhone 14 Plus / iOS 18.5, iPhone 16 Pro Max / iOS 18.5, Are there any known issues or recommended solutions regarding this behavior? Thank you in advance for your assistance.
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167
Jun ’25
Question on using Apple TTS voice (commercial use and license)
Apple provides a function to create TTS voice as a file in TTS. (AVSpeechUtterance/AVSpeechSynthesizer) Or, if the user records the video of TTS playback and uses that video I wonder what the scope of use is if I use this TTS voice to make YouTube, TikTok, or commercial videos. Is it impossible to use it commercially at all? Can I use it commercially with the source indicated? Can I use it commercially without a separate source indication? Is there a difference in commercial use license between Siri voices and regular TTS voices?
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396
Mar ’25
CNContact instantMessage field duplicates after serializaiton/deserialization
Hello folks, I stumbled upon a weird CNContact serialization problem. I use the Contacts framework to update the AIM field, which is one of the instantMessageAddresses within a single Contact. Here is the simplified code I used: func updateAIMFieldOn(contact: CNContact, aimValue: String) { do { guard let mutableContact = contact.mutableCopy() as? CNMutableContact else { logger.error("[CM] Couldn't update contact with aim \(aimValue)") return } var updatedAddresses = mutableContact.instantMessageAddresses updatedAddresses.append(CNLabeledValue(label: "", value: CNInstantMessageAddress(username: aimValue, service: CNInstantMessageServiceAIM))) mutableContact.instantMessageAddresses = updatedAddresses let saveRequest = CNSaveRequest() saveRequest.update(mutableContact) try CNContactStore().execute(saveRequest) logger.verbose("Contact's AIM updated successfully!") } catch { logger.error("Couldn't update contact") } } And after serializing the contact to data, and then deserializing, the contact got two AIM fields with the same value: X-AIM;type=pref:some:part:of_my_aim_value IMPP;X-SERVICE-TYPE=AIM;type=pref:some:part:of_my_aim_value Why does it work in this manner? Is it possible that ":" char causes that? Format of my aim username is {some:part:of_my_aim_value}. I didn't find any information in the docs. Thanks!
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719
Jun ’25
I would like to work with developers I believe I have rights to share.
Three months ago I molded a mold program. I believe could be tweaked and tried unlined zero code. swear. anyway I would like to scale with some people if I can go to commercial area code phoned series and calls.and if I have rights. but my next moves for them. on iOS I think they should have a seri settings. where they can call seri.on settings, and it jump many codes-and navigation is hard. plus I think seri can help in settings expecially since seri settings is verbal drop. if the words fit or are similar it cues goes to but you have to hard call the switch.so there’s no hey no Sami where you setting no Sammy right I think it could skip cauldron and everything verbally either. Seri settings I think iOS should try it.
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127
Jun ’25
macOS ACME certificate not appearing in System Keychain
Finally got to the stage where the ACME certificate profile is successfully installed. However, the public key/certificate itself isn't appearing in the System Keychain. I'm not sure if this is normal or if it's an indication that something went wrong after the profile installation. Unfortunately, I didn't study the log detail at the time and I'm uncertain of how to retrieve those logs from two days ago for the ACME activities. Can anyone confirm that macOS 26 should be storing ACME-retrieved MDM profile-based certificates in the System Keychain? If they should be there, what can possibly go wrong? The most obvious issue I can see is that the ACME server has requested the certificate with two CN's, which comes from the MDM profile asking for the subject against CN and the OID (2.5.4.3). Both CN's are identical. I'm surprised the profile installed if something is wrong. At first, I assumed Apple had decided to stop installing the certificates into the System Keychain.
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665
Jul ’25
Return to Service with App Preservation issue
We are implementing the Return to Service (RTS) with App Preservation flow. During testing, we were able to successfully fetch the Bootstrap Token as part of the ADE enrollment process. However, when attempting to initiate the Return to Service command with App Preservation enabled, the following error was returned: [ { "ErrorCode": 12089, "ErrorDomain": "MDMErrorDomain", "LocalizedDescription": "Could not erase device.", "USEnglishDescription": "Could not erase device." }, { "ErrorCode": 66002, "ErrorDomain": "MDMBootstrapTokenErrorDomain", "LocalizedDescription": "Failed to generate LAContext for bootstrap token", "USEnglishDescription": "Failed to generate LAContext for bootstrap token" } ] Below is the sample request (with dummy data). The actual request contained valid values in all fields: <?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>Command</key> <dict> <key>RequestType</key> <string>EraseDevice</string> <key>ReturnToService</key> <dict> <key>Enabled</key> <true /> <key>WiFiProfileData</key> <data>WiFiProfileData</data> <key>BootstrapToken</key> <data>BootstrapTokenValue</data> <key>MDMProfileData</key> <data>MDM Profile Data</data> </dict> </dict> <key>CommandUUID</key> <string>3670</string> </dict> </plist>
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933
Nov ’25
Can't execute Software Update:Enforcement:Specific on ADE Macbook
I have enrolled a macbook through ADE to Apple School Manager and register it to the MDM service. Upon sending the initial DeclarativeManagement payload, the device return the client capabilities as below: "supported-versions": [ "1.0.0" ], "supported-payloads": { "declarations": { "activations": [ "com.apple.activation.simple" ], "assets": [ "com.apple.asset.credential.acme", "com.apple.asset.credential.certificate", "com.apple.asset.credential.identity", "com.apple.asset.credential.scep", "com.apple.asset.credential.userpassword", "com.apple.asset.data", "com.apple.asset.useridentity" ], "configurations": [ "com.apple.configuration.account.caldav", "com.apple.configuration.account.carddav", "com.apple.configuration.account.exchange", "com.apple.configuration.account.google", "com.apple.configuration.account.ldap", "com.apple.configuration.account.mail", "com.apple.configuration.account.subscribed-calendar", "com.apple.configuration.legacy", "com.apple.configuration.legacy.interactive", "com.apple.configuration.management.status-subscriptions", "com.apple.configuration.management.test", "com.apple.configuration.math.settings", "com.apple.configuration.passcode.settings", "com.apple.configuration.safari.extensions.settings", "com.apple.configuration.screensharing.connection", "com.apple.configuration.screensharing.connection.group", "com.apple.configuration.security.certificate", "com.apple.configuration.security.identity", "com.apple.configuration.security.passkey.attestation" ], "management": [ "com.apple.management.organization-info", "com.apple.management.properties", "com.apple.management.server-capabilities" ] }, "status-items": [ "account.list.caldav", "account.list.carddav", "account.list.exchange", "account.list.google", "account.list.ldap", "account.list.mail.incoming", "account.list.mail.outgoing", "account.list.subscribed-calendar", "device.identifier.serial-number", "device.identifier.udid", "device.model.family", "device.model.identifier", "device.model.marketing-name", "device.model.number", "device.operating-system.build-version", "device.operating-system.family", "device.operating-system.marketing-name", "device.operating-system.supplemental.build-version", "device.operating-system.supplemental.extra-version", "device.operating-system.version", "management.client-capabilities", "management.declarations", "screensharing.connection.group.unresolved-connection", "security.certificate.list", "test.array-value", "test.boolean-value", "test.dictionary-value", "test.error-value", "test.integer-value", "test.real-value", "test.string-value" ] }, "supported-features": { } } }, com.apple.configuration.softwareupdate.enforcement.specific couldn't be found. The macbook current OS version is 15.5 and it's supervised so looking at this, I assume it should include the Software Update:Enforcement:Specific capability? https://github.com/apple/device-management/blob/release/declarative/declarations/configurations/softwareupdate.enforcement.specific.yaml When I tried sending the payload to the device anyway the valid status is unknown
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156
Jul ’25
Can mdm contain configurations that are not supported by the system version?
Hi,team: I need to distribute an mdm configuration file containing the "ServiceManagementManagedLoginItems" service to a large number of company-supervised computers, where com.apple.servicemanagement only supports macOS 13.0+. However, I cannot effectively distinguish whether the device system where the mdm configuration file needs to be installed is greater than 13. Can I directly install the mdm configuration file on all devices? Will installing the mdm configuration file on devices less than 13 have any impact on the system or other configuration items in mdm? The description link of ServiceManagementManagedLoginItems is: https://developer.apple.com/documentation/devicemanagement/servicemanagementmanagedloginitems
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251
Mar ’25
IOS 18.3.2(22D82) Enterprise signature installation package crashes
Recently, we have encountered some users who have been unable to open the enterprise signature application after upgrading to version 18.3.2, without an IPS file. Through system logs, we found that signature verification has occurred SecKeyVerifySignature failed: Error Domain=NSOSStatusErrorDomain Code=-50 "rsa_pub_crypt failed, ccerr=-7" UserInfo={numberOfErrorsDeep=0, NSDescription=rsa_pub_crypt failed, ccerr=-7} Waiting for the information, I will provide the obtained system logs below. The application package name that crashed is com. mobile. moonew
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196
Mar ’25
AppLock payload - Need network change option
Managed iOS/iPad devices are struck with no network under below conditions Enrolling a Supervised iOS device Send InstallProfile command with AppLock payload (https://developer.apple.com/documentation/devicemanagement/applock) Now when the above managed device loses network connection with MDM server due to unknown network issues - the device is out of contact with MDM server and device is locked. Since such AppLock payload installed devices are placed in remote locations, it becomes difficult for Admins to recover such devices with no network connectivity. The devices have to be brought in from remote location and recover them. Under such conditions, it would be better to allow the end user to change the Network configuration manually to reconnect the device with MDM server. This option can also be allowed only when the device can’t ping MDM server.
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550
Jan ’25
Apps and Books for Organizations API – Reliability Issues, Feature Request, and Rate Limit Clarification
Hi Apple team and community, We’re currently integrating with the Apps and Books for Organizations API as part of our device management solution and would like to highlight a few critical points we've encountered — including a reliability issue, an enhancement suggestion, and a request for clarification on API rate limits. 1. Issue: Intermittent 403 Errors with stoken-authenticated-apps Endpoint We are encountering intermittent 403 Forbidden responses from the stoken-authenticated-apps endpoint. Approximately 30–35% of the requests fail with a 403 status code. These failures are inconsistent — the same request (using the same Content Token and Storefront) may succeed upon retry. All requests are properly authenticated and include the required Cookie and other headers as specified in the API documentation. This issue is impacting our ability to reliably fetch app metadata at scale, particularly in workflows. We’d like to know: Is this a known issue? Could it be due to a rate limit or token misconfiguration? Are any changes required on our end to avoid these failures? 2. Enhancement Request: Include externalVersionId in versionHistory Response The versionHistory extension currently returns: versionString releaseNotes releaseDate However, for Declarative Device Management (DDM) workflows such as App Pinning, we need the externalVersionId as well. Without it, we can't reliably correlate version metadata with the specific version ID required for pinning. Adding externalVersionId would: Enable precise version targeting during App Pinning Improve reliability and automation in managed deployments We request that Apple consider including externalVersionId in the versionHistory response to better support DDM-based app lifecycle management. 3. Rate Limit Clarification We found the following note in the Apps and Books for Organizations API documentation: "The Apps and Books for Organizations API limits the number of requests your app can make using a developer token within a specific period of time. If you exceed this limit, you’ll temporarily receive 429 Too Many Requests error responses for requests that use the token. This error resolves itself shortly after the request rate has reduced." While this confirms that a rate limit is enforced, there is no detailed information about the thresholds — such as the number of allowed requests per minute, hour, or day per developer token. To help us implement proper throttling and retry strategies, we request clarification on the following: What is the exact rate limit threshold per developer token? Are there per-endpoint limits, or is it a global cap for all requests using the token? Does the API return a Retry-After header when the limit is exceeded? What is the recommended backoff strategy for clients to follow when receiving 429 errors? This information would help us implement efficient throttling and error handling logic. Any insights from the Apple team or other developers who’ve encountered these issues would be greatly appreciated!
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1.2k
Jul ’25
Enterprise App Crashes on Launch on iOS 18.3.2
We have an office application used internally within our enterprise. The Provisioning Profiles (PP) for the app were about to expire, so we updated the PP and released a new version. However, we've encountered an issue where some users did not update their phones in time. After the app expired, they found it unusable and downloaded the new version, but the newly downloaded app also crashes on launch. Restarting the phone does not resolve the issue, and this primarily occurs on iOS 18.3.2. What could be the cause of this problem, and how should we address it?
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188
Mar ’25
Unable to get inbound and outbound byte count in Content Filter report.
Hello, I am building a Content Filter app for iOS and would like to get access to some information about network connections that are happening on the device. I managed to have the handle(_ report: NEFilterReport) method of my NEFilterControlProvider called, but the bytesOutboundCount and bytesInboundCount properties of the report are always 0. How can I have the real byte count of the connection ?
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1.2k
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reference preinstalled certificate keypair from an MDM profile
For additional security we would like to avoid keeping generated certificates (their private keys) on our server after installing them on a device, but still be able to reference them in later installed configuration profiles via MDM. However, it seems that for a configuration profile's payload to use a certificate (e.g. VPN payload), the certificate payload must be present in the same profile. Are we missing anything, perhaps it's already possible somehow? Ideal workflow for us would be: our MDM server generates a certificate (private+public keys) for a given device our MDM server sends this certificate to the device as configuration profile and saves PayloadUUID of the certificate's payload our MDM server deletes the generated private key from its storage. At this point the private key is present only on the device. at some point in the future our MDM server sends a configuration profile that references the certificate from step 2 via the saved PayloadUUID (e.g. using key PayloadCertificateUUID in a VPN payload) Current result: device responds to MDM server with error "The profile “VPN” could not be installed. Certificates needed for the VPN service “VPN” are invalid." Desired result: device is able to find the previously installed certificate via its PayloadUUID. Alternatively, it could be certificate fingerprint or something similar. One more alternative could be to replace steps 1-3 by an app on the device that obtains a certificate (in any way), installs it to device as a configuration profile, passes the certificate's PayloadUUID to our MDM server and then doing step 4.
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