I'm unable to debug on iPhone 12 running iOS 17 beta 3 via network. I'm running Xcode 15 beta 6
Device shows in devices and simulators and I can debug when connected with cable.
However the "Connect Via Network" option is frayed out, oddly however the checkbox is ticked
I'm developing a app using RoomPlan so network connectivity is a must for debugging
Anyone else encountered this and know how to get around this problem
Other devices running iOS 16 connect via network just fine
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Xcode 16.3 repeatedly logs a same message very frequently, as fast as a single thread can. I use Instruments and Console and find out the log is:
Needs flush!
by -[DNTBrotliDecoder decodeBytes:length:] in DNTDocumentationSupport.
The call is on a single non-main thread. I've tried to clear caches and it seems doesn't change. Yet I don't know exact point when the logging starts since launch.
Fortunately, this thread is dispatched at E cores, bringing approximately 2 watts of power load to my Mac.
Environments:
macOS 15.4 (24E248)
Xcode 16.3 (16E140)
M4 chip
Hi,
I've been running Xcode 26 beta ever since Beta 1 and haven't had rebooting problems. Now with Xcode beta (Version 26.0 beta 4 (17A5285i)) I'll be working on a project when the system (Mac mini 2025) suddenly reboots itself. This has been going on since beta 3. I am also running MacOS 26.0 Beta (25A5316i). I have filed a bug report.
Is anyone else having this problem?
Thanks,
Dan Uff
I'm trying to download an iOS Simulator runtime in Xcode 26.2 or 26.1 on macOS 26.1, but the download keeps failing with the following error:
Download failed.
Domain: DVTDownloadableErrorDomain
Code: 41
Failed fetching catalog for assetType (com.apple.MobileAsset.iOSSimulatorRuntime), serverParameters ({ RequestedBuild = 23C54;})
Domain: DVTDownloadsUtilitiesErrorDomain.
Code: -1.
Download failed due to a bad URL. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime)
Domain: com.apple.MobileAssetError.Download
Code: 49
User Info: {checkConfiguration = 1;}
macOS & Xcode Info:
macOS Version: 26.1 (Build 25B78)
Xcode Version: 26.2 (24553) (Build 17C52)
What I've tried so far:
Formatted my Mac and reinstalled Xcode multiple times.
Completely deleted Xcode and its related files several times (/Applications/Xcode.app, caches, preferences).
Tried different internet connections from multiple locations.
Checked Apple servers and verified network.
Attempted downloading other simulator runtimes (fail).
but download fails immediately with DVTDownloadableErrorDomain Code 41 and bad URL error.
Question:
How can I fix the simulator download issue in Xcode 26.2 on macOS 26.1? Is there a known workaround for the bad URL / catalog download error?
If I use the method callAsyncJavaScript() my app will compile, but it won't run on older simulators.
Specifically, in a brand new Storyboard project, I added this to `viewDidLoad():
let webView = WKWebView()
webView.callAsyncJavaScript("1", in: nil, in: .page) { result in
print("\(result)")
}
This runs fine with Xcode 16.3 targeting the iOS 18.4 simulator. It doesn't work if I target the iOS 18.3.1 simulator or the iOS 17.5 simulator. It does work on an iPhone 15 Pro running iOS 18.4 and it works on an iPhone 12 Pro running iOS 17.7.1.
It goes without saying that this used to work on Xcode 16.2 and earlier, since my real project has been using that API for 3 or 4 years now.
The specific error is
dyld[89984]: Symbol not found: _$sSo9WKWebViewC6WebKitE19callAsyncJavaScript_9arguments2inAF17completionHandlerySS_SDySSypGSo11WKFrameInfoCSgSo14WKContentWorldCys6ResultOyyps5Error_pGcSgtF
Referenced from: <82CC68A8-9426-343E-82CD-5443F53A6919> /Users/dave/Library/Developer/CoreSimulator/Devices/69CE58A3-8162-4616-B110-5857E6E2889F/data/Containers/Bundle/Application/3F27AAA0-8E96-437D-A1F4-DECD2E1A95B5/CallAsyncJavascript.app/CallAsyncJavascript.debug.dylib
Expected in: <E11EC0F5-2AD1-3402-AB03-31A85EA6EB3A> /Library/Developer/CoreSimulator/Volumes/iOS_21F79/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 17.5.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/WebKit.framework/WebKit
Unknown error from LeakAgent. errorStatus: 2
Domain: XRMemoryGraphDebuggerErrorDomain
Code: 5
User Info: {
DVTErrorCreationDateKey = "2025-04-01 02:49:23 +0000";
DVTRadarComponentKey = 637311;
}
Event Metadata: com.apple.dt.memory_graph_capture : {
"debugSession_coalescedState" = 1;
"debugSession_currentStackFrame" = "mach_msg2_trap";
"debugSession_currentThread" = "Thread 1";
"debugSession_isSynthetic" = 0;
"debugSession_state" = 1;
"device_identifier" = "00008110-000154D00EEB801E";
"device_isCoreDevice" = 1;
"device_model" = "iPhone14,2";
"device_osBuild" = "18.4 (22E240)";
"device_platform" = "com.apple.platform.iphoneos";
"device_thinningType" = "iPhone14,2";
"dvt_coredevice_version" = "443.19";
"dvt_coresimulator_version" = "1010.10";
"dvt_mobiledevice_version" = "1784.102.1";
"launchSession_schemeCommand" = Run;
"launchSession_state" = 2;
"launchSession_targetArch" = arm64;
"memgraphDebugger_duration_ms" = 0;
"memgraphDebugger_precedingCount" = 1;
"memgraphDebugger_status" = 5;
"param_debugger_attachToExtensions" = 0;
"param_debugger_attachToXPC" = 1;
"param_debugger_type" = 3;
"param_destination_isProxy" = 0;
"param_destination_platform" = "com.apple.platform.iphoneos";
"param_diag_113575882_enable" = 0;
"param_diag_MainThreadChecker_stopOnIssue" = 0;
"param_diag_MallocStackLogging_enableDuringAttach" = 0;
"param_diag_MallocStackLogging_enableForXPC" = 1;
"param_diag_allowLocationSimulation" = 1;
"param_diag_checker_tpc_enable" = 1;
"param_diag_gpu_frameCapture_enable" = 0;
"param_diag_gpu_shaderValidation_enable" = 0;
"param_diag_gpu_validation_enable" = 0;
"param_diag_guardMalloc_enable" = 0;
"param_diag_memoryGraphOnResourceException" = 0;
"param_diag_mtc_enable" = 1;
"param_diag_queueDebugging_enable" = 1;
"param_diag_runtimeProfile_generate" = 0;
"param_diag_sanitizer_asan_enable" = 0;
"param_diag_sanitizer_tsan_enable" = 0;
"param_diag_sanitizer_tsan_stopOnIssue" = 0;
"param_diag_sanitizer_ubsan_enable" = 0;
"param_diag_sanitizer_ubsan_stopOnIssue" = 0;
"param_diag_showNonLocalizedStrings" = 0;
"param_diag_viewDebugging_enabled" = 1;
"param_diag_viewDebugging_insertDylibOnLaunch" = 1;
"param_install_style" = 2;
"param_launcher_UID" = 2;
"param_launcher_allowDeviceSensorReplayData" = 0;
"param_launcher_kind" = 0;
"param_launcher_style" = 99;
"param_launcher_substyle" = 0;
"param_runnable_appExtensionHostRunMode" = 0;
"param_runnable_productType" = "com.apple.product-type.application";
"param_structuredConsoleMode" = 1;
"param_testing_launchedForTesting" = 0;
"param_testing_suppressSimulatorApp" = 0;
"param_testing_usingCLI" = 0;
"sdk_canonicalName" = "iphoneos18.4";
"sdk_osVersion" = "18.4";
"sdk_variant" = iphoneos;
}
System Information
macOS Version 15.3.2 (Build 24D81)
Xcode 16.3 (23785) (Build 16E140)
Timestamp: 2025-04-01T10:49:23+08:00
Today's Xcode release won't download the visionOS SDK, gives a 'network error'.
Topic:
Developer Tools & Services
SubTopic:
Xcode
I can find the Team ID for a registered development account by going to:developer.apple.com > Account > Membership > Team IDI'm sure that a similar ID exists for the Personal Team. If I select my personal team in xcode and then open MyProject.xcodeproj > project.pbxproj, I can find said ID by looking for DEVELOPMENT_TEAM. But this is a rather hacky way to find my personal team ID. Are there other simpler ways to find it?
I’m using macOS Tahoe 26, and Xcode is version 26.2. I’ve tried all the methods suggested online, but I still can’t download it. In addition, iOS 26.* and iOS 18.* simulators also fail to download.
The error messages are shown below.
Download failed.
Domain: DVTDownloadableErrorDomain
Code: 41
User Info: {
DVTErrorCreationDateKey = "2026-01-06 01:25:11 +0000";
}
Download failed.
Domain: DVTDownloadableErrorDomain
Code: 41
Failed fetching catalog for assetType (com.apple.MobileAsset.iOSSimulatorRuntime), serverParameters ({
RequestedBuild = 23C54;
})
Domain: DVTDownloadsUtilitiesErrorDomain
Code: -1
Download failed due to a general networking error. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime)
Domain: com.apple.MobileAssetError.Download
Code: 47
User Info: {
tryAgainLater = 1;
}
System Information
macOS Version 26.0 (Build 25A354)
Xcode 26.2 (24553) (Build 17C52)
Timestamp: 2026-01-06T09:25:11+08:00
Hey,
so I wanted to pull from the Github project repository and XCode asked me login again. Forgot my password so I tried a wrong one and now it keeps asking for my Username and Access token, when I actually just want to login with my password. Doesn't let me choose between the too, not even when adding the account through preferences. Anyone know how to just login with password and the reason for this -pardon me- absolutely idiotic choice of not letting the user choose?
Hi,
I am reaching out to seek assistance with a persistent code signing issue that is preventing our team from installing our iOS app, "Scoopz" (https://apps.apple.com/us/app/scoopz-real-life-real-video/id6449206831) on physical devices. We suspect there may be an issue with our Apple Developer account, as we have exhausted all standard troubleshooting steps without success. Below, I’ve provided details about the issue, the error logs, and the steps we’ve taken.
Issue Description:
When attempting to install the app on an iPhone using Xcode, we encounter the following error:
Unable to Install “Scoopz: Debug”
Domain: IXUserPresentableErrorDomain
Code: 14
Recovery Suggestion: Failed to verify code signature of /[REDACTED_PATH]/OurApp.app : 0xe8008018 (The identity used to sign the executable is no longer valid.)
The app builds successfully to the iOS Simulator and can be released to the App Store without issues, but it fails to debug on physical devices.
Steps Taken:
Our team has attempted the following troubleshooting steps without resolving the issue:
Verified that our Apple Developer account is active and our team membership is valid.
Checked certificates in Keychain Access and the Apple Developer Portal, ensuring they are not expired or revoked. We created and installed new Apple Development certificates.
Confirmed that the provisioning profile includes the target device’s UDID, is associated with a valid certificate, and is not expired. We regenerated and reinstalled the profile. We tried both xcode managed and manually installed profiles.
Cleaned the Xcode build folder, deleted the app from the device, and rebuilt the project.
Despite these efforts, the issue persists across our entire development team, leading us to believe there may be a problem with our Apple Developer account or its associated certificates/profiles.
Request for Assistance:
We kindly request your help to:
Investigate any potential issues with our Apple Developer account that could be causing this code signing error.
Verify the status of our certificates and provisioning profiles on Apple’s servers.
Provide guidance on any additional steps or configurations needed to resolve the error.
If necessary, suggest how we can escalate this issue for further investigation.
Full error log:
Unable to Install “Scoopz: Debug”
Domain: IXUserPresentableErrorDomain
Code: 14
Recovery Suggestion: Failed to verify code signature of /[REDACTED_PATH]/OurApp.app : 0xe8008018 (The identity used to sign the executable is no longer valid.)
Please ensure that the certificates used to sign your app have not expired. If this issue persists, please attach an IPA of your app when sending a report to Apple.
User Info: {
DVTErrorCreationDateKey = "2025-08-20 23:50:11 +0000";
IDERunOperationFailingWorker = IDEInstallCoreDeviceWorker;
}
Failed to install the app on the device.
Domain: com.apple.dt.CoreDeviceError
Code: 3002
User Info: {
***
}
Unable to Install “Scoopz: Debug”
Domain: IXUserPresentableErrorDomain
Code: 14
Failure Reason: This app cannot be installed because its integrity could not be verified.
Recovery Suggestion: Failed to verify code signature of /[REDACTED_PATH]/OurApp.app : 0xe8008018 (The identity used to sign the executable is no longer valid.)
Failed to verify code signature of /[REDACTED_PATH]/OurApp.app : 0xe8008018 (The identity used to sign the executable is no longer valid.)
Domain: MIInstallerErrorDomain
Code: 13
User Info: {
FunctionName = "+[MICodeSigningVerifier _validateSignatureAndCopyInfoForURL:withOptions:error:]";
LegacyErrorString = ApplicationVerificationFailed;
LibMISErrorNumber = "-402620392";
SourceFileLine = 78;
}
Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : {
"device_identifier" = "-*********";
"device_isCoreDevice" = 1;
"device_model" = "iPhone16,2";
"device_osBuild" = "17.1 (21B80)";
"device_platform" = "com.apple.platform.iphoneos";
"device_thinningType" = "iPhone16,2";
"dvt_coredevice_version" = "397.21";
"dvt_coresimulator_version" = 987;
"dvt_mobiledevice_version" = "1784.101.1";
"launchSession_schemeCommand" = Run;
"launchSession_state" = 1;
"launchSession_targetArch" = arm64;
"operation_duration_ms" = 4926;
"operation_errorCode" = 14;
"operation_errorDomain" = IXUserPresentableErrorDomain;
"operation_errorWorker" = IDEInstallCoreDeviceWorker;
"operation_name" = IDERunOperationWorkerGroup;
"param_debugger_attachToExtensions" = 0;
"param_debugger_attachToXPC" = 1;
"param_debugger_type" = 3;
"param_destination_isProxy" = 0;
"param_destination_platform" = "com.apple.platform.iphoneos";
"param_diag_113575882_enable" = 0;
"param_diag_MainThreadChecker_stopOnIssue" = 0;
"param_diag_MallocStackLogging_enableDuringAttach" = 0;
"param_diag_MallocStackLogging_enableForXPC" = 1;
"param_diag_allowLocationSimulation" = 1;
"param_diag_checker_tpc_enable" = 1;
"param_diag_gpu_frameCapture_enable" = 0;
"param_diag_gpu_shaderValidation_enable" = 0;
"param_diag_gpu_validation_enable" = 0;
"param_diag_guardMalloc_enable" = 0;
"param_diag_memoryGraphOnResourceException" = 0;
"param_diag_mtc_enable" = 1;
"param_diag_queueDebugging_enable" = 1;
"param_diag_runtimeProfile_generate" = 0;
"param_diag_sanitizer_asan_enable" = 0;
"param_diag_sanitizer_tsan_enable" = 0;
"param_diag_sanitizer_tsan_stopOnIssue" = 0;
"param_diag_sanitizer_ubsan_enable" = 0;
"param_diag_sanitizer_ubsan_stopOnIssue" = 0;
"param_diag_showNonLocalizedStrings" = 0;
"param_diag_viewDebugging_enabled" = 1;
"param_diag_viewDebugging_insertDylibOnLaunch" = 1;
"param_install_style" = 2;
"param_launcher_UID" = 2;
"param_launcher_allowDeviceSensorReplayData" = 0;
"param_launcher_kind" = 0;
"param_launcher_style" = 99;
"param_launcher_substyle" = 0;
"param_runnable_appExtensionHostRunMode" = 0;
"param_runnable_productType" = "com.apple.product-type.application";
"param_structuredConsoleMode" = 1;
"param_testing_launchedForTesting" = 0;
"param_testing_suppressSimulatorApp" = 0;
"param_testing_usingCLI" = 0;
"sdk_canonicalName" = "iphoneos18.0";
"sdk_osVersion" = "18.0";
"sdk_variant" = iphoneos;
}
System Information
macOS Version 15.4.1 (Build 24E263)
Xcode 16.0 (23051) (Build 16A242d)
Timestamp: 2025-08-20T16:50:11-07:00
Out of nowhere I got some red banner on top of my iPhone 13 mini / iOS 17.5. I cannot pin point the root cause of this. What I can say is that it only happens to Simulators of a certain type, e.g. iPhone 12 and 13 mini, but not iPhone 14 for example.
I have installed Xcode 26.1.0 and 26.1.1, out of which 26.1.0 is selected:
$ xcode-select -p
/Applications/Xcode-26.1.0.app/Contents/Developer
And following runtimes:
$ xcrun simctl runtime list
== Disk Images ==
-- iOS --
iOS 17.5 (21F79) - CF933623-A258-44F8-B248-C0F25C0C343B (Ready)
iOS 26.1 (23B80) - D11C3CDC-EE3D-44CC-8B92-9B7D00B54B0B (Ready)
Total Disk Images: 2 (14.6G)
Installing the newer 26.1 23B86 runtime doesn't help either.
I know there are several existing threads on this topic but things keep changing.
The release notes for Xcode 26 beta 3 have the following statements for a couple of resolved issues:
Asset Catalog
Fixed: Unable to set Icon Composer icon as alternate iOS icon (153305178) (FB18025356)
Icon Composer
Fixed: Icon Composer icons back deploy to older versions of iOS, macOS, and watchOS with inconsistent rendering. (152258860)
I had a working solution under beta 1 and beta 2 for both of these. But under beta 3, I am now seeing the new glass icons for my app when running on a simulated iOS 18 device. This is happening for both the main app icon and any alternates. This contradicts the statement that beta 3 fixes this issue.
There is no documentation (that I can find) describing how you are supposed to support old icons for iOS 18 and new glass icons for iOS 26. There is no documentation for how to support alternate glass icons for iOS 26.
What I'm doing at the moment (that worked before beta 3) was to have the normal iOS 18 app icons in the Asset catalog and to have the new glass icons added to the project. The filenames for the glass .icon files have the same name as the app icons in the Assets catalog. This worked under beta 1 and beta 2. And despite the Xcode 26 beta 3 release notes stating that Icon Composer icons no longer back deploy to iOS 18, I'm seeing the opposite. Beta 3 now does the opposite of that statement.
Does anyone have a working solution that supports old iOS 18 app icons and new iOS 26 glass icons using Xcode 26 beta 3?
Note, all of my testing is with simulated iOS devices and I'm running Xcode 26 beta 3 under macOS 15.5. Maybe that's an issue?
I'm working on a FileProvider which allows access to encrypted files in Dropbox; I can successfully read and present the decrypted files, so I know it's basically working. But I'm having problems getting FileProvider to re-enumerate a folder when its encryption status changes.
When the FileProvider receives an update notification saying a folder is now encrypted, I use signalEnumerator to re-enumerate the folder:
FileProviderExtension.manager?.signalEnumerator(for: existingItem.itemIdentifier, completionHandler: { (ourError : Error?) -> Void in
if let ourError = ourError {
log("notifyCallback: mount / unmount failed re-enumeration: \(ourError)")
} else {
log("notifyCallback: mount / unmount signalled re-enumeration; pending")
}
})
The log reports that the re-enumeration is pending... but as far as I can tell, neither enumerateItems nor enumerateChanges is called on the folder's item unless a Finder window is actually open for that folder. This means that, when an app other than Finder tries to access the files through the filesystem, it doesn't see the updated set of filenames.
(For further reference: I've added code to both enumerateItems and enumerateChanges, so that if the call has been triggered by a recent folder-encryption notification, it retrieves a complete set of items from the Dropbox folder. If a retrieved file has an encrypted filename, it reports it as a modified item and returns its filename in-clear; if the filename isn't encrypted, it doesn't return the item (for enumerateItems) or returns it as a deleted item (for enumerateChanges). This approach seems to work successfully for listing folders with a constant state; it's only if the user encrypts / decrypts a folder without currently having a Finder window open inside that folder that I'm not seeing a refresh.)
Any advice on how I can force a re-enumeration without a Finder window currently being displayed?
When I click on the memory graph, xcode cannot create the memory graph and reports an error. All the error messages below are:
I have tried to clarify any cache。
an unknown error occurred launching the helper task
Domain: DTLeaksService
Code: -1
User Info: {
DVTErrorCreationDateKey = "2025-03-20 07:37:28 +0000";
DVTRadarComponentKey = 637311;
}
Event Metadata: com.apple.dt.memory_graph_capture : {
"debugSession_coalescedState" = 2;
"debugSession_isSynthetic" = 0;
"debugSession_state" = 2;
"device_identifier" = "00008020-000924663A90003A";
"device_isCoreDevice" = 1;
"device_model" = "iPhone11,2";
"device_osBuild" = "18.4 (22E5222f)";
"device_platform" = "com.apple.platform.iphoneos";
"device_thinningType" = "iPhone11,2";
"dvt_coredevice_version" = "443.19";
"dvt_coresimulator_version" = "1010.10";
"dvt_mobiledevice_version" = "1784.101.1";
"launchSession_schemeCommand" = Run;
"launchSession_state" = 2;
"launchSession_targetArch" = arm64;
"memgraphDebugger_duration_ms" = 3059;
"memgraphDebugger_precedingCount" = 1;
"memgraphDebugger_status" = "-1";
"param_debugger_attachToExtensions" = 0;
"param_debugger_attachToXPC" = 1;
"param_debugger_type" = 3;
"param_destination_isProxy" = 0;
"param_destination_platform" = "com.apple.platform.iphoneos";
"param_diag_113575882_enable" = 0;
"param_diag_MainThreadChecker_stopOnIssue" = 0;
"param_diag_MallocStackLogging_enableDuringAttach" = 0;
"param_diag_MallocStackLogging_enableForXPC" = 1;
"param_diag_allowLocationSimulation" = 1;
"param_diag_checker_tpc_enable" = 1;
"param_diag_gpu_frameCapture_enable" = 0;
"param_diag_gpu_shaderValidation_enable" = 0;
"param_diag_gpu_validation_enable" = 0;
"param_diag_guardMalloc_enable" = 0;
"param_diag_memoryGraphOnResourceException" = 0;
"param_diag_mtc_enable" = 1;
"param_diag_queueDebugging_enable" = 1;
"param_diag_runtimeProfile_generate" = 0;
"param_diag_sanitizer_asan_enable" = 0;
"param_diag_sanitizer_tsan_enable" = 0;
"param_diag_sanitizer_tsan_stopOnIssue" = 0;
"param_diag_sanitizer_ubsan_enable" = 0;
"param_diag_sanitizer_ubsan_stopOnIssue" = 0;
"param_diag_showNonLocalizedStrings" = 0;
"param_diag_viewDebugging_enabled" = 1;
"param_diag_viewDebugging_insertDylibOnLaunch" = 1;
"param_install_style" = 2;
"param_launcher_UID" = 2;
"param_launcher_allowDeviceSensorReplayData" = 0;
"param_launcher_kind" = 0;
"param_launcher_style" = 99;
"param_launcher_substyle" = 0;
"param_runnable_appExtensionHostRunMode" = 0;
"param_runnable_productType" = "com.apple.product-type.application";
"param_structuredConsoleMode" = 1;
"param_testing_launchedForTesting" = 0;
"param_testing_suppressSimulatorApp" = 0;
"param_testing_usingCLI" = 0;
"sdk_canonicalName" = "iphoneos18.4";
"sdk_osVersion" = "18.4";
"sdk_variant" = iphoneos;
}
System Information
macOS Version 15.4 (Build 24E5238a)
Xcode 16.3 (23773.5) (Build 16E5129f)
Timestamp: 2025-03-20T15:37:28+08:00
I've connected my Claude account into Coding Intelligence and working properly (opening a web browsing and connecting my account), but when I press Claude Agent it sayes that I have to login againt. When I press the Account login with Claude.ai account, a web browser is opened, but it never finished the flow and I have an infinite spinner.
Apple M2 Pro with macOS 26.2 (25C56)
Topic:
Developer Tools & Services
SubTopic:
Xcode
I have been using Xcode Version 26.1.1 on macOS Tahoe Version 26.1. In VIM mode, whenever I quickly tap d twice, to delete the complete line, most of the time Xcode crashes. Is anyone else facing this issue? Should I move to any older version of Xcode or any other solve for this?
After updating my system to macOS Tahoe 26.1 and Xcode 26.1, all breakpoints in my project fail to work. When I run the application in Debug mode, any enabled breakpoint (blue) immediately becomes disabled (grayed out) the moment the app launches. The application runs, but the debugger never stops.
This issue occurs in any location, including in the application's init() method, which should always be hit. This behavior suggests that the LLDB debugger is failing to attach to the process at launch or is being instructed not to enable breakpoints.
System Configuration:
Mac Model: MacBook Pro 14" (2021), Apple M1 Pro
macOS Version: Tahoe 26.1
Xcode Version: 26.1
Project Type: SwiftUI App for macOS
Troubleshooting Steps Performed (All Unsuccessful):
We have performed an extensive series of troubleshooting steps to resolve the issue, none of which have worked. These steps include:
Basic Project Cleaning:
Cleaned the build folder (Product > Clean Build Folder).
Deleted the entire DerivedData directory.
Deleted the project's xcuserdata folder.
Xcode & System Procedures:
Restarted Xcode multiple times.
Rebooted the Mac multiple times.
Reinstalled Xcode Command Line Tools using xcode-select --install.
Reset the Xcode path using sudo xcode-select --reset and sudo xcode-select -s /Applications/Xcode.app/Contents/Developer.
Forced an update of the system's shared cache with xcrun simctl runtime dyld_shared_cache update --all.
Project Build Settings Verification (for Debug configuration):
Build Configuration: Verified that the "Run" scheme is set to Debug.
Optimization Level: Confirmed it is set to No Optimization [-O0].
Debug Information Format: Confirmed it is set to DWARF with dSYM File.
Strip Swift Symbols: Confirmed it is set to No. (This was a new setting noticed after the Xcode update).
Enable Hardened Runtime: Attempted setting this to both Yes and No. The issue persists in both cases.
Validate Workspace: Confirmed it is set to Yes.
Code Signing:
Verified that "Automatically manage signing" is enabled with a valid team.
Manually deleted and re-created the "Apple Development" certificates via Xcode's Accounts settings.
Direct LLDB Testing:
Created a ~/.lldbinit file.
Using breakpoint list, confirmed that LLDB starts with "No breakpoints currently set," indicating that Xcode is likely not passing the breakpoints to the debugger.
Using settings set target.process.stop-on-entry true, confirmed that the app still does not stop on entry, suggesting the debugger is failing to attach to the process at all.
Conclusion:
Given that all standard and advanced troubleshooting steps have failed, and the issue started immediately after updating both macOS and Xcode to a non-public release (Tahoe 26.1 / Xcode 26.1), this appears to be a regression or a bug in the new development environment. The failure of stop-on-entry strongly suggests a fundamental issue with the debugger attachment process on this specific OS and Xcode combination.
Hello,
I'm having issues trying to Install the iOS 26.0 + iOS 26.0.1 Simulator on Xcode 26.0.1. I'm getting this error
Download failed as the server said it was a bad request. (Asset download for com.apple.MobileAsset.iOSSimulatorRuntime 39434c057e7b18d2f1447aeb47e9bb6b6dbff077)
I have attached the full logs.
Thanks
xcode-error.txt
Topic:
Developer Tools & Services
SubTopic:
Xcode
I am editing my iOS project in Xcode 16 and want to use the "Swift Compiler - Upcoming Features" section of the build settings to selectively enable the new Swift 6 language features.
I have read the instructions for doing this and have dowloaded an Apple sample project and can see that section under the project and target-level Build Settings in the sample project
However, when I open my Xcode project in XCode 16 that section does not appear.
Is there any way for me to influence how Xcode 16 displays the build settings?
In fact, no "Swift Compiler" sections appear at all under my project Build Settings (All | Combined). There is a "User-Defined" section that has the Swift Version, Compilation Mode and Optimization level.
The project itself is several years old and was on a very old project version. I have upgraded my project document format to "Xcode 16" but it made no difference.
I have compared my project and the sample project in a text editor and both seem to have similar structure. I tried removing unused and outdated settings from my project but that also had no effect.
Is there an alternative to deleting my project file and adding the source files to it? I have a large project with multiple targets so that would be something I'd rather not do.