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.

Installing a development build on a physical iPhone fails with: 0xE8008018 - The identity used to sign the executable is no longer valid. On the same Mac, same iPhone, same codebase and same Xcode, switching to a free personal Apple ID team installs and runs with no error. Only builds signed with our paid organisation team fail. Nothing else changes between the two runs. We have already regenerated certificates and provisioning profiles, deleted the profiles folder, cleared DerivedData, removed old identities from the keychain, trusted the profile on device, and tried both automatic and manual signing. None of it changes the result. We have also gone through the existing threads on this error and none of the suggested fixes apply. The build validates locally but the device rejects the identity. Since the signing team is the only variable between success and failure, what should we be looking at? A support case is open with Developer Support but we have not had a technical response yet.

If you're on an Intel Mac, here's the reason and the fix. Cost me an evening, and I found nothing online except closed bug reports with the same symptom. The problem: The browser flow works fine. You authorize, the page confirms, Xcode acts like nothing happened, no error anywhere. Xcode only downloads the Apple Silicon (arm64) build of its agent binaries. On Intel they can't run at all. The process meant to receive your login dies instantly with "bad CPU type in executable" and Xcode never surfaces it. Check if this is you: file ~/Library/Developer/Xcode/CodingAssistant/Agents/claude/*/claude If it says arm64 and your Mac is Intel, that's the problem. The fix: Open the Info.plist next to the binary. It has the exact download URL. Download the x64 build of the same version. → Claude: change darwin-arm64 to darwin-x64 in that URL. → Codex: grab codex-x86_64-apple-darwin.tar.gz from the matching rust-v release on GitHub. Replace the binary and make it executable: chmod 755 Update the checksum in Info.plist. It's a plain SHA-512: shasum -a 512 Restart Xcode and sign in again. Bonus (Claude Pro / Max) Run claude setup-token in Terminal, then add the token to: ~/Library/Developer/Xcode/CodingAssistant/ClaudeAgentConfig/settings.json {"env": {"CLAUDE_CODE_OAUTH_TOKEN": "your-token"}} Pick "Authenticate with Configuration File" in the agent menu. Runs on your subscription no API key. Heads up: an Xcode update can re-download the wrong binary, so you may have to repeat this until Apple fixes the architecture detection.

I'm unable to use the Claude Agent in Xcode 26 (stable release) running on macOS 27 beta 5. Steps to reproduce: Open Xcode 26 Settings > Intelligence Select Claude Agent Expected: The Account section loads and allows me to sign in / manage my Claude account. Actual: The Account row shows a loading spinner indefinitely and never resolves, so I can't sign in or use the Claude Agent at all. Environment: Xcode 26 (stable), macOS 27 beta 5. Is this a known incompatibility with macOS 27 beta 5? Is there a workaround (e.g. clearing a cache or re-adding the account) to get the Claude Agent account section to load?

I use a free Apple Personal Team with Xcode for on-device testing. My Apple Development certificate created on 15 August 2026 shows “Missing Private Key”, and Xcode is not allowing me to create a fresh replacement certificate. I have already contacted Apple Developer Program Support, and they directed me to the Apple Developer Forums for technical assistance. How can I revoke/reset the unusable certificate or clear the certificate state for my Personal Team so that Xcode can create a new Apple Development certificate?

Hi Apple Developer Community, I’m experiencing a significant delay with my first app submission and wanted to check if anyone else is facing the same issue. I submitted my app Vetline (iOS 1.0) for App Review on August 10, 2026 at 6:55 PM. As of today, August 20, the status is still: Waiting for Review I have not received any communication from App Review or any request for additional information in the Resolution Center. I also contacted Apple Developer Support regarding the delay, but so far I have only received an acknowledgment that my query was received and no further update. Has anyone submitted an app around August 8–12 and experienced a similar delay? If so, how long did it take before your app moved from Waiting for Review to In Review? I’d really appreciate hearing from other developers who are currently experiencing this. Thanks!

I tried to upload my build into testflight with XCode -> Product -> Archive -> Distribute App but this error keeps showing up: "No Team Found in Archive, Use the Signing & Capabilities editor to assign a team to the targets and build a new archive." However, my Apple ID IS connected and the bundle ID is the same as in my App Store Connect. What can I do? I tried deleting all archives, restarting Xcode & my Mac, still nothing happend. I can't get it to upload...

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.

I've been trying to submit a new software update. But App Store Connect doesn't show the last Build I uploaded with Xcode's Organizer. It's been 30+ minutes. Yet, System Status doesn't indicate an outage. What's the point of their having this site? Or is it just I who is having trouble?

I constantly manually allow Codex to read Xcode 27 skills, but I don't want to allow it to read from any arbitrary directory, so I didn't enable always allow AgentRead. Question is in the title

MacBook Air (Apple silicon), macOS 26.6.2 (25G83). I have a persistent CoreSimulator/MobileAsset issue. I do not have an Xcode project, Simulator devices, or an active need for iOS Simulator runtimes. Using Apple’s signed CoreSimulator simctl binary, I removed iOS 18.4 (22E238) and iOS 18.5 (22F77) through the documented: simctl runtime delete workflow, after simctl reported each runtime as Ready, Verified, and Deletable. Immediately after deletion, the runtime registration and mounted runtime image disappeared. However, after a normal Mac restart or later CoreSimulator service activity, both runtimes reappear under new image UUIDs and are automatically mounted read-only again. The underlying Apple MobileAsset parents remain present and report NeverCollected: iOS 18.4 / build 22E238: about 8.9 GiB iOS 18.5 / build 22F77: about 8.9 GiB The related CoreSimulator dyld cache also rebuilds to about 7.1 GiB. I have not manually deleted protected Apple assets, killed Apple services, or modified mounts. The only removal attempted was Apple’s own simctl runtime delete command. Expected result: After a successful documented runtime deletion, the runtime should remain unregistered and unmounted, and the Apple-managed backing storage/cache should become reclaimable through a supported process. Observed result: The same runtime builds return after restart/service activity, with new UUIDs and automatic mounts, while their retained MobileAssets remain. Could Apple please advise why CoreSimulator/MobileAsset reconciliation is re-registering deleted runtimes, whether NeverCollected prevents supported cleanup, and what supported procedure can permanently remove or reconcile these unused runtimes? Useful read-only checks: SIMCTL_PATH=/Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/Resources/bin/simctl "$SIMCTL_PATH" list runtimes "$SIMCTL_PATH" runtime list -v du -skx /Library/Developer/CoreSimulator/Caches/dyld

Hi everyone, We're running Xcode/Swift CI builds inside macOS VMs (Tart / Apple Virtualization Framework) on a 32-core Apple Silicon host. While investigating VM build performance, we noticed a consistent pattern: assigning 24 vCPUs to the VM produces faster overall build times than assigning 26-30 vCPUs, despite the host still showing idle CPU capacity. With higher vCPU allocations, the build starts by utilizing the CPUs well, but later stages show a noticeable drop in CPU utilization and overall build throughput. In contrast, the 24-vCPU configuration maintains more stable CPU usage and completes the workload faster. This was observed repeatedly with the same Xcode/Swift workload. The result seems counterintuitive because the VM is not exhausting the available host CPU resources. Our testing identified 24 vCPUs as the current sweet spot, even though the host provides 32 physical cores. Has anyone observed similar behavior? Some questions I have: Do Xcode builds stop scaling efficiently beyond a certain vCPU count? Are there known scheduler or virtualization effects when assigning nearly all host cores to a macOS VM? Is there a commonly recommended practice to leave a number of host cores unassigned, even when the host appears mostly idle?

Hi everyone, I’m currently running macOS 27.0 beta (26A5388g) on my Mac, along with the latest Xcode 27 beta, and I’ve recently started experiencing a serious issue where multiple macOS system services are repeatedly crashing. Initially, I started getting repeated “intelligencetasksd quit unexpectedly” notifications. At first it happened occasionally, but it has now become extremely frequent. After dismissing one crash notification, another system service often crashes shortly afterward. I’ve also seen services related to Intelligence / intents crashing. The notifications keep appearing one after another to the point where I’m barely able to use the Mac normally — including difficulty typing and interacting with applications. The issue is not limited to Xcode. It appears to affect macOS system services themselves. System information Mac: Mac15,2 (Apple silicon) macOS: macOS 27.0 beta, build 26A5388g Xcode: Xcode 27 beta Issue started: After running the macOS beta for some time; it has progressively become more frequent Main process initially crashing: intelligencetasksd Path shown in crash report: IntelligenceTasksEngine.framework/Support/intelligencetasksd Exception: EXC_BREAKPOINT (SIGTRAP) I have attached a screenshot of the crash report showing the intelligencetasksd crash. Has anyone else experienced this on macOS 27 beta? Is there a known issue with the new Intelligence/Intents services, or is there a recommended way to reset/rebuild the relevant system components? At this point the repeated crashes are making the Mac extremely difficult to use, so I’d really appreciate any troubleshooting steps or information about whether this is a known beta issue. Thanks!

I tried to upload my build into testflight with XCode -> Product -> Archive -> Distribute App but this error keeps showing up: "No Team Found in Archive, Use the Signing & Capabilities editor to assign a team to the targets and build a new archive." However, my Apple ID IS connected and the bundle ID is the same as in my App Store Connect. What can I do? I tried deleting all archives, restarting Xcode & my Mac, still nothing happend. I can't get it to upload...

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!

Translated Report (Full Report Below) Process: Xcode [3530] Path: /Applications/Xcode.app/Contents/MacOS/Xcode Identifier: com.apple.dt.Xcode Version: 26.6 (24959) Build Info: IDEApplication-24959000000000000~2 (17F113) Code Type: ARM-64 (Native) Role: Background Parent Process: launchd [1] Coalition: com.apple.dt.Xcode [1786] User ID: 501 Date/Time: 2026-08-17 23:51:47.2077 +0100 Launch Time: 2026-08-17 23:51:47.0576 +0100 Hardware Model: MacBookPro18,2 OS Version: macOS 26.6.2 (25G83) Release Type: User Crash Reporter Key: A48FA3EB-7CA7-3507-8300-E41E5EDD5284 Incident Identifier: 7B4676E3-9607-4890-B61E-04DE788BC3C3 Time Awake Since Boot: 1000 seconds System Integrity Protection: enabled Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 6, Abort trap: 6 Terminating Process: Xcode [3530] Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x189cb05e8 __pthread_kill + 8 1 libsystem_pthread.dylib 0x189ceb8d8 pthread_kill + 296 2 libsystem_c.dylib 0x189bf1978 abort + 148 3 libsystem_c.dylib 0x189bf1a94 abort_report_np + 84 4 Xcode 0x102238ed0 main.cold.1 + 36 5 Xcode 0x102238e1c main + 340 6 dyld 0x1899204e4 start + 6992 Thread 0 crashed with ARM Thread State (64-bit): x0: 0x0000000000000000 x1: 0x0000000000000000 x2: 0x0000000000000000 x3: 0x0000000000000000 x4: 0x0000000000000073 x5: 0x000000000000002e x6: 0x000000016dbc7248 x7: 0xfffff0003ffff800 x8: 0x05371949b50970d8 x9: 0x05371948437bd158 x10: 0x0000000000000002 x11: 0x00000000fffffffd x12: 0x0000000000000000 x13: 0x0000000000000000 x14: 0x0000000000000000 x15: 0x0000000000000000 x16: 0x0000000000000148 x17: 0x00000001f7d6b358 x18: 0x0000000000000000 x19: 0x0000000000000006 x20: 0x0000000000000103 x21: 0x00000001f672a260 x22: 0x0000000102a04ce0 x23: 0x00000001f6731908 x24: 0x0000000000000001 x25: 0x000000016dbc76a0 x26: 0x00000001f672ba70 x27: 0x0000000000000000 x28: 0x0000000000000000 fp: 0x000000016dbc73c0 lr: 0x0000000189ceb8d8 sp: 0x000000016dbc73a0 pc: 0x0000000189cb05e8 cpsr: 0x40001000 far: 0x0000000000000000 esr: 0x56000080 (Syscall) Binary Images: 0x102238000 - 0x10223bfff com.apple.dt.Xcode (26.6) <8025d4bb-71ea-3f57-bade-2e3c847b6cf3> /Applications/Xcode.app/Contents/MacOS/Xcode 0x189ca7000 - 0x189ce42e7 libsystem_kernel.dylib () /usr/lib/system/libsystem_kernel.dylib 0x189ce5000 - 0x189cf1b3b libsystem_pthread.dylib () /usr/lib/system/libsystem_pthread.dylib 0x189b79000 - 0x189bfa1e7 libsystem_c.dylib () /usr/lib/system/libsystem_c.dylib 0x189900000 - 0x1899b34ff dyld () <74e52480-c2bd-3c8d-812d-95fe2b74a096> /usr/lib/dyld 0x0 - 0xffffffffffffffff ??? (*) <00000000-0000-0000-0000-000000000000> ???

I can't find the "Show live issues" that was under "General > Issues > Show live issues [toggle]" It is present in Xcode 26.6 but not in Xcode 27 beta 5

Hi, I have listed below the Feedbacks for Xcode 27, please have a look at it, considerable time was spent on filing these feedbacks, thanks! Environments All of them were tested on the environment: macOS 26.5.1 (25F80) Xcode 27.0 beta (27A5194q) Feedbacks FB23133706 (Git stage tab) FB23132869 (markdown - code block) FB23132403 (markdown - search) FB23078039 (stash - slow / unresponsive) FB23077930 (stash - allow multiselection) FB23055381 (Run destination - Clear recents) FB23041713 (SwiftUI preview - SwiftData) FB23033844 (Bundle ID) FB23033231 (Device Hub - sizes)

I have an app with a Widget Extension. Both the main app and the widget extension link against the same Swift Package, which contains a localization bundle (String Catalog) used by SwiftUI views inside the package. To make the package's views follow the app's configured language (rather than the system language), I set CFBundleAllowMixedLocalizations to NO in the Info.plist of each target (main app and widget extension). Behavior in the main app: This works as expected. If the app only supports Korean, the package's views display Korean text even when the system language is set to English. Behavior in the widget: The same views (from the same package) display English instead of Korean, even though the widget extension has the identical CFBundleAllowMixedLocalizations = NO setting and the widget's view code lives entirely in the package — not in the widget extension target itself. Question: As far as I understand, widgets are supposed to follow the host app's language setting. Given that both targets have the same Info.plist configuration, why would the widget extension resolve localized strings differently from the main app for code in the same package? Is this expected behavior for widget extensions specifically, or a bug? Is there a recommended workaround to force a widget extension (and by extension, the Swift Package code it runs) to use the app's language instead of the system language?

I’m seeing a regression in Xcode 26.4 where Interface Builder will not allow connecting IBOutlets or IBActions. Symptoms: The usual gutter circle/dot does not appear next to IBOutlet / IBAction in the code editor Because of this, I cannot: drag from storyboard → code drag from code → storyboard The class is valid and already connected to the storyboard (existing outlets work) Assistant Editor opens the correct view controller file Important: The exact same project, unchanged, works perfectly in Xcode 26.3. I can create and connect outlets/actions normally there. ⸻ Environment Xcode: 26.4 macOS: 26.4 Mac Mini M4 Pro 64G Ram Project: Objective-C UIKit app using Storyboards This is a long-running, ObjC, project (not newly created) ⸻ What I’ve already tried To rule out the usual suspects: Verified View Controller Custom Class is correctly set in Identity Inspector Verified files are in the correct Target Membership Verified outlets are declared correctly in the .h file: @property (weak, nonatomic) IBOutlet UILabel *exampleLabel; Opened correct file manually (not relying on Automatic Assistant) Tried both: storyboard → code drag code → storyboard drag Tried using Connections Inspector Clean Build Folder Deleted entire DerivedData Restarted Xcode Updated macOS to 26.4 Ran: sudo xcodebuild -runFirstLaunch Confirmed required platform components installed Reopened project fresh ⸻ Observations In Xcode 26.4 the outlet “connection circles” are completely missing In Xcode 26.3 they appear immediately for the same code Existing connections still function at runtime — this is purely an Interface Builder issue ⸻ Question The gutter circles appearance has always been flaky in Xcode over the 13+ years I've been using it but now with 26.4 they have completely disappeared. Has anyone else seen this in Xcode 26.4, or found a workaround? At this point it looks like a regression in Interface Builder, but I haven’t found any mention of it yet.

[Q] Is it a known issue that the Xcode static analyzer hallucinates past results? Basically, the issue I've been observing for a few releases of Xcode now (including 27b) is that if you run a static analysis, fixes the reported issues and re-run a static analysis, you will get exactly the same results as with the first run. It's as if Xcode did not take into account the fixes. If you clean the builds (cmd + shift + K), and run the analysis again, this time, you will get up-to-date results.