I've updated my computer to Sequoia 15, Xcode 16 and now no matter what I do, I am unable to work with Swift UI previews. I get this error each time I try to run the preview: Failed to launch app in reasonable time I have done: Uninstall/Re-install Xcode Deleted derived data Deleted the simulator data Used DevCleaner to remove all data related to Xcode Searched all websites about this issue. ( Non shown a good solution ) Write this question on here. If anyone has found a solution, please let me know how you fixed it.

The Foundation Models Framework stopped working after Xcode failed to download the "Predictive Code Completion Model". What happened was on macOS Tahoe 26.0: Downloaded and installed Xcode 26 Beta (17A5241e) Worked with Foundation Models framework. Everything worked fine. ✅ Opened Xcode 16.4 This triggers the downloading of Predictive Code Completion Model which then fails. Go back into Xcode 26 Beta, Foundation Models framework no longer works. ❌ Error: "Failed to find asset: com.apple.gm.safety_deny.input.code_intelligence.base.generic - no asset" What I've tried or checked: Reinstalling Xcode 26 Beta Uninstalling both Xcodes and only installing Xcode 26 Beta Checked available space on drive (over 300 GB free) Restarted Mac Restarted Xcode 26 Changed wifi networks Turned on VPN Deleted the Library > Developer > Xcode folder and reinstalled Xcode 26 Feedback Report FB18208139: Can't download Predictive Code Completion Model - Xcode 26 Screenshots

Since Xcode 15.3 it has become impossible to build our project more twice in a row without encountering a batch of "internal inconsistency error: never received target ended message for target ID …". This issues appeared a few months ago (15.0 i think, but i'm not sure), but xcode 15.3 makes it almost unusable. We're a team of 3 iOS devs, and we're all having the problem. Our project involves a lot of SPM packages, a few cocoa pods, a few iOS Frameworks, and a bit of swiftgen. Nothing particularly special for a large project, and no custom build steps that does anything fancy. It is now to the point where we're looking for alternative to xcode, because we can't decently kill xcode and restart every time we have to build our code...

I am experiencing an issue where my Mac's speakers will crackle and pop when running an app on the Simulator or even when previewing SwiftUI with Live Preview. I am using a 16" MacBook Pro (i9) and I'm running Xcode 12.2 on Big Sur (11.0.1). Killing coreaudiod temporarily fixes the problem however this is not much of a solution. Is anyone else having this problem?

When I compile my Xcode project using the xcodebuild command, I observe long incremental build durations. For example, compiling a new, empty project in Xcode only takes around one second. The same project takes 7 seconds to compile using the xcodebuild command. I've noticed that xcodebuild hangs at the "GatherProvisioningInputs" phase. Steps to Reproduce: Create a new Xcode project (iOS app template) Build the project in Xcode with timing summary enabled Build the same project from the command line with the following command: time xcodebuild -destination 'platform=iOS Simulator,name=iPhone 15 Pro,OS=latest' I would appreciate any insights or suggestions on how to improve the build times when using the xcodebuild command. Thank you in advance for your help!

I'm unable to download the Metal toolchain with Xcode. When trying to do it via the command line, I get the following: > xcodebuild -downloadComponent metalToolchain -exportPath /tmp/MyMetalExport/ Beginning asset download... 2025-08-06 19:46:19.983 xcodebuild[1395:22024] Writing error result bundle to /var/folders/48/1k1jfsxn56zcs4qr_719rc1w0000gn/T/ResultBundle_2025-06-08_19-46-0019.xcresult xcodebuild: error: Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({ RequestedBuild = 17A5295f; }) From Console.app: DVTDownloadsFetchAssetCatalog() complete assetType (com.apple.MobileAsset.MetalToolchain), options: (MADownloadOptions allowsCellular: 0 resourceTimeout: 60 canUseCacheServer: 0 discretionary: 0 disableUI: 0 sessionId: (null) additionalServerParams:{ RequestedBuild = 17A5295f; } allowsExpensiveAccess:1 requiresPowerPluggedIn: 0 prefersInfraWiFi: 1 liveServerOnly: -1 DownloadAuthorizationHeader: not present analyticsData: not present allowDaemonConnectionRetries: 0), result: (59), catalogError: (Download failed due to not being able to find the host. (Catalog download for com.apple.MobileAsset.MetalToolchain)) Note that I am online. I've tried restarting my computer and Xcode and using a different network.

With Xcode 26.0 beta 5 (17A5295f) when I run the following command xcodebuild -downloadComponent metalToolchain I get the following error: xcodebuild[48851:12478851] Writing error result bundle to /var/folders/b_/g67r_tl557z244g20ncr_qmsd9wrz1/T/ResultBundle_2025-07-08_11-10-0012.xcresult xcodebuild: error: Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({ RequestedBuild = 17A5295f; }) I can't install the toolchain from the Xcode GUI also. Does someone know a workaround ?

I have been working for a while now. Never encountered this issue. After accepting the invite from the organization. The organizations does not appear at developer apple account. But can see the organization at app store connect. Yes i have checked the account permissions. I have the admin role and developer role etc is checked everything is correct. This is not just me happening with my colleague as well.

None of my existing apps (both in-AppStore and in-development) nor even a brand new WatchOS app can be installed to my Apple Watch. While using Xcode to build and deploy to my Watch, I get this: ”Waiting to reconnect to Apple Watch Xcode will continue when the operation completes.” However, this dialog persists and never completes. I’m running all of the latest: MacOS 14 beta 4, Xcode 15 beta 5, Watch OS 10 beta 4, iOS 17 beta 4. I’ve tried resetting my Watch (with “Erase All” option) and restarting the Mac, the phone and the watch. Any help?

Using xcode 26 with linker flag -ld_classic，get an error ： 0 0x1042b9778 __assert_rtn + 160 1 0x1042bc560 ld::tool::SymbolTableAtom<x86_64>::classicOrdinalForProxy(ld::Atom const*) (.cold.3) + 0 2 0x1041f3da8 ld::tool::SymbolTableAtom<x86_64>::classicOrdinalForProxy(ld::Atom const*) + 172 3 0x1041f4c1c ld::tool::SymbolTableAtom::addImport(ld::Atom const*, ld::tool::StringPoolAtom*) + 140 4 0x1041f6500 ld::tool::SymbolTableAtom::encode() + 396 5 0x1041e83a8 ___ZN2ld4tool10OutputFile20buildLINKEDITContentERNS_8InternalE_block_invoke.413 + 36 6 0x182a95b2c _dispatch_call_block_and_release + 32 7 0x182aaf85c _dispatch_client_callout + 16 8 0x182acc478 _dispatch_channel_invoke.cold.5 + 92 9 0x182aa7fa4 _dispatch_root_queue_drain + 736 10 0x182aa85d4 _dispatch_worker_thread2 + 156 11 0x182c49e28 _pthread_wqthread + 232 A linker snapshot was created at: /tmp/app-2025-06-13-215652.ld-snapshot ld: Assertion failed: (it != _dylibToOrdinal.end()), function dylibToOrdinal, file OutputFile.cpp, line 5196. clang++: error: linker command failed with exit code 1 (use -v to see invocation)

Hello, Switching Core Data Editor Style has been broken since Xcode 14 Beta 1. Although I can get by, it would be convenient to switch to the Graphical ER diagram style to "visually" study the model for an App. Regards and Thank You, John

I have installed Sequoia and Xcode 16 and now I can't add packages to my (or any project). I just get a message saying the package can't be resolved. Basically I can't carry on developing. SORT THIS OUT APPLE

I failed to download Metal toolchain for Xcode Beta 5. Downloading in Settings -> Components didn't work so I tried in terminal but didn't work too. /tmp xcodebuild -downloadComponent metalToolchain -exportPath ~/Downloads Beginning asset download... 2025-08-07 16:38:44.867 xcodebuild[91064:2244768] Writing error result bundle to /var/folders/bb/xtdv2kgn6rq3zxqs4f8f1j4w0000gn/T/ResultBundle_2025-07-08_16-38-0044.xcresult xcodebuild: error: Failed fetching catalog for assetType (com.apple.MobileAsset.MetalToolchain), serverParameters ({ RequestedBuild = 17A5295f; })

Hi, since a while now, I've noticed that in Xcode 15 (beta 8), my iOS device running iOS 17 (latest beta), I can't seem to disable the setting "Connect via Network" in the Devices and Simulators window. The controls are disabled, and stuck to 'on'. I often also have issues with the 'Installing to device' step while development my apps, where a reboot of the iPad is required. My guess is that it gets stuck/confused how it is supposed to deploy and my network setup is a bit complicated due to VPN's, tight WiFi security etc. Unpairing the device doesn't help with resetting this setting. After unpairing the top-right header (with the Take Screenshot controls etc...) even still shows the details of the unpaired device. Anyone else has experienced this or know a solution.

I added a new liquid glass icon built with Icon Composer to my app. It works and looks great on iOS 26 but Xcode complains that required icon files for older versions are missing. I still have the old AppIcon in my Asset Catalog but it seems like it's not being used. How do I configure Xcode to use the old icons for iOS 18 and the new icon for iOS 26?

I try adding people as Sandbox Testers to my App, but Apple keeps saying that they already exist on the team, even though they're not. It always show "A user with this email address already exists on the team" It keeps happening with every address I try.

I have a MacMini M2 machine running Sequoia 15.1 OS. On this machine, I am running a Virtual Machine, utilizing the Virtualization.Framework, with the same OS version, 15.1. Logging into my account in the System Settings is successful. Next, I need to add my account in Xcode 16.1. While the initial login is successful, Xcode immediately displays the following error: Decoding Error. There was a failure decoding response: (HTTP 401, 60 bytes) The data couldn’t be read because it isn’t in the correct format. As a result, I cannot see any account information, teams, etc. A very similar bug has been reported at this issue - https://developer.apple.com/forums/thread/759877, but there has been no progress or updates there. Is there any chance to fix this and get it working?

My company's app has a few widgets and a couple of them we do not want to show up on CarPlay due to safety concerns when iOS 26 releases. I understand Apple's recommended way to prevent users from using your widget in CarPlay is to use the .disfavoredLocations([.carPlay], for: [.systemSmall]), and this puts your widget in the 'Other' section of the widgets. https://developer.apple.com/download/files/CarPlay-Developer-Guide.pdf However, this .carPlay widget location is only available in Xcode 26, and our app cannot be built on Xcode 26 yet due to some build errors. We are able to fix those build errors in a separate branch, but we won't be doing our official release builds on Xcode 26 until it is out of beta, which is usually right before iOS 26 officially releases to general audiences. We release our app versions on a monthly cadence, so the version that will be out when iOS 26 comes out is already in testing. Is there any existing way we can disable this widget on CarPlay so it does not appear to work when tapped? Currently, it opens our CarPlay app, but the CarPlay app does nothing with it. On the iPhone, when you tap the widget it opens our app and performs a function. We don't wan't to disable it on the iPhone, just when it's on CarPlay. We don't have time before the app release to implement the same functionality on our CarPlay app. I haven't found any reliable way to detect if the widget is running in the CarPlay location versus the iPhone home screen. Thanks in advance for any assistance.

Xcode 26 Beta 5 Universal: Not able to install iOS 26 Beta 5 simulator on intel macs Below log is shown: Download failed. Domain: DVTDownloadableErrorDomain Code: 41 User Info: { DVTErrorCreationDateKey = "2025-08-08 06:37:48 +0000"; } Download failed. Domain: DVTDownloadableErrorDomain Code: 41 System Information macOS Version 15.5 (Build 24F74) Xcode 26.0 (24198.5) (Build 17A5295f) Is simulator run time for Xcode 26 Beta 5 not given out yet? However I am able to download simulators on Apple Silicon macs with same Universal installer. Has anyone faced similar issue?

I've just downloaded "Additional Tools for Xcode 13" after today's release, and installed "Network Link Conditioner.prefPane" on my macOS Big Sur 11.6 (20G165). But it just don't work. Every time I try to open it an error appeared. Dose the tool only support macOS Monterey which Xcode 13.0 (13A233) dose not support? BTW, the workaround for me is using the tool in "Additional Tools for Xcode 12.5"...