The app I'm developing is experiencing the following watch dog crash issue. This issue appears to be internal to the OS. Incident Identifier: 989945DB-39FA-45B7-B659-764B8DAF5166 Beta Identifier: 2FE8D2AF-8629-4A08-9AC3-30AF7D5C2214 Hardware Model: iPhone14,5 AppStoreTools: 17A323 AppVariant: 1:iPhone14,5:17.4 Beta: YES Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd [1] Date/Time: 2025-09-23 10:28:24.4515 +0900 Launch Time: 2025-09-23 10:23:28.3571 +0900 OS Version: iPhone OS 17.7.1 (21H216) Release Type: User Baseband Version: 3.50.04 Report Version: 104 Exception Type: EXC_CRASH (SIGKILL) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: FRONTBOARD 2343432205 <RBSTerminateContext| domain:10 code:0x8BADF00D explanation:scene-update watchdog transgression: app<(539E942D-7AC6-43F0-9BBC-98C5CBB3D8F9)>:340 exhausted real (wall clock) time allowance of 10.00 seconds ProcessVisibility: Foreground ProcessState: Running WatchdogEvent: scene-update WatchdogVisibility: Background WatchdogCPUStatistics: ( "Elapsed total CPU time (seconds): 14.700 (user 4.730, system 9.970), 22% CPU", "Elapsed application CPU time (seconds): 10.995, 17% CPU" ) reportType:CrashLog maxTerminationResistance:Interactive> Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libsystem_kernel.dylib 0x1e71f96c8 mach_msg2_trap + 8 1 libsystem_kernel.dylib 0x1e71fcec8 mach_msg2_internal + 80 2 libsystem_kernel.dylib 0x1e71fcde0 mach_msg_overwrite + 436 3 libsystem_kernel.dylib 0x1e71fcc20 mach_msg + 24 4 CoreFoundation 0x19e56cf3c __CFRunLoopServiceMachPort + 160 5 CoreFoundation 0x19e56c5e0 __CFRunLoopRun + 1208 6 CoreFoundation 0x19e56bcb8 CFRunLoopRunSpecific + 608 7 GraphicsServices 0x1e2fc11a8 GSEventRunModal + 164 8 UIKitCore 0x1a0ba6ae8 -[UIApplication _run] + 888 9 UIKitCore 0x1a0c5ad98 UIApplicationMain + 340 10 UIKitCore 0x1a0dd4504 0x1a079c000 + 6522116 11 MyApp 0x103b1402c 0x102aa4000 + 17236012 12 dyld 0x1c1d4c154 start + 2356

Hello everyone, I'm encountering a frustrating issue with Xcode 26 and the iOS Simulator selection, and I'd appreciate any insight from the community. Problem Overview I have updated my Xcode to version 26.0. I have successfully installed the iOS 26 SDK and the iOS 26 Simulator runtime via Xcode's component settings. However, when I open an older, existing project, the device selection dropdown menu does not list the iOS 26 simulator. I can only select older versions, such as my locally installed iOS 18.6 simulator. Key Finding (Diagnosis) New Project Test: When I create a brand new Xcode project, the iOS 26 simulator is correctly available and runs as expected. Conclusion: This strongly suggests the issue lies with a specific configuration setting in the existing (old) project, rather than the Xcode installation itself. Troubleshooting Steps Taken I suspect a project-level configuration is somehow blocking the display of the new simulator. I've already checked: General -> Deployment Target: This is set to an older version, but theoretically shouldn't hide the simulator list. Build Settings -> Base SDK: This is set to the latest iOS SDK. Has anyone else experienced this behavior when upgrading projects to support iOS 26? What specific configuration files (e.g., .xcodeproj settings, Podfile configurations, or specific Build Settings) should I check to ensure my old project properly recognizes and displays the newly installed iOS 26 simulator? Any pointers or solutions would be greatly appreciated! Thank you.

Hi everyone, have any of you tried running an app from Xcode 16.x (during development, running on device) on one of the iPhone 17 models? I'd like to know whether it still works or if someone would need to update to Xcode 26 for that to work.

Does Xcode 26 still support creating pull requests and/or viewing comments from GitHub pull requests associated with the current branch? This used to be possible, but I cannot get it to work with the current version of Xcode (26.0.1). The "Create Pull Request" menu item takes me to github.com directly, instead of presenting a nice UI menu; hence I'm wondering.

Hey there Just updated to Xcode 26 on mac OS Sequoia (MBP M1 Max 32GB, 2021, so you know, still pretty decent and capable). Xcode is super slow on building, but also on editing. There is a lag between what I type and what is displayed. Am I the only one experiencing this? Is there something I should look into?

My app hangs and I get this error when using an inspector view on macos tahoe. Changing to a different type of view resolves the issue. 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. <SwiftUI.AppKitWindow: 0x8897e0000> 0xb4d8 (46296) {{1004, 182}, {1254, 948}} en Future marking as needing Update Constraints in Window might be ignored. 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. <SwiftUI.AppKitWindow: 0x8897e0000> 0xb4d8 (46296) {{1004, 182}, {1254, 948}} en; (user info absent)

Hi, as described by the subject, I'm trying to find a way to remove the preinstalled iOS support via command line tool. I need to do that because I need to use the universal architectureVariant in order to build on old Intel-based iOS Simulators, but on iOS 26. As described in this page, I can use this command to download the architecture I need xcodebuild -downloadPlatform iOS -architectureVariant universal however, launching this command I receive this error iOS is already downloaded as arm64Only. To replace with universal, first delete the existing one. Is there any way to remove the current installed iOS platform via command line? In particular I'm serching for a way to do what the button "Delete" in the attached screen does. Thank you

Hi guys, after updating to tvOS 26 it is not possible to disable screensaver using AVPlayer.preventsDisplaySleepDuringVideoPlayback. We are streaming TV programs continuously and when player is in full creen we disable screensaver by setting preventsDisplaySleepDuringVideoPlayback = true When leaving player screen and navigating to Home or EPG where player continues to play in the background we set preventsDisplaySleepDuringVideoPlayback = false to enable screen saver in which case after set time screensaver activates. Disabling screensaver appears to be working only when starting the app for the first time, but when making the first transition out of the player and calling preventsDisplaySleepDuringVideoPlayback = false for the first time, then any subsequent change of preventsDisplaySleepDuringVideoPlayback to true has no effect. Result is that player is playing in full screen, but after set period (e.g. 2 minutes) screen saver activates, which is very bad user experience making TV app unusable. I tried using Xcode 26 and targetting tvOS 17 and higher. I installed Xcode 16.4 and rebuilt the app, but I see the same problem with screensaver. Xcode 16.4 and tvOS 17 target worked before. It appears to be related to tvOS 26 not to SDK itself. Is there perhaps a new API to disable screensaver? Is preventsDisplaySleepDuringVideoPlayback obsolete or could it be intention to disallow developers disabling screensaver? Do we need to notify all users to set screensaver time to higher value or Never if they want to watch TV for all day without touching remote? Not sure if it is a bug in tvOS 26 or purposely changed behavior. Does anybody know? Thanks.

When I try to build my project with Xcode 26.1 beta (17B5025f) it freezes a lot. The steps are as follows: Open my project with the aforementioned Xcode Start a build of one of my schemes Open a browser or any other app above the Xcode window Try to present the Xcode window on the foreground Result: Xcode freezes I cleared the Derived Data and it still happens

Hello, I am currently working on personal project based on Matter. I need to create a Basic Video Player as specified in Matter's standard embedding the Media Playback Cluster. I went through the reading of how Apple now supports Matter as a standard : linkText My understanding of the following schematic, is alongside : HomeKit Accessory Protocol (HAP) Framework API Related HAP accessories underneath the homeKit framework. Developpers also find under the Homekit framework : CHIP (Connected Home IP) Framework API Related Matter accessories this time Both types of accessories/devices can be commissioned in the HomeKit ecosystem seemlessly. Each framework has it's documentation : HAP : https://developer.apple.com/documentation/homekit/hmhomemanager CHIP : https://developer.apple.com/documentation/matter I want through the process of installing XCode and the HomeKit Accessory Simulator. In the list of HomeKit Accessories I did not see any Media related devices : The list of currently supported devices is limited as I read here and will be enriched with time : https://support.apple.com/en-us/102135#:~:text=The%20Home%20app%20currently%20supports,%2C%20temperature%2C%20and%20humidity). In the meantime, as I read the matter documentation, I read several references made to the Media Playback : https://developer.apple.com/documentation/matter/mtrclustermediaplayback https://developer.apple.com/documentation/matter/mtrbaseclustermediaplayback https://developer.apple.com/documentation/matter/clusters#Interacting-with-the-Media-Playback-cluster My questions are : Are Matter Basic Video Players, (Media Playback) supported in HomeKit ? Why aren't they listed in HomeKit Accessory Simulator ? How can I add a Basic Video Player in HomeKit and display it's Media Playback controls once I have added the device to HomeKit ? Thank you for your Answer. Regards David

Xcode 26 run an very old iOS project, when run in iPhone 17 series simulator, it get XXX's architectures (Intel 64-bit) include none that iPhone 17 can execute (arm64), and when I run in iPhone device, it works correctly. The project setting is in the picture below.

Hi, I’m facing an issue when trying to build a Unity AR project for iOS using Xcode 26.0.1 (Build 17A400) on macOS Tahoe. The build always fails with the following error: Assertion failed: (it != _dylibToOrdinal.end()), function dylibToOrdinal, file OutputFile.cpp, line 5196. Details: Unity versions tested: 6.0.0 (6000.0.57f1), 6.2.5, and 6.3 beta Xcode: 26.0.1 (latest) macOS: Tahoe Even a fresh Unity AR template project fails (no external plugins or modifications) Deleting derived data, reinstalling Xcode, and re-exporting from Unity doesn’t resolve it Notes: Downgrading Xcode is not possible because macOS Tahoe requires the latest version. Android builds work fine; the issue only happens on iOS. Question: Has anyone else encountered this linker assertion in Xcode 26 with Unity builds? Is this a known bug in the new Xcode linker, or is there a recommended workaround until Unity or Apple updates their toolchain? Thanks in advance for any guidance!

Hi everyone, I recently updated to Xcode 26.0 and noticed that the “Extract Subview” refactoring option seems to be missing. Now, in Xcode 26, the only options I see under Editor -> Refactor -> are: Extract to Selection File Extract to Method Extract to Variable Extract All Occurrences But there’s no Extract Subview as there was before. Was Extract Subview intentionally removed in Xcode 26? Or is it hidden behind a new menu location or renamed?

We are seeing some unexpected differences in the appearance of our App when run on a real iPhone (iOS 26 final release) compared to iOS 26 simulators in Xcode 26. Our App run in the iOS 26 simulators (for any iPhone model we try) shows more Liquid Glass effects / artifacts than when run on real devices: In Light Mode buttons in the top Navigation Bar have a surrounding bubble on the simulators. (See attached screen shots.) A SwiftUI Picker element shows more elaborate Liquid Glass transition effects. Also: some UI elements are positioned differently on the simulators compared to a real device. (See the search field under the header on the attached screen shots.) The simulators have in the past been very faithful to the real devices. Is there a setting that controls this behaviour? For the simulator I have: macOS 26.0 Xcode Version 26.0 (17A324) Simulator is iPhone 15 / iOS 26.0 (23A343) Real device is: iPhone 16e iOS 26.0 (23A341)

Does anyone know how to solve this? Suddenly X-code stopped allowing me to build on my iPhone. Works fine in simulato. Failed to install embedded profile for[…] (This provisioning profile does not have a valid signature (or it has a valid, but untrusted signature).) Domain: IXUserPresentableErrorDomain Code: 14 Failure Reason: This app cannot be installed because its integrity could not be verified. Domain: MIInstallerErrorDomain Code: 13 User Info: { FunctionName = "-[MIInstallableBundle _installEmbeddedProfilesWithError:]"; LegacyErrorString = ApplicationVerificationFailed; LibMISErrorNumber = "-402620390"; SourceFileLine = 322;

I have created a build tool plugin in one of my SPM packages, and am trying to get it working in my project. It works fine when I build from Xcode, or have at least built the project in Xcode once before with the plugin. But if I try to build the project using xcodebuild on a machine where I have never built the project before, it fails with this error: error: '2.3.0': Invalid manifest (compiled with: ["/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc", "-vfsoverlay", "/var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/T/TemporaryDirectory.BWwJWG/vfs.yaml", "-L", "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/pm/ManifestAPI", "-lPackageDescription", "-Xlinker", "-rpath", "-Xlinker", "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/pm/ManifestAPI", "-target", "arm64-apple-macosx14.0", "-sdk", "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk", "-F", "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks", "-F", "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks", "-I", "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib", "-L", "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib", "-swift-version", "5", "-I", "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/pm/ManifestAPI", "-sdk", "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.5.sdk", "-package-description-version", "5.7.0", "/private/var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/T/SwiftTemplate/1FA05B4D-851D-4D2B-ADD6-E5A0DF70CD37/2.3.0/Package.swift", "-o", "/var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/T/TemporaryDirectory.HUxmAq/2.3.0-manifest"]) <unknown>:0: error: error opening '/var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/C/clang/ModuleCache/PackageDescription-3TZGMDBKTLI5E.swiftmodule' for output: /var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/C/clang/ModuleCache/PackageDescription-3TZGMDBKTLI5E.swiftmodule: Operation not permitted /private/var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/T/SwiftTemplate/1FA05B4D-851D-4D2B-ADD6-E5A0DF70CD37/2.3.0/Package.swift:4:8: error: failed to build module 'PackageDescription' for importation due to the errors above; the textual interface may be broken by project issues or a compiler bug 2 | // The swift-tools-version declares the minimum version of Swift required to build this package. 3 | 4 | import PackageDescription | `- error: failed to build module 'PackageDescription' for importation due to the errors above; the textual interface may be broken by project issues or a compiler bug 5 | 6 | let package = Package( On a machine where this isn't working, if I open Xcode and build the project once, then xcodebuild will succeed. Even if the Xcode build fails because I didn't choose to trust the plugin. I first ran into this on our CI server, and confirmed the same behavior by creating a brand new user account on my Mac and reproducing there. Oddly I am not able to recreate the failure after it is fixed by Xcode, even after deleting every conceivable SPM related cache. This is the command I used (I've added a bunch of sandbox stuff to the command, with no effect): xcodebuild -workspace Zinnia.xcworkspace -scheme Zinnia -disableAutomaticPackageResolution -skipPackagePluginValidation -IDEPackageSupportDisableManifestSandbox=1 -IDEPackageSupportDisablePluginExecutionSandbox=1 OTHER_SWIFT_FLAGS='$(inherited) -disable-sandbox' clean test Here is the output immediately prior to the error: Prepare packages Compile plug-in “PixiteDependencyGenerator” in package “pixitedependency” [debug]: Compiling plugin to executable at /Users/natetemp/Library/Developer/Xcode/DerivedData/Zinnia-aqyjcevbunlgbtgcippbjzhhpyax/Build/Products/PluginExecutables/PixiteDependencyGenerator [debug]: Using compiler /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc [debug]: Plugin compilation output directory '/Users/natetemp/Library/Developer/Xcode/DerivedData/Zinnia-aqyjcevbunlgbtgcippbjzhhpyax/Build/Products/PluginExecutables' [debug]: Computed hash of plugin compilation inputs: 44c01fc622391970b4c18b2a5fa100e2e0fa23e272829e41b575ef79872ec8f2 Apply build tool plug-in “PixiteDependencyGenerator” to target “Zinnia” in project “Zinnia” /usr/bin/sandbox-exec -p "(version 1) (deny default) (import \"system.sb\") (allow file-read*) (allow process*) (allow mach-lookup (global-name \"com.apple.lsd.mapdb\")) (allow file-write* (subpath \"/private/tmp\") (subpath \"/private/var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/T\") ) (deny file-write* (subpath \"/Users/natetemp/projects/pixite/Zinnia\") ) (allow file-write* (subpath \"/Users/natetemp/Library/Developer/Xcode/DerivedData/Zinnia-aqyjcevbunlgbtgcippbjzhhpyax/Build/Intermediates.noindex/BuildToolPluginIntermediates/Zinnia.output/Zinnia/PixiteDependencyGenerator\") (subpath \"/private/var/folders/5_/q4yl04gs2kld1zztqxkqjdgh0000gq/T/TemporaryItems\") ) " /Users/natetemp/Library/Developer/Xcode/DerivedData/Zinnia-aqyjcevbunlgbtgcippbjzhhpyax/SourcePackages/artifacts/pixitedependency/Sourcery/sourcery-2.3.0.artifactbundle/sourcery/bin/sourcery --templates /Users/natetemp/Library/Developer/Xcode/DerivedData/Zinnia-aqyjcevbunlgbtgcippbjzhhpyax/SourcePackages/artifacts/pixitedependency/Sourcery/sourcery-2.3.0.artifactbundle/sourcery/Templates --output /Users/natetemp/Library/Developer/Xcode/DerivedData/Zinnia-aqyjcevbunlgbtgcippbjzhhpyax/Build/Intermediates.noindex/BuildToolPluginIntermediates/Zinnia.output/Zinnia/PixiteDependencyGenerator/GeneratedSources --cacheBasePath /Users/natetemp/Library/Developer/Xcode/DerivedData/Zinnia-aqyjcevbunlgbtgcippbjzhhpyax/Build/Intermediates.noindex/BuildToolPluginIntermediates/Zinnia.output/Zinnia/PixiteDependencyGenerator/Cache --sources /Users/natetemp/projects/pixite/Zinnia/Zinnia For the record, I did ensure that the 3 directories it complains about do exist with proper permissions. Is it possible that the sandbox being applied to the plugin is also being incorrectly applied to something involved in parsing and caching the manifest file? Or if there is something I am doing wrong, please let me know. This is using Xcode 16.4 on macOS 15.5.

Hi everyone, After updating my Mac and Xcode to 26, I’m running into a consistent crash whenever I try to launch an app from Xcode. Environment: Mac: Apple Silicon M3 macOS: 26.0 (25A354) Xcode: 26.0.1 (17A400) Issue: When I press Run on any project (including new, empty projects), Xcode immediately crashes. This started only after updating to the latest macOS and Xcode. Crash details: The crash log shows: Application Specific Signatures: ___localError Thread 0 crashed inside -[IDEScheme _executionOperationForSchemeOperationParameters:...] from IDEFoundation/IDEKit. I also noticed background threads calling DVTPortal (developer portal requests) right before the crash. What I’ve tried so far: Cleared DerivedData, ModuleCache.noindex, and Xcode caches. Signed out/in of my Apple ID in Xcode. Recreated project schemes. Verified provisioning profiles. Reinstalled Xcode 26. Unfortunately, the crash still happens. Question: Is this a known issue with Xcode 26 on Apple Silicon (M3)? Has anyone seen a workaround? Any guidance would be greatly appreciated — I can’t currently launch apps in Xcode at all. Thanks!

I'm working on an AppIcon selector and would like to do something like UIImage(named: "AppIcon-Alternate") to present the icon for the user to choose using the new IconComposer icons. I've done a fair bit of research on this and it looks like this used to be possible (prior to .icon) with workarounds that were later 'fixed' / removed (appending 60x60 to the icon name). The only 'solution' seems to be bundling the exported images into the app itself but this seems like a terrible idea as it massively bloats the app. Assuming we export from the new IconComposer tool and want to include dark mode that's roughly 3MB per icon which is absolutely shocking bloat and so a terrible solution. Looking into the app the Assets.car actually generates png files for these alternate icons. These are in the json as "MultiSized Image" assets. Interestingly using UIImage(named: is actually attempting to load these but fails to resolve an kCSIElementSignature. Also the OS alert when switching alternate icon shows a preview of the icon so this must be privately possible and using Asset Catalog Tinkerer I'm able to see these pngs. This feels like broken API; I'd guess the new icon format is not correctly generating the entry in the Asset.car to link the generated pngs for usage with UIImage(named:) API. Does anyone have pointers for this? This feels like a developer API afterthought or bug but is it intentional? Edit: I've submitted feedback for this FB20341182.

XCode has failed countless times in updates, and every time it fails, it has to be downloaded again. By 2025, the App Store will still be so foolish as not to have download caching function. Previously, there was a separate installation package for XCode, but now the official website does not provide a separate address?

Hello, I appreciate the enhanced productivity brought by ChatGPT and Claude AI integration in Xcode 26, which assists with code completion, refactoring, and documentation directly within the IDE. However, in real-world development environments, teams use a variety of MCP (Model Context Protocol) collaboration tools such as Jira, GitHub, Notion, and Confluence. Currently, there is no official, seamless integration of multiple MCP services with the AI features inside Xcode. For example, it would be extremely beneficial if: AI could automatically fetch and understand issues, tickets, documents, and code context from multiple MCP services, Perform related code modifications, pull request creation, and documentation updates All done intuitively and with minimal steps directly from Xcode. I kindly request that future Xcode releases provide official support for connecting to various MCP APIs, enabling smoother collaboration between AI and multiple team productivity tools all within the IDE environment. Thank you for considering this enhancement.