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Simulator causing Mac audio distortion
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?
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"Network Link Conditioner" in "Additional Tools for Xcode 13" can not be loaded on Big Sur 11.6 (20G165)
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"...
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Jan ’25
AppIntents don't show up in Shortcuts app when in SPM package
Hi there, I successfully created an AppIntent for our app, and when I had it in the same target as our main app it showed up fine in the shortcuts app. Then I realized that many of the new System Control widgets introduced in iOS 18 (e.g. lockscreen, control center) live in the widget extension target, but they also need to reference that same AppIntent. So to fix this, I thought I'd migrate out the code into it's own SPM package that both the WidgetExtension and the Main App processes can reference. However, after doing that and rebuilding, the intent no longer shows up in the Shortcuts app. Furthermore, my AppShortcutsProvider class now has this error when trying to define the list of appShortcuts: App Intent <name> should be in the same target as AppShortcutsProvider Is this intended, and if so, how do we reference the same AppIntent across multiple targets?
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Oct ’25
Xcode 26 Beta 5 Universal: Not able to install iOS 26 Beta 5 simulator on intel macs
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?
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Aug ’25
NSLocationTemporaryUsageDescriptionDictionary crashes Xcode 13
I just submitted a feedback for this (FB9662125) but in the spirit of “share and enjoy”… The cool new Generate Info.plist File feature in Xcode 13 crashes if you try to put an NSLocationTemporaryUsageDescriptionDictionary in your Info.plist file. Here’s a simple repro scenario: Create a minimal iOS app (no Core Data, no tests) Go to target settings → Info tab → Custom iOS Target Properties Click the (+) button on any row to begin inserting a new row Select Privacy - Location Temporary Usage Description Dictionary Click somewhere else or press Return to commit the selection Xcode crashes immediately More generally, it seems that Xcode crashes any time it tries to regenerate your Info.plist file if it contains an NSLocationTemporaryUsageDescriptionDictionary, even if (for example) you manually pasted that dictionary into the file earlier. In that case, merely tapping the (+) button in step 3 above is enough to crash it.
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LLDB error: type for self cannot be reconstructed: type for typename
All is fine in Xcode15, no LLDB errors whatsoever, but in Xcode16 I can't get any variable displayed in the console because of the following error: error: type for self cannot be reconstructed: type for typename "$......." was not found (cached) error: Couldn't realize Swift AST type of self. Hint: using `v` to directly inspect variables and fields may still work. I've checked the output of swift-healthcheck and there are several messages like this: SwiftASTContextForExpressions(module: "ROA", cu: "ROA+ViewLayer.swift")::LoadOneModule() -- Missing Swift module or Clang module found for "UIKit", "imported" via SwiftDWARFImporterDelegate. Hint: Register Swift modules with the linker using -add_ast_path. I added -add_ast_path to the OTHER_LDFLAGS in the faulty module's build settings but no luck. How can I debug my project in Xcode16?
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May ’25
Xcode Beta 5 Metal toolchain download issue
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; })
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Aug ’25
Xcode 16 | xcodebuild fails when providing -destination 'platform=iOS Simulator,name=iPhone 16,arch=x86_64'
Hello. In the Xcode 15 we were using this command in the terminal to run our tests on the Rosetta Simulator: xcodebuild -workspace CoreLibraries.xcworkspace -scheme CoreLibraries -destination 'platform=iOS Simulator,name=iPhone 15,arch=x86_64' test` In the Xcode 16 the same command doesn't work anymore. It produces the error: xcodebuild: error: Unable to find a device matching the provided destination specifier: { platform:iOS Simulator, arch:x86_64, OS:latest, name:iPhone 16 } Unsupported device specifier option. The device “iPhone 16” does not support the following options: arch Please supply only supported device specifier options. Running test directly from the Xcode UI using iPhone 16 (Rosetta) still works fine. Does anyone know how to modify the xcodebuild command to make it work again?
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Jun ’25
Resetting iPhone Mirroring credentials
I had iPhone Mirroring in MacOS 15 working, but something glitched on my iPhone and I had to perform a "Reset All Settings" and now I can no longer connect to my iPhone. I assume that some key has been cached when I connected initially, but I can't figure out how to reset the connection. Does anybody have any suggestion as to how to reset the connection?
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14k
Nov ’24
Augmented Reality app unable to load the image from the camera
I have an app on the App Store for many years enabling users to post text into clouds in augmented reality. Yet last week abruptly upon installing the app on the iPhone the screen started going totally dark and a list of little comprehensible logs came up of the kind: ARSCNCompositor <0x300ad0e00>: ARSCNCompositor (0, 0) initialization failed. Matting is not set up properly. many times, then RWorldTrackingTechnique <0x106235180>: Unable to update pose [PredictorFailure] for timestamp 870.392108 ARWorldTrackingTechnique <0x106235180>: Unable to predict pose [1] for timestamp 870.392108 again several times and then: ARWorldTrackingTechnique <0x106235180>: SLAM error callback: Error Domain=Slam Error Code=7 "Non fatal error occurred due to significant drop in a IMU data" UserInfo={NSDescription=Non fatal error occurred due to significant drop in a IMU data, NSLocalizedFailureReason=SlamEngineNodeGroup Failure: IMU issue: gyro data stream verification failed [Significant data drop]. Failed on timestamp: 870.413247, Last known timestamp: 865.350198, Delta: 5.063049, System timestamp: 870.415781, Delta between system and frame: 0.002534. } and then again the pose issues several times. I hoped the new beta version would have solved the issue, but it was not the case. Unfortunately I do not know if that depends on the beta version or some other issue, given the app may be not installed on the Mac simulator.
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Jan ’25
Xcode Simulator Can't Boot
I am facing a recurring issue with Xcode iOS simulator. I want to preview a SwiftUI for iOS in Xcode, but the Simulator app fails to boot up. I receive the follow error in Xcode: Cannot Preview in this file. Simulator was shutdown during an update. I have tried the following: Deleting Xcode cache Reinstalling iOS Simulator runtimes Completely uninstalling Xcode and deleting all developer data, then reinstalling None of the above steps fix the problem. The only fix I have found is to completely reinstall MacOS 15.4.1. THIS IS TERRIBLE! I have already reinstalled MacOS 15.4.1 once to fix the issue, and I don't want to do it again. If there is another solution, please help me find it! Thank you!!
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Aug ’25
XCode reverts CoreData's .xccurrentversion
I am experiencing an issue where XCode reverts .xccurrentversion file in my iOS app to the first version whenever xcodebuild is run or whenever XCode is started. This means I can build the app and run tests in XCode if I discard the reversion .xccurrentversion on XCode start. However, testing on CI is impossible because the version the tests rely on are reverted whenever xcodebuild is run. The commands I run to reproduce the issue ❯ git status Changes not staged for commit: (use "git add <file>..." to update what will be committed) (use "git restore <file>..." to discard changes in working directory) modified: Path/.xccurrentversion no changes added to commit (use "git add" and/or "git commit -a") ❯ git checkout "Path/.xccurrentversion" Updated 1 path from the index ❯ git status nothing to commit, working tree clean ❯ xcodebuild \ -scheme Scheme \ -configuration Configuration \ -sdk iphonesimulator \ -destination 'platform=iOS Simulator,name=iPhone 16 Pro,OS=latest' \ -skipPackagePluginValidation \ -skipMacroValidation \ test > /dev/null # test fails because model version is reverted ❯ git status HEAD detached at pull/249/merge Changes not staged for commit: (use "git add <file>..." to update what will be committed) (use "git restore <file>..." to discard changes in working directory) modified: Path/.xccurrentversion no changes added to commit (use "git add" and/or "git commit -a") I have experienced such issue in 16.3 (16E140) and 16.2 (16C5032a). Similar issues/solutions I have found online are the following. But they are either not relevant or do not work in my case. https://stackoverflow.com/questions/17631587/xcode-modifies-current-coredata-model-version-at-every-launch https://github.com/CocoaPods/Xcodeproj/issues/81 Is anyone aware of any solution? Is there a recommended way I can run diagnostics on XCode and file a feedback?
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Sep ’25
Error reporting test coverage in Xcode 14.3.1
Xcode is throwing an error when attempting to report test coverage after running unit tests. Showing All Messages Failed to merge raw profiles in directory /{my project dir}/DerivedData/{my project name}/Build/ProfileData/A98EC493-3AB4-4B1C-B7FC-BC5D77B23EE3 to destination /{my project dir}/DerivedData/{my project name}/Build/ProfileData/A98EC493-3AB4-4B1C-B7FC-BC5D77B23EE3/Coverage.profdata: Aggregation tool '/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/llvm-profdata' failed with exit code 1: warning: /{my project dir}/DerivedData/{my project name}/Build/ProfileData/A98EC493-3AB4-4B1C-B7FC-BC5D77B23EE3/997F01E3-3735-4897-AE00-31EBB0A9E8D3-57885.profraw: invalid instrumentation profile data (file header is corrupt) error: no profile can be merged Anyone else seeing this issue?
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Failed to launch app in reasonable time Xcode 16
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.
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Jun ’25
Xcode Cloud: The page you’re looking for can’t be found.
We started seeing an access issue today when attempting to go to the Xcode Cloud tab in App Store Connect. When you navigate to https://appstoreconnect.apple.com/teams/:teamId/apps/:appId/ci we're seeing the following message: The page you’re looking for can’t be found. The page you’re looking for does not exist, or you do not have permission to view it. I am the account holder so it shouldn't be a permissions issue. Is there an ongoing outage or problem in Xcode Cloud? And, if so, where can I monitor this accurately?
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Aug ’25
Xcode debugger doesn't pause on breakpoints (simulator SDK < iOS 17)
Hello. I'm seeing an inconsistent behavior where breakpoints I set in my (Swift) iOS app behave normally when I'm debugging on a device or on a simulator running iOS 17.x, but when I try using simulators of iOS 16 or 15 the breakpoints get ignored completely. I also observe that the breakpoints remain solid blue and do NOT adopt the dotted blue outline, as experienced by other users. I've seen a few posts on here and on SO about the general issue of ignored breakpoints (with no conclusive answer AFAIK), but I haven't seen any where the behavior varies with the SDK being used. The behavior is repeatable and predictable (within the same app at least). I am not adding the breakpoints after building/running, and I'm sure the logic reaches the lines with the breakpoints (and again, whenever I switch to an iOS 17 simulator, execution does pause as expected with the exact same breakpoints). Things I've tried and looked into: Clean up project build folder Delete and re-install simulators (iOS 16.4 and 15.5) Deleted the entire derived data directory, as well as the CoreSimulator one. Confirm the build configuration is Debug, and the "Debug executable" option is checked. inspect various build flags mentioned in other posts: {Swift compiler - Code generation - Optimization level - Debug: -0none; Debug information format: DWARF (I also tried DWARF with dSYM with no impact)}. Most of my settings are on the plain vanilla/out of the box side, with only a couple of SPM dependencies, and I've been maintaining the same app for about 5 years and don't think I've come across this behavior before. Currently using Xcode 15.1. Deployment target is 14.0. Thank you.
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Apr ’25
dyld: Symbol not found: swift34swift50override_conformsToProtocol
I am getting following error from one of the pod frameworks while running the app (Build is a success). dyld: Symbol not found: __ZN5swift34swift50override_conformsToProtocolEPKNS_14TargetMetadataINS_9InProcessEEEPKNS_24TargetProtocolDescriptorIS1_EEPFPKNS_18TargetWitnessTableIS1_EES4_S8_E. Referenced from: X framework Expected in: frameworks/DeviceKit.framework/DeviceKit mac OS 10.15 Xcode 12.4 React native 0.63 cocoapods: 1.10.1
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Feb ’25
Need to know how to stop indentation
Xcode 16 unindents lines if I choose a code-completion and I cannot find a way to stop this - does anybody know how to stop it? Here's a link to a gif demonstrating this problem - it's incredibly frustrating. https://i.imgur.com/jaDpzpb.gif Thanks in advance
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Apr ’25