Some Macs recently received a macOS system update which disabled the simulator runtimes used by Xcode 15, including the simulators for iOS, tvOS, watchOS, and visionOS. If your Mac received this update, you will receive the following error message and will be unable to use the simulator: The com.apple.CoreSimulator.SimRuntime.iOS-17-2 simulator runtime is not available. Domain: com.apple.CoreSimulator.SimError Code: 401 Failure Reason: runtime profile not found using "System" match policy Recovery Suggestion: Download the com.apple.CoreSimulator.SimRuntime.iOS-17-2 simulator runtime from the Xcode To resume using the simulator, please reboot your Mac. After rebooting, check Xcode Preferences → Platforms to ensure that the simulator runtime you would like to use is still installed. If it is missing, use the Get button to download it again. The Xcode 15.3 Release Notes are also updated with this information.

There's an easily reproducible SwiftUI bug on macOS where an app's UI state no longer updates/re-renders for "Designed for iPad" apps (i.e. ProcessInfo.processInfo.isiOSAppOnMac == true). The bug occurs in Xcode and also if the app is running independent of Xcode. The bug occurs when: the user Hides the app (i.e. it goes into the background) the user puts the Mac to sleep (e.g. Apple menu > Sleep) a total of ~60 seconds transpires (i.e. macOS puts the app into the "suspended state") when the app is brought back into the foreground the UI no longer updates properly The only way I have found to fix this is to manually open a new actual full app window via File > New, in which case the app works fine again in the new window. The following extremely simple code in a default Xcode project illustrates the issue: import SwiftUI @main struct staleApp: App { @State private var isBright = true var body: some Scene { WindowGroup() { ZStack { (isBright ? Color.white : Color.black).ignoresSafeArea() Button("TOGGLE") { isBright.toggle(); print("TAPPED") } } .onAppear { print("\(isBright ? "light" : "dark") view appeared") } } } } For the code above, after Hiding the app and putting the computer to sleep for 60 seconds or more, the button no longer swaps views, although the print statements still appear in the console upon tapping the button. Also, while in this buggy state, i can get the view to update to the current state (i.e. the view triggered by the last tap) by manually dragging the corner of the app window to resize the window. But after resizing, the view again does not update upon button tapping until I resize the window again. so it appears the diff engine is mucked or that the Scene or WindowGroup are no longer correctly running on the main thread I have tried rebuilding the entire view hierarchy by updating .id() on views but this approach does NOT work. I have tried many other options/hacks but have not been able to reset the 'view engine' other than opening a new window manually or by using: @Environment(.openWindow) private var openWindow openWindow could be a viable solution except there's no way to programmatically close the old window for isiOSAppOnMac (@Environment(.dismissWindow) private var dismissWindow doesn't work for iOS)

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Hi, I've discovered that my Keyboard Extension is unable to detect any hinge status update on iPhone Duo. I tired both UIKit and SwiftUI approach - nothing works. Is there any workaround to make it work? Reproducible demo: https://www.icloud.com/iclouddrive/0460exMJtAdRkpk8EDjb751nw Xcode 27.1 (27A9269) iOS 27.1 beta 1 (24A94401) I also created a bug report: FB24883137

I am using Coding Intelligence, powered by Claude, in the first production release of Xcode 27.0 (in MacOS 26.7). Initially it was working ok. But after less than a day, it now crashes every time it needs to ask for permission for any shell command. And each time I restart things, it burns through a ton of tokens. ☹️ Any suggestions? (I'll file a bug report right now…)

Xcode version 26.6 (17F113) MyOwnKeyboard-PAD app looks OK using simulator iPad Air 11-inch(M4). It automatically reformats to all orientations using only left and right landscape selected in General, Deployment Info. The submitted app 1.9 (4) had the portrait checked which was an error. I tried to update to version to 1.10 without portrait and upside down, but Validation states it must have all orientations needed. I tried setting all orientations and the simulator cuts off the sides. I am using a new mini M4 with Tahoe 26.6.2 Converted from an older developer mini using Migration Assistant. After conversion Xcode could not find xcspace files and apps locked up. I had to create new apps with different bundles which got conflicted in AppConnects causing rejects. When new versions are submitted, old versions cannot be removed because of submission states. Causing similar binaries, design and scam. I got trapped in the process! I have replied to AppConnect ref. binaries, design and scam. I hope someone can straighten this mess out. The good new is the free MyOwnKeyboard-PHONE analytics look OK with 4,000 impressions and 38 downloads and 172 product page reviews. It's a start! Thank you. Charlie Coupe Designer/Coder 2026sep16

Large companies/applications are good to go for Duo release. Is there a timeframe when Xcode 27.1 will be available so we can build and submit to App Store in time for Duo release? Any guidance around this?

I have submitted a feedback report regarding Xcode 27.1 RC Device Hub: iPhone Duo screen captures function only work when the device is fully closed; alternative hinge positions produce a blank display.

I have a problem downloading Xcode components like Metal Toolchain or Developer Documentation. The action stuck with the status "Preparing to download". The symptoms started several weeks ago. I noticed this when my copy of Xcode 27 beta stopped showing the developer documentation. Strangely, when I re-launched Xcode it insists to download the Developer Documentation and keep showing "Preparing to download" while other components like Metal Toolchain, when I quit Xcode, it cancels the component download and that component status reverts to "Get". The symptoms continue thru the released version of Xcode27. Does anyone know the cure?

Hi everyone, I am developing an iOS companion app with an integrated watchOS component (a golf swing tracking tool using CoreMotion). I have run into an issue where the watchOS app gets stuck indefinitely in the "Installing..." state and never finishes installing on the physical Apple Watch. Environment (All on latest public releases): Xcode Version: Latest release (Xcode 18.x) macOS Version: Latest release (macOS Sequoia / latest version) iOS Version: Latest release (iOS 20.x) watchOS Version: Latest release (watchOS 13.x on Apple Watch Ultra 2) Deployment Target: Matched to latest minimum deployments Signing: "Automatically manage signing" enabled with an active Apple Developer Program account Steps to Reproduce: Connect the iPhone to the Mac via a physical cable. Select the iOS target in Xcode and successfully run/install the companion app onto the iPhone. Launch the stock Watch app on the paired iPhone. Scroll down to the "Available Apps" section, locate the development app, and tap "Install". The circular progress indicator starts spinning with the status "Installing...", but it remains in this state indefinitely (waited over 2 hours) without ever completing, timing out, or surfacing an error alert on either the iPhone or the Apple Watch. Troubleshooting Already Verified: Bundle ID Hierarchy: iOS App: com.company.appname Watch App: com.company.appname.watchkitapp Both targets share the exact same Development Team, signing certificate, and provisioning profiles. Developer Mode: Explicitly enabled and rebooted on the Apple Watch (Settings -> Privacy & Security -> Developer Mode). Also verified as enabled on the host iPhone. Connectivity & Cache: Cleared Xcode DerivedData (rm -rf ~/Library/Developer/Xcode/DerivedData). Performed hard reboots on both the iPhone and the Apple Watch to terminate any hung background sync daemons (installd / CoreDevice). Ensured both devices and the Mac are on the same Wi-Fi network with Bluetooth turned on. Questions: Under the current CoreDevice architecture, is installing local debug builds via the iPhone's stock Watch app still supported, or does it silently fail because the physical Apple Watch's UDID is not directly provisioned during an iOS-only build? Which subsystem in macOS Console.app (e.g., com.apple.dt.CoreDevice, com.apple.StreamingExtractor, or installd) is best for tracking the exact error/timeout code when the watch installation hangs? What is the currently recommended workflow to deploy and debug a paired watchOS target directly onto physical hardware? Any insights from the team or community would be greatly appreciated!

When I add an SVG file to an asset catalog Image Set, the Attributes Inspector shows Color Space: Generic RGB instead of sRGB. The rendered color on device does not match the hex value in the SVG.

I have an orphaned asset folder taking up 9.13GB located at: /System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/c0d3fd05106683ba0b3680d4d1afec65f098d700.asset It contains SimulatorRuntimeAsset version 18.5 (Build 22F77). Active Version: My current Xcode setup is using version 26.2 (Build 23C54). I checked the plist files in the directory and found what seems to be the cause of the issue: The "Never Collected" Flag: The Info.plist inside the orphaned asset folder explicitly sets the garbage collection behavior to "NeverCollected": <key>__AssetDefaultGarbageCollectionBehavior</key> <string>NeverCollected</string> The Catalog Mismatch: The master catalog file (com_apple_MobileAsset_iOSSimulatorRuntime.xml) in the parent directory only lists the new version (26.2). Because the old version (18.5) is missing from this XML, Xcode and mobileassetd seem to have lost track of it entirely. What I Have Tried (All Failed) Xcode Components: The version 18.5 does not appear in Settings -> Components, so I cannot delete it via the GUI. Simctl: xcrun simctl list runtimes does not list this version. Running xcrun simctl runtime delete 22F77 fails with: "No runtime disk images or bundles found matching '22F77'." Manual Deletion: sudo rm -rf [path] fails with "Operation not permitted", presumably because /System/Library/AssetsV2 is SIP-protected. Third-party Tools: Apps like DevCleaner do not detect this runtime (likely because they only scan ~/Library or /Library, not /System/Library). Has anyone found a way to force the system (perhaps via mobileassetd or a specific xcrun flag) to re-evaluate this folder and respect a deletion request? I am trying to avoid booting into Recovery Mode just to delete a cache file. Any insights on how AssetsV2 handles these "orphaned" files would be appreciated.

Hello! I'm new to xcode and am developing an iOS app. I hit the following error when build my app: MY_SHA no identity found Command CodeSign failed with a nonzero exit code I have generated my certificate through xcode. I can see the Certificate and the private key in Keychain -> login. But it's not that private key is under the Certificate. They are listed in parallel. The certificate appears in Certificate tab but not in My Certificate Tab. Would that matter? security find-certificate -a -Z | grep -A1 "Apple Development" Gives me the certificate. But security find-identity -v -p codesigning give 0 valid identity found. Could you help me figure out what could be the reason for this? I've been stuck for several days now. Thank you so much!

Dear Apple Developer Community, Our app monitors a user-defined region by using startMonitoring on an instance of CLLocationManager. While it works as intended on a real device, starting with Xcode 27, this method invocation always results in >locationManager ... monitoringDidFailFor< being called. The error code is always kCLErrorDomain Code=5 but this only occurs within iOS 27 simulators. It works perfectly in iOS 26 simulators. Additionally, CLLocationManager.isMonitoringAvailable(for: CLCircularRegion.self) always returns false on these iOS 27 simulators. This issue blocks parts of our automated system tests. Is it a bug or on purpose? Thank you in advance.

I discovered a disk space issue with Xcode on my 1TB hard disk. Xcode doesn’t delete old or unused Simulators, causing them to mix and consume valuable space. Deleting them from the Window > Devices & Simulators menu didn’t work, so I used Disk Utility to find and delete them. However, they persisted. To regain disk space, I completely removed Xcode and the Developer Folder. After reinstalling Xcode, I regained about 80% of my disk space. Despite unmounting the Simulators, they remained. For those unable or unwilling to do this, the Mac App Store offers DevCleaner, a utility that removes old Xcode Cache and Simulators. Thanks. I hope I've helped someone else. Dan Uff

Hello, It seems that starting Xcode 27, the logs from NetworkExtensions do not show up in the Xcode Console anymore. They still show in Console.app somehow. I have filed a bug report (FB24985332) about it, if you encounter the same issue, please upvote this so that the NetworkExtension team can fix this faster, thanks !

I'm developing with the following setup: Xcode 26.2 Minimum Deployment Target: iOS 15.0 Currently using AppDelegate only I have three questions: Screen Display on iPhone Duo From what I understand, when an app built with this configuration runs on iPhone Duo, the content appears in the center area while both sides show vertical empty bars. Does this layout stay the same when the device is rotated? Camera Rotation Behavior When I open the camera and rotate the device, does the camera view automatically rotate to match the device's rotation direction? UI Rendering Differences Between Xcode Versions If I build the same app with Xcode 27 and Xcode 26, and then install both versions on the same devices (regular iPhone and iPhone Duo), are there any differences in how the UI is drawn? If there are differences, does this mean the UI rendering follows the build environment (Xcode version) rather than the runtime environment?

Since Xcode 27 GA, text entry from a UI test on a physical iOS 27 device delivers only the first 3–4 characters and then stops, while the call still returns success. Taps and scrolls are fine. The same tests pass on Xcode 27 beta 1. Filed as FB24932647. Broken: Xcode 27.0 (27A266a), 27.1 beta (27A9269), 27.2 beta 2 (27B5028f) Works: Xcode 27 beta 1 (27A5194q) Device: iPhone, iOS 27.0 (24A437) Repro. We drive it through WebDriverAgent. The failing step is XCTest's own event synthesis in testmanagerd, which is the same path XCUIElement.typeText goes through. Xcode 27.2 beta 2, run sudo xcodebuild -runFirstLaunch, reboot the device. Type subjectline into a plain UITextField. Read the field's value back. Expected subjectline. Actual sub or subj, in every one of 16 attempts. In a recipient-style field the fragment appears and is then erased, so nothing survives. 0 of 32 attempts completed. Device log, all within one second: testmanagerd Failed to load displays from CADisplay testmanagerd Failed to resolve displays. Defaulting to generic keyboard sender. testmanagerd Recap event action playback initiated UIKitCore hardwareKeyboardAttached = YES UIKitCore Moving from placement OnScreen to OffScreenDown UIKitCore Change to input view set: (empty) testmanagerd Recap event action playback completed testmanagerd can't resolve a display, so it falls back to a generic keyboard sender that registers a virtual HID keyboard. iOS then treats that as a hardware keyboard and dismisses the software keyboard while the text is still being typed. What changed. Comparing testmanagerd in the two DeveloperDiskImages: beta 1 derived the display from the app's identity (Computed display ID … from embeddedApplicationIdentifier … bundleID). GA removed that and added CADisplay enumeration with the generic fallback. That code is unchanged through 27.2 beta 2. This is not 181945323, which is marked fixed in 27.2 beta 2. That one needs Device Hub and clears on its own. Is anyone else seeing this on device? Is there a supported way to type on device under Xcode 27 GA, other than staying on beta 1?

My app start up has became horrid. It takes 1 minute to open SQLlite database for my rust core. Impossible to work... I have Address Sanitizer, Thread Perf Checker and Thread Sanitizer disabled...

I'm developing with the following setup: Xcode 26.2 Minimum Deployment Target: iOS 15.0 Currently using AppDelegate only I have three questions: Screen Display on iPhone Duo From what I understand, when an app built with this configuration runs on iPhone Duo, the content appears in the center area while both sides show vertical empty bars. Does this layout stay the same when the device is rotated? Camera Rotation Behavior When I open the camera and rotate the device, does the camera view automatically rotate to match the device's rotation direction? UI Rendering Differences Between Xcode Versions If I build the same app with Xcode 27 and Xcode 26, and then install both versions on the same devices (regular iPhone and iPhone Duo), are there any differences in how the UI is drawn? If there are differences, does this mean the UI rendering follows the build environment (Xcode version) rather than the runtime environment?

I'm setting up tests for my Xcode Multiplatform App. To create a test environment I created a docker image that I want to run an XCTestCase against. I understand I'd have to make sure Docker is running before running the test. That said I have a permission denied when trying to connect to the docker daemon socket. Background: I'm using a makefile to store the commands and planned to run the docker build and docker run commands in the setUpWithError while running the docker kill command in tearDownWithError. To run the commands I used Process to execute the shell commands. I'm currently doing this is a test function to get it up and going. Issue: When I try to run the docker command Xcode tells me that it doesn't give me the permission to run it: docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/create?name=remarkable": dial unix /var/run/docker.sock: connect: operation not permitted. See 'docker run --help'. I only want to use Docker to run this specific XCTestCase. Is there anyway to run it from here JUST for the test? Or do I need to manually run docker and kill it before/after I run these tests? Thanks for any help.