My MacBook Pro M5 running MacOS Tahoe 26.3 beta fails to detect two identical ASUS ROG Swift OLED PG32UCDM monitors simultaneously. Only one display is recognized at a time. One potential root cause might be that both monitors report identical binary EDID serial numbers (0x01010101), and the MacBook Pro M5 appears to use this value exclusively for display identity rather than combining it with other more detailed information (e.g., port, or alphanumeric serial number). I've verified that the monitor EDID binary serial numbers are in fact identical -- however the alphanumerical serial numbers are not identical. NOTE: This behavior is specific to the MacBook Pro M5 — when connecting both monitors via usb-c to a Mac Mini M4 Pro running the same MacOS Tahoe 26.3 beta, the monitors work fine. The OS detects both and assigns different names to them (PG32UCDM (1) and PG32UCDM (2)). NOTE: I could be wrong about this root cause, I don't have a way to disprove it, though the fact the monitors work fine on a Mac Mini is suspicious. What I have tried: Connecting the two monitors using different monitor ports (one on DisplayPort, another on HDMI, etc.), and different MacBook ports (one on HDMI, another on USB-C, etc.) Bumping down the resolution on the monitors to "1920x1080 (low resolution)" and 30Hz to rule out bandwidth issues. Connecting one, or both, monitors to CalDigit TS5 Plus dock. Neither alternate configuration yields the device recognizing both screens. Using BetterDisplay to import a manually-edited EDID for the screen, with a different binary EDID value, manufacturer name, etc. I've also verified that if I plug in my Apple Studio Display as one of the monitors, then the MacBook recognizes both one of the PG32UCDM monitors and the Studio Display at the same time. The issue seems to occur only when both monitors plugged into it are the same PG32UCDM model. When I have both monitors plugged into my MacBook, each time I disconnect the cable to whichever monitor is currently recognized, it immediately recognizes the other monitor. Plugging the cable for the disconnected monitor back in has no effect. I'm at a loss. Has anyone run into this issue and found a successful workaround that is not one of the approaches I've described above?

1/ Issue Summary In our application, we use HKObserverQuery together with:HKHealthStore.enableBackgroundDelivery(for:frequency: .immediate) to enable HealthKit Background Delivery, allowing the system to wake our App Extension in the background to process health data updates. Under the same app build, identical HealthKit permission configuration, and the same watchOS version, we have observed significant differences in background delivery frequency across different devices. Specifically, on certain devices (e.g. Apple Watch Series 10, watchOS 26.2.1), the background delivery frequency is significantly reduced, behaving as if it is capped at approximately once per hour. On other control devices, under the same configuration, background delivery is triggered much more frequently and consistently, at approximately every 8–16 minutes. This behavior is consistently reproducible on the affected devices. **We would like to understand whether there are any officially recommended implementation patterns, best practices, or device-/system-level considerations when using HKObserverQuery and Background Delivery, in order to achieve more consistent and predictable background update behavior across different devices running the same system version. ** 2/ Detailed Device Comparison We conducted internal comparison testing across multiple devices with the following results: Device A (Affected / Abnormal) Model: Apple Watch Series 10 (46mm) OS: watchOS 26.2.1 Serial (partial): C*HY Background Delivery Frequency: ~ once every 60 minutes (significantly lower than expected) Device B (Normal) Model: Apple Watch Series 10 (42mm) OS: watchOS 26.2.1 Serial (partial): G*4R Background Delivery Frequency: ~ every 8–16 minutes Device C (Normal) Model: Apple Watch Series 8 (41mm) OS: watchOS 26.3 Serial (partial): C*J6 Background Delivery Frequency: ~ every 8–16 minutes Device D (Normal) Model: Apple Watch Series 5 (41mm) OS: watchOS 10.6.1 Serial (partial): G*TQ Background Delivery Frequency: ~ every 8–16 minutes All devices share the following conditions: HealthKit permissions: Full read/write permissions granted Background App Refresh: Enabled System state: Low Power Mode, Do Not Disturb, and all Focus modes disabled App build: Identical app build installed on all devices HealthKit configuration: Same data types and same frequency parameter used in enableBackgroundDelivery Implementation: Identical HKObserverQuery implementation logic 3/ Abnormal Behavior Observed On the affected device(s), we observe that: HealthKit background delivery appears to be heavily coalesced or throttled The system rarely attempts to wake the App Extension Behavior is clearly inconsistent with other devices using the same configuration The behavior does not match our expectations for HealthKit Background Delivery with .immediate frequency 4/ Troubleshooting Already Performed We have already attempted the following on the affected device(s): Restarted both Apple Watch and paired iPhone Re-paired the Apple Watch Uninstalled and reinstalled the app Revoked and re-granted HealthKit permissions Confirmed that Low Power Mode, Do Not Disturb, and Focus modes are all disabled The issue remains consistently reproducible. 5/ Assistance Requested We would appreciate guidance on: Whether there are any officially recommended implementation patterns, tuning options, or best practices for using HKObserverQuery and HealthKit Background Delivery Whether there are any known device-level or system-level factors that may cause significantly different background delivery behavior on different devices running the same watchOS version How to best achieve consistent and predictable background update delivery behavior across devices for apps that rely on this mechanism 6/ Additional Information We can provide sysdiagnose logs from both affected and unaffected devices for comparison We can also provide a minimal reproducible sample project if needed

I’m seeing an issue with CloudKit sharing in iOS 26.2.1: When I call CKShare(rootRecord:) with a brand-new record in a fresh custom zone, the share is created with no root attached (rootFromShare == nil). After saving both the root and share in a single CKModifyRecordsOperation, fetching the share from the server still shows no root reference (rootRecordID == nil). No errors are thrown, but sharing simply fails. Key facts: • Custom zone created and confirmed (sharing enabled, capsRaw=7/15) • Brand-new record type and fresh IDs each run • Never reusing records or shares • Saving both root and share together in one operation • No default zone usage; always custom private zone Tested: • Multiple devices, iCloud accounts, and app versions • Both simulator and physical device Debug logs consistently show: • SHARE_CREATE_SHARE_LOCAL ... rootFromShare=nil • After save/fetch: rootRecordID=nil on server Has anyone seen this? Is there a new CloudKit regression in iOS 26.x, or am I missing something subtle? Minimal sample project and full debug logs available if needed. Any insights or workarounds would be hugely appreciated!

I understand that private APIs are not permitted under Apple’s App Review Guidelines. However, our application requires I²C communication, and we are currently using the following APIs: IOAVServiceReadI2C IOAVServiceWriteI2C IOI2CSendRequest.These api's are not permitted by apple. I didnt found any alternative public api to achieve I²C communication. please suggest any public api's for the same or any chance to use this private api.

On a MacBook Pro, 16GB of RAM, 500 GB SSD, OS Sequoia 15.7.1, M3 chip, I am running some python3 code in a conda environment that requires lots of RAM and sure enough, once physical memory is almost exhausted, swapfiles of about 1GB each start being created, which I can see in /System/Volumes/VM. This folder has about 470 GB of available space at the start of the process (I can see this through get info) however, once about 40 or so swapfiles are created, for a total of about 40GB of virtual memory occupied (and thus still plenty of available space in VM), zsh kills the python process responsible for the RAM usage (notably, it does not kill another python process using only about 100 MB of RAM). The message received is "zsh: killed" in the tmux pane where the logging of the process is printed. All the documentation I was able to consult says that macOS is designed to use up to all available storage on the startup disk (which is the one I am using since I have only one disk and the available space aforementioned reflects this) for swapping, when physical RAM is not enough. Then why is the process killed long before the swapping area is exhausted? In contrast, the same process on a Linux machine (basic python venv here) just keeps swapping, and never gets killed until swap area is exhausted. One last note, I do not have administrator rights on this device, so I could not run dmesg to retrieve more precise information, I can only check with df -h how the swap area increases little by little. My employer's IT team confirmed that they do not mess with memory usage on managed profiles, so macOS is just doing its thing. Thanks for any insight you can share on this issue, is it a known bug (perhaps with conda/python environments) or is it expected behaviour? Is there a way to keep the process from being killed?

Hi Team, We've been developing our application with the fairly new AlarmKit. We are using the stopIntent to run some quick logic when the user stops the alarms. The stopIntent is a LiveActivityIntent and works well when the user presses the button the dismiss button on the alarm. But unfortunately we've realized some interesting behavior in the following two cases: In case the alarm fires while the user has unlocked their screen and they do things on the screen, the alarm is dismissed (and stopped), but the stopIntent is not executed. In case the alarm fires while the user has unlocked their screen and they swipe up the Live Activity banner, the alarm is also dismissed (and stopped), but again the stopIntent is not executed. I've tried to look up for some information, but could not find anything meaningful for this specific case. We're wondering if that is something that is planned to get fixed in the future, or maybe there's a workaround. We've tried also alternative - listening to alarm updates via the AlarmManager, but we are not very eager to create listener task for it, also the alarm state does not provide updates for dismissed. Thanks!

App out of memory and killed by Jetsam event seems not report to MetricKit diagnostic, it only contains crash or watch dog kill (scene create or scene update). So I want to ask to report these issues to MetricKit

I have to continuously disable Limit IP Tracking on my local Wi-Fi network. When it's enable I am not able to access some services on the same subnet that falls under rfc1918. Accessing remote network, over site to site vpn, is not affected, just my local network. I opened FB21483619 for this. I would expect to see rfc1918 subnets not included. Also would expect all DNS queries to be sent to the servers provided in DHCP.

I'm using a Mac Studio in a homelab context and use Homebrew to manage the installed services. The services include things that access the local network, for example Prometheus which monitors some other servers, a reverse proxy which fronts other web services on the network, and a DNS server which can use another as upstream. Local Network Access permissions make it impossible to reliably perform unattended updates of services because an updated binary requires a GUI login to grant local network permissions (again). I use brew services to manage the services as launchd agents, i.e. they run in a non-root GUI context. I know that I can also use sudo brew services which instead installs the services as launchd daemons, but running services as root has negative security implication and generally doesn't look like a good idea to me. If only there was a way to disable local network access checks altogether…

Currently in our app, to identify a network switch in device we are doing NEHotspotHelper.register and then NEHotspotHelperHandler block. When the command type is evaluate and if the network.didJustJoin, we are identifying it as a network switch. As a part of moving our code base to iOS 26, if is found that NEHotspotHelper is deprecated. What is the proper replacement for this?

Hello, We are implementing Apple Wallet extensions (PKIssuerProvisioningExtensionHandler). While our UI extension works as expected, our Non-UI extension is unable to detect payment passes provisioned by our app. Specifically, PKPassLibrary().passes(of: .secureElement) returns an empty array when called from the Non-UI extension, even though the same call correctly returns the passes when executed from the Main iOS App. Our Payment Network Operator has confirmed that our extension bundle identifiers are correctly registered in the metadata on their side. They suggested that the Wallet Extensions entitlement (com.apple.developer.payment-pass-provisioning) may require additional backend enablement for these specific Extension App IDs. Is there a known reason why PKPassLibrary would behave differently in the Non-UI extension vs the Main App? Beyond the standard entitlement request, is there a specific process to "activate" these IDs for extension visibility? Does anyone have guidance on reaching the appropriate team for backend entitlement activation issues? Any insights would be greatly appreciated.

I've created an application, applied for the multicast permissioning, it was granted to my bundleID and therefore my application. I've since come out with new versions of the same app, but now multicast entitlement is no longer provisioned. What must I check to identify where the problem exists? I can provide any details needed to troubleshoot.

Reference: FB21797091 / Related to thread 807695 Hello, I have already submitted a report regarding this issue via Feedback Assistant (FB21797091), but I would like to share the technical details here to seek further insights or potential workarounds. We are experiencing a technical regression where Universal Links and Shared Web Credentials fail to resolve for Internationalized Domain Names (IDN) specifically on iOS 16 and later. This issue appears to be identical to the one discussed in thread 807695 (https://developer.apple.com/forums/thread/807695). Technical Contrast: What works vs. What fails On the exact same app build and iOS 16+ devices, we observe a clear distinction: Standard ASCII Domain (onelink.me): Works perfectly. (Proves App ID and Entitlements are correct) Internal Development Domain (Standard ASCII): Works perfectly. (Proves our server-side AASA hosting and HTTPS configuration are correct) Japanese IDN Domain (xn--[punycode].com): Fails completely. (Status: "unspecified") Note: This IDN setup was last confirmed to work correctly on iOS 15 in April 2025. Currently, we are unable to install the app on iOS 15 devices for live comparison, but the regression starting from iOS 16 is consistent. This "Triple Proof" clearly isolates the issue: the failure is strictly tied to the swcd daemon's handling of IDN/Punycode domains. Validation & Diagnostics: Validation: Our Punycode domain passes all technical checks on the http://Branch.io AASA Validator (Valid HTTPS, valid JSON structure, and Content-Type: application/json). sysdiagnose: Running swcutil on affected iOS 16+ devices shows the status as "unspecified" for the IDN domain. Symptoms: Universal Links consistently open in Safari instead of the app, the Smart App Banner is not displayed, and Shared Web Credentials for AutoFill do not function. Request for Resolution: We request a fix for this regression in the swcd daemon. If this behavior is a specification for security reasons, please provide developers with a supported method or workaround to ensure IDN domains function correctly. We have sysdiagnose logs available for further investigation. Thank you.

I am building an app for iOS and MacCatalyst that indexes files by storing their local paths. Because the app relies on the file remaining at its original location, I only want to accept items that can be opened in place. I am struggling to determine if an item is "Open In Place" compatible early in the drag-and-drop lifecycle. Specifically: In dropInteraction(_:canHandle:) and dropInteraction(_:sessionDidUpdate:), calling itemProvider.registeredTypeIdentifiers(fileOptions: [.openInPlace]) returns an empty array. Only once the drop is actually committed in dropInteraction(_:performDrop:) does that same call return the expected type identifiers. This creates a poor user experience. I want to validate the "In Place" capability at the very start of the session so the drop target only activates for valid files. If an item is ephemeral (like a dragged photo from the Photos app or a temporary export), the drop zone should not react at all. How can I reliably detect if an NSItemProvider supports .openInPlace before the performDrop delegate method is called?

Hi! I'm building a Screen Time management app using FamilyControls and ManagedSettings. When a user taps the primary button on a ShieldActionExtension, I need to open my main app to guide them through an intervention exercise. Other approved App Store apps like Jomo - Screen Time Blocker do exactly this: tapping their shield's primary button opens the main Jomo app directly. Screen recording: https://drive.google.com/file/d/15yubtTdTkFskGCIaAw_HGB57-boHPl3a/view?usp=sharing I've tried: URL schemes (UIApplication.shared.open() unavailable in extensions) Universal links Local notifications (works, but adds an extra tap) NSUserActivity Is there a supported API I'm missing? Or another accepted solution? Any guidance is appreciated.

I'm implementing app intents for my tasks app which supports recurrence rule for tasks. I see that when creating a todo for Reminders via Siri it allows to set a recurrence rule via natural language. Is there a built in way to receive that recurrence rule as a @Parameter in my AppIntent? If not, is it possible to receive the full user dictated text in the AppIntent:perform method so that I can use some ML model to convert the text to EKRecurrenceRule or similar?

Hi there, I'm trying to build my APP with EAS, unfortunately I can't log in the 2FA. I get the call from apple giving me the 2FA code and I enter it correctly but if gives me an error. So I read if I connect it to my laptop (macbook) it should work. However I try to connect my account to my macbook I just get another error: Verification failed Verification codes cannot be sent to this phone number at this time. Please try again later. I suspect it is because I get the codes via voice call and not SMS. However: 1. I can't log into my account anymore as the 2FA always fails now. 2. I can't get SMS on my number. 3. I can't change number, there is also always an unknown error if I try that. This is pretty frustrating especially given I already paid the 100€ for the developer account.

In MetricKit, a metric payload comes in with a time range which usually means it contains multiple launches/sessions. How can we relate things that will change between launches or sessions such as pid and lowPowerModeEnabled from the metadata. Will there be multiple payloads for each unique value or is there some other way to use this?

Background: During daily usage of iOS devices, devices experience noticeable thermal issues. This heating not only affects user experience, but may also lead to device performance throttling, shortened battery life, and other problems. We need better understanding and monitoring of device thermal states to optimize application performance and user experience. Issues Encountered: Insufficient thermal monitoring capabilities: Unable to obtain real-time accurate temperature data from devices Difficult power consumption analysis: Hard to determine which specific modules or threads cause high power consumption and heating Requested Solutions: Temperature Monitoring API: Provide accessible device temperature reading interfaces Thermal Attribution Analysis Capability: During heating events, we expect to receive more detailed power consumption monitoring data, such as CPU, GPU, network, location services, display, high power consumption thread stacks and other information to help developers identify high energy consumption operations

In recent versions, the increase in background abnormal exits is significant. According to monitoring data, it is closely related to the iOS 26 system. Could you please look into the reasons or provide some suggestions for troubleshooting the issue?