Getting macOS app icons from Icon Composer working in Xcode 26.x appears to have caused widespread confusion. I've certainly had more than one headache from it. Here's what works for me: Drag the .icon file from Icon Composer into the Xcode Project Navigator, dropping it at the same level as Assets.xcassets — not inside it. In the Project Navigator, click the top-level project item to open the Project Editor. Select your app target and open the App Icons and Launch Screen section. Enter the icon name (without the .icon extension) in the App Icon field. In that same section, leave App Icons Source unchecked. Go to the Build Phases tab and expand Copy Bundle Resources. Delete the Assets.xcassets entry, leaving only the .icon file. Clean the build folder (⇧⌘K) and run. Your icon should now appear in the Dock. It appears that Icon Composer icons and even the presence of the Asset Catalog icons in Copy Bundle Resources are mutually exclusive right now. Including the Asset Catalog appears to suppress the Icon Composer icon. Removing it lets the Icon Composer icon through. Note: If your app depends on other assets in the Asset Catalog, this approach won't work for you. In that case, fall back to the traditional method — export all required sizes from Icon Composer and import them into the Asset Catalog. Hopefully Apple addresses this conflict soon.

Hi everyone, I'm developing a macOS app using Tauri 2. I need to test In-App Purchases (IAP), which requires running the actual built .app (it doesn't work properly in the development environment).I tried two approaches: Apple Development Certificate (free account): After cargo tauri build, the app "Mind Elixir.app" shows this error when I try to open it: “Mind Elixir.app” was not opened because it contains malware. This action did not harm your Mac. Apple Distribution Certificate: The app builds successfully, but because it is not notarized, Gatekeeper completely blocks it and I cannot open it at all. I just want to test IAP locally on my own Mac during development. Is there any other way to get a properly signed and runnable .app for testing IAP? Any help or workaround would be greatly appreciated. Thanks!

I'm writing a read-only filesystem extension. I see that the documentation for loadResource(resource:options:replyHandler:) claims that the --rdonly option is supported, which suggests that this should be possible. However, I have never seen this option provided to my filesystem extension, even if I return usableButLimited as a probe result (where it doesn't mount at all - FB19241327) or pass the -r or -o rdonly options to the mount(8) command. Instead I see those options on the volume's activate call. But other than saving that "readonly" state (which, in my case, is always the case) and then throwing on all write-related calls I'm not sure how to actually mark the filesystem as "read-only." Without such an indicator, the user is still offered the option to do things like trash items in Finder (although of course those operations do not succeed since I throw an EROFS error in the relevant calls). It also seems like the FSKit extensions that come with the system handle read-only strangely as well. For example, for a FAT32 filesystem, if I mount it like mount -r -F -t msdos /dev/disk15s1 /tmp/mnt Then it acts... weirdly. For example, Finder doesn't know that the volume is read-only, and lets me do some operations like making new folders, although they never actually get written to disk. Writing may or may not lead to errors and/or the change just disappearing immediately (or later), which is pretty much what I'm seeing in my own filesystem extension. If I remove the -F option (thus using the kernel extension version of msdos), this doesn't happen. Are read-only filesystems currently supported by FSKit? The fact that extensions like Apple's own msdos also seem to act weirdly makes me think this is just a current FSKit limitation, although maybe I'm missing something. It's not necessarily a hard blocker given that I can prevent writes from happening in my FSKit module code (or, in my case, just not implement such features at all), but it does make for a strange experience. (I reported this as FB21068845, although I'm mostly asking here because I'm not 100% sure this is not just me missing something.)

Hello, I have crated a DriverKit driver for macOS and iPad M-series if I ever get the mac driver working. I have the correct entittlements, and matching provisioning profile downloaded manually. The driver loads (no errors!), and is visible in ioreg below the usb device (when plugged). The issue is that I never get any log from the driver, have reduced to minimal working code (below). When I debug with lldb, I load the symbols for my driver and break on init and Start - but lldb never triggers == never calls start or init. This is also why no logs. When I unplug the device, the driver process (ps aux) keeps running, causes a hard crash of the Mac with dext remove/or kill driver.dext process. I have asked Claude - but its just running in circles: check Info.plist=ok, check entitlements=ok, check code (minimal)=ok, check iig=ok, check provisioning profile=ok, check build settings=ok, check ioreg=ok, check code signature=ok, start over I don't get any log from my driver, which is consistent with init() not being called. All logs from kernel & friends (AMFI) do show the driver loading - no errors. Any tips appreciated! // USBDriver.iig #ifndef USBDriver_h #define USBDriver_h #include <USBDriverKit/IOUSBHostInterface.iig> class USBDriver: public IOService { public: virtual bool init() override; virtual void free() override; virtual kern_return_t Start(IOService * provider) override; virtual kern_return_t Stop(IOService * provider) override; }; // USBDriver.cpp #include <os/log.h> #include <DriverKit/DriverKit.h> #include "USBDriver.h" bool USBDriver::init() { if (!super::init()) return false; os_log(OS_LOG_DEFAULT, "terminal.driver: init()"); return true; } kern_return_t IMPL(USBDriver, Start) { os_log(OS_LOG_DEFAULT, "terminal.driver: Start()"); kern_return_t ret = super::Start(provider); if (ret != kIOReturnSuccess) { os_log(OS_LOG_DEFAULT, "terminal.driver: super::Start failed: 0x%08x", ret); return ret; } os_log(OS_LOG_DEFAULT, "terminal.driver: Start() success"); return super::Start(provider); } kern_return_t IMPL(USBDriver, Stop) { os_log(OS_LOG_DEFAULT, "terminal.driver: Stop()"); return super::Stop(provider); } void USBDriver::free() { os_log(OS_LOG_DEFAULT, "terminal.driver: free()"); super::free(); }

The file ~/.CFUserTextEncoding contained a string which I can't understand. It's recreated when a user log in. I had found that the result of CoreFoundation.CFStringGetSystemEncoding() is affected by the content of this file. What is this file used for?

I submitted my last macOS application with IAP on Oct. 23rd, 2025. I was able to test-purchase a non-consumable product with the StoreKit configuration file at that time. These days, every time I test a new macOS application with the configuration file, a purchase process fails. The thing is they all now fail if I test the store with existing applications that were once working. Xcode shows the following debugging error. Purchase failed with error: systemError(Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service created from an endpoint was invalidated from this process." UserInfo={AMSDescription=An unknown error occurred. Please try again., AMSURL=http://localhost:53272/WebObjects/MZBuy.woa/wa/inAppBuy, NSDebugDescription=The connection to service created from an endpoint was invalidated from this process., AMSStatusCode=200, AMSServerPayload={ All my iOS apps don't exhibit the same problem. This StoreKit fiasco only happens for macOS applications. And I'm thinking that it all started to occur after I began using Xcode 26. Not a single line of code has changed. But the applications that were once able to process IAP all now fail. And I'm suspecting that it's Xcode 26 that is responsible for this failure. My Xcode version is 26.2, by the way. Any macOS application developer experiencing the same problem?

This example application crashes when entering any text to the token field with FAULT: NSGenericException: The window has been marked as needing another Update Constraints in Window pass, but it has already had more Update Constraints in Window passes than there are views in the window. The app uses controlTextDidChange to update a live preview where it accesses the objectValue of the token field. If one character is entered, it also looks like the NSTokenFieldDelegate methods tokenField(_:styleForRepresentedObject:) tokenField(_:editingStringForRepresentedObject:) tokenField(_:representedObjectForEditing:) are called more than 10000 times until the example app crashes on macOS Tahoe 26 beta 6. I've reported this issue with beta 1 as FB18088608, but haven't heard back so far. I have multiple occurrences of this issue in my app, which is working fine on previous versions of macOS. I haven't found a workaround yet, and I’m getting anxious of this issue persisting into the official release.

I am an audio plugin developer. 11.2.1 we were able to drag audio from the arrange page into the plugin. 11.2.2. that is now broken. I saw someone have a similar post, but MIDI. Any help would be greatly appreciated.

Logic Pro recently changed the way it accepts drag and drop. If the ItemProvider contains UTType.midi, then Logic Pro shows visual feedback for the drop operation, but when the item is dropped, nothing happens. In the past, drag-and-drop used to work. With today's version (Logic Pro 11.2), the only way I was able to successfully drop MIDI was to provide UTType.fileURL and no other data types. But that's not a viable solution; I need other data types to be included too. As a side note, I tested with Ableton Live 12 and it works with no issue. Is this a bug in Logic Pro? What ItemProvider structure does Logic Pro expect to correctly receive the MIDI data?

I am currently developing an app for MacOS that needs to control HomeKit devices like lights. However, it seems like MacOS is supported on the official documentation, but not when I try to create an app ID on developer.apple.com. On the link https://developer.apple.com/apple-home/, MacOS is clearly showed as supported for MacOS. But when I try to create an app ID, it shows that it is only compatible for iOS, VisionOS and WatchOS. Could this be clarified? Best regards, orangeidle25

Hello, we are currently integrating Writing Tools into our macOS application using NSWritingToolsCoordinator with a custom NSView. Overall, the integration is going well and we are generally satisfied with the API. However, text replacement is sometimes not using NSWritingToolsCoordinator callback function. When selecting “Replace” from a preview in a Writing Tools UI popup, the text replacement is performed via the NSTextInputClient callback function (insertText:), which does not seem correct. This is especially problematic in multi-context scenarios, because NSTextInputClient insertText: does not provide the required information about the Writing tools context being used. As a result, it is not possible to determine which context is being modified when managing more than a single context. In our view, Writing Tools should consistently use the callback function of NSWritingToolsCoordinator for text replacement, whatever is the action performed. This is essential for properly handling multi-context use cases. This issue is reproducible with the sample app project provided here https://developer.apple.com/documentation/appkit/enhancing-your-custom-text-engine-with-writing-tools. If you define a breakpoint in function writingToolsCoordinator:replaceRange:inContext:proposedText:reason:animationParameters:completion: of the Writing tools coordinator, the function is not triggered if text replacement is performed from a preview like for "Summary" with "replace" button. NSWritingToolsCoordinator callback function seems to be called only when text replacement is performed directly inline (in the text view) without external preview so. i have opened a issue with feedback assistant: FB22401950. Best regards.

Hello, we are currently integrating Writing Tools into our macOS application using NSWritingToolsCoordinator with a custom NSView. Overall, the integration is going well and we are generally satisfied with the API. However, text replacement is sometimes not using NSWritingToolsCoordinator callback function. When selecting “Replace” from a preview in a Writing Tools UI popup, the text replacement is performed via the NSTextInputClient callback function (insertText:), which does not seem correct. This is especially problematic in multi-context scenarios, because NSTextInputClient insertText: does not provide the required information about the Writing tools context being used. As a result, it is not possible to determine which context is being modified when managing more than a single context. In our view, Writing Tools should consistently use the callback function of NSWritingToolsCoordinator for text replacement, whatever is the action performed. This is essential for properly handling multi-context use cases. This issue is reproducible with the sample app project provided here https://developer.apple.com/documentation/appkit/enhancing-your-custom-text-engine-with-writing-tools. If you define a breakpoint in function writingToolsCoordinator:replaceRange:inContext:proposedText:reason:animationParameters:completion: of the Writing tools coordinator, the function is not triggered if text replacement is performed from a preview like for "Summary" with "replace" button. NSWritingToolsCoordinator callback function seems to be called only when text replacement is performed directly inline (in the text view) without external preview so. i have opened a issue with feedback assistant: FB22401950. Best regards.

I have been using this block of Swift code for weeks with no problems. Then, today, every time I invoke it it fails: let openPanel = NSOpenPanel() openPanel.canChooseFiles = true openPanel.allowsMultipleSelection = false openPanel.canChooseDirectories = true openPanel.canCreateDirectories = false openPanel.title = NSLocalizedString("Open a CSV file", comment: "Open a CSV File") var result = NSApplication.ModalResponse.OK do { try result = openPanel.runModal() } catch { print("Open Panel failed: \(error)") return } if result == .OK { CSVFile = openPanel.url!.path } else { openPanel.close() print("No CSV file selected.") return } I get this message pointing to the .openModal expression: "Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value" It's a real head-scratcher!

This is not exactly a feedback about the forums but I couldn't find a better location to ask this question. The macos release notes are hosted at developer.apple.com. For example, the macos 26.4 release note is here https://developer.apple.com/documentation/macos-release-notes/macos-26_4-release-notes. Would it be possible to include the release date in those release notes? Right now, it's hard to locate that information. It would also be useful to even include the sw_vers of that particular release in those release notes. For example: ProductName: macOS ProductVersion: 26.4 BuildVersion: 25E246 Having the sw_vers and the release date in the first few lines of the release note would be handy. The reason I went looking for the release date was because the corresponding sources for macos 26.4 hasn't yet been listed at https://opensource.apple.com/releases/. It usually takes a few days for that to happen, so I wanted to see how long it has been since 26.4 was released.

iPhone 14(iOS 26.4) MacBook Air M4 (macOS 26.4) When I mirror with iPhone on Mac, the enter key is always pressed automatically uncontrollably, causing the search bar and other related scenes to fail. And AirPods Pro 2nd generation will switch between Mac and iPhone by mistake, when iPhone and Mac are not playing

Mac Pro 2019, Tahoe 26.3, Xcode 26.2 Mac Mini 2023 M2, Tahoe 26.3, Xcode 26.2 On Mac Pro 2019 the app is only Intel while on Mac Mini 2023 M2 it is ARM64 only. Both have Standard Architectures (Apple Silicon, Intel). Both have Build Active Architecture Only is set to No (Debug + Release). Happen for default new projet macOS -> App and Obj-C, Xib. No change to defaults setting except uncheck "Automaticaly manage signing" and "Signing Certificate" set to "Sign to Run Locally" HOWEVER On Mac Pro 2019, BigSur 11.7.10, Xcode 14.10 the application is build Universal ! Why cannot build universal with Tahoe 26.3, Xcode 26.2 ? Can I submit a Mac applcation to App Store Connect with BigSur 11.7.10, Xcode 14.10 ? What are the minimal version of Mac Os and Xcode to submit a Mac applcation to App Store Connect ?

We're developing a Mac App Store application that embeds the V8 JavaScript engine (via Electron). The application has shipped successfully on macOS 15.x with the following entitlements: com.apple.security.app-sandbox = true com.apple.security.cs.allow-jit = true com.apple.security.cs.allow-unsigned-executable-memory = true com.apple.security.cs.disable-library-validation = true On macOS 26 Tahoe, the exact same signed binary crashes deterministically within ~1.5 seconds on Apple Silicon with EXC_BREAKPOINT (SIGTRAP), ESR 0xf2000000. The crash is in V8's background JIT compilation thread when it attempts to manage memory page protections (transitioning pages between Read-Write and Read-Execute states via mprotect). The crash does not occur in these configurations: macOS 26 + App Sandbox + Intel x86_64 — works macOS 26 + Hardened Runtime (no sandbox) + ARM64 — works macOS 15.x + App Sandbox + ARM64 — works This appears to be a regression in how the XNU kernel handles mprotect calls for sandboxed processes on ARM64 under macOS 26, specifically in the context of the allow-jit entitlement. Has the behavior of allow-jit changed in macOS 26 with respect to runtime code generation memory management on ARM64? Is there a new API or entitlement that V8-style JIT engines should use instead of mprotect-based RW↔RX page transitions?

Device Details: MBP M2 Pro AND MBP M3 Pro macOS 26.3 (25D125) Xcode Version 26.3, 26.2, 26.1 (I reinstalled all 3 of these after the macOS update) BUG: Xcode hangs indefinitely when performing Source Control operations (Pull or Push) on a Git repository that uses SSH authentication. The same repository works correctly when performing the equivalent Git operations from the Terminal using the Git CLI. The issue appears to be specific to Xcode’s internal Source Control integration. When the operation is triggered from Xcode, the UI shows a spinning progress indicator and never completes. Terminal Git commands (git fetch, git pull, git push) complete normally using the same SSH key and repository. A hang sample taken during the issue shows the Xcode main thread blocked in Source Control authentication and fingerprint handling code paths, including: IDESourceControlUIHandler IDESourceControlFingerprintManager handleAuthenticationFailure showFingerprintAlertOnWindow This suggests Xcode may be waiting on a Source Control authentication or host fingerprint UI flow that never resolves. SSH connectivity itself is functioning correctly: ssh -T git@bitbucket.org and ssh -T git@github.com both authenticate successfully. git ls-remote, git fetch, git pull, and git push all work correctly from Terminal. No Source Control accounts are configured in Xcode Preferences. Authentication relies entirely on SSH keys. Steps to Reproduce Configure an SSH key for Git access (e.g., Bitbucket or GitHub) and confirm it works via Terminal. Clone or open an existing Git repository that uses SSH (git@host:repo.git). Open the project/workspace in Xcode. In Xcode, attempt a Source Control operation such as: Source Control → Pull Source Control → Push Observe that Xcode displays a spinning progress indicator and does not complete the operation. Logs available on this Feedback Assist ID: FB22146913

I've looked around quite a bit at the EventKit documentation and done all the searching I could think of, as well as examining the EKCalendar and EKEventStore types. Trying to find out how to view, modify, and create groups of reminders lists.

I recently turned on the enhanced security options for my macOS app in Xcode 26.0.1 by adding the Enhanced Security capability in the Signing and Capabilities tab. Then, Xcode adds the following key-value sets (with some other key-values) to my app's entitlements file. <key>com.apple.security.hardened-process.enhanced-security-version</key> <integer>1</integer> <key>com.apple.security.hardened-process.platform-restrictions</key> <integer>2</integer> These values appear following the documentation about the enhanced security feature (Enabling enhanced security for your app) and the app works without any issues. However, when I submitted a new version to the Mac App Store, my submission was rejected, and I received the following message from the App Review team via the App Store Connect. Guideline 2.4.5(i) - Performance Your app incorrectly implements sandboxing, or it contains one or more entitlements with invalid values. Please review the included entitlements and sandboxing documentation and resolve this issue before resubmitting a new binary. Entitlement "com.apple.security.hardened-process.enhanced-security-version" value must be boolean and true. Entitlement "com.apple.security.hardened-process.platform-restrictions" value must be boolean and true. When I changed those values directly in the entitlements file based on this message, the app appears to still work. However, these settings are against the description in the documentation I mentioned above and against the settings Xcode inserted after changing the GUI setting view. So, my question is, which settings are actually correct to enable the Enhanced Security and the Additional Runtime Platform Restrictions?