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Associating file extension with my application
My application uses a text file with an extension of .dssfilelist. On Linux I would register the Mime type and associate it with the application in the .desktop file. <?xml version="1.0" encoding="UTF-8"?> <mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info"> <mime-type type="text/dssfilelist"> <comment>DeepSkyStacker file-list file</comment> <glob pattern="*.dssfilelist" /> </mime-type> </mime-info> I believe that I need to add stuff to the Info.plist for my application, but I also understand that CFBundleTypeExtensions is deprecated. So please could you show me what I now need to add to the Info.plist file so that these files will be registered as "text/dssfilelist" type and associated with my application and to associate a .icns file with it?
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May ’25
[Help] Xcode device debugging of iOS 18.4 / 18.5 is very slow, and it is suspected to be stuck in the stage of loading dynamic libraries in debugserver
Environment Xcode version: Xcode 16.0 iOS device system version: iOS 18.4 / 18.5 Problem description When debugging iOS 18.4/18.5 on a real device, the App starts very slowly after clicking Run, usually taking 2-3 minutes, which is much slower than iOS 18.3. It manifests as Xcode staying in the Launch stage for a long time, and the application stuck in the opening screen interface. Start the APP first, then attach the process, and this problem will not exist Location process Use lldb to enable logs log enable gdb-remote packets After observing the logs, it was found that: The jam mainly occurs when processing two data packets: jGetLoadedDynamicLibrariesInfos and qProcessInfo These two commands involve dynamic library loading information and process meta information, and the response time is much higher than the normal level, far exceeding other gdb-remote instructions Use Instruments / Profiler to analyze: The CPU peak of the real machine debugserver is concentrated in the dynamic library information loading process of _dyld_process_info_create Is there a way to deploy a modified debugserver on the real machine to further locate the problem How to enable and view the debugsever log to further locate the problem
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191
May ’25
AR Camera Freezes in Split View on iPad (Vuforia + Unity + iOS 16+)
Hi everyone, We're developing an AR app using Unity with Vuforia for object detection. Our app works well in full-screen mode, including detection and post-detection phases. However, we're facing a specific issue in iPad Split View multitasking mode. Problem: The AR camera (Vuforia-based) freezes during object detection if another app is opened in Split View. Post-detection, everything works fine in Split View. The problem only occurs during detection. Testing Environment: iPadOS 16+ Unity with Vuforia plugin Using EnableMultitaskingCameraAccess() method with AVFoundation to support camera multitasking AR scene is set up properly with detection capabilities in full-screen
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May ’25
Notification Content Extension on Simulator
Hello All, I see an issue while running the Notification content Extension on simulator without checking the "Copy only when installing in app target -> Build Phases -> Embed App Extensions" If I check "Copy only when installing in app target" then only it is working. Can someone please confirm if Notification Content Extension is working on simulator. If yes how can we do that. Please share the details
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May ’25
Xcode JSONDecoder playground fails with 'The LLDB RPC server has crashed.
If I create a playground project that uses a JSONDecoder I get the following error. The LLDB RPC Server has crashed. The crash log is located at ~/Library/Logs/DiagnosticReports and has a prefix 'lldb-rpc-server'. Please file a bug and attach the most recent crash log. I have raised feedback for this, FB17702087, but I hope that there may be a workaround. The code I am using to try and get this to work is from The Apple Developer Documentation - JSON Decoder var greeting = "JSON Test 3" struct GroceryProduct: Codable { var name: String var points: Int var description: String? } let json = """ { "name": "Durian", "points": 600, "description": "A fruit with a distinctive scent." } """.data(using: .utf8)! let decoder = JSONDecoder() let product = try decoder.decode(GroceryProduct.self, from: json) print(product.name) // Prints "Durian" A screenshot of the playground showing the error The crash log (the file type has been changed to txt as ips file types cannot be selected for upload. lldb-rpc-server-2025-05-28-140832.txt
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May ’25
WatchOS app - installation not working
Hi everyone, I’ve been trying since yesterday to set up an Apple Watch app alongside my iOS app, but it’s not working at all. I created the app by adding a new target, selected watchOS > App, and linked it to my iOS project. When I run the Apple Watch scheme directly, the app works, but if I try to install it on my Apple Watch via the iOS app, it doesn’t work. Every time I tap install, I get a message saying that the installation failed. While reading the documentation, they mention an Info.plist file that is supposed to be generated with the watchOS app, but when I check, I don’t see any .plist file. Is that normal? Thanks for your help.
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May ’25
Blocker: Registering simulator runtime with CoreSimulator failed.
Hello, FWIW I've been developing enterprise iOS apps going on 10 years and haven't seen a bug like this. It's a major blocker. Any advice is welcome. Pulled latest from my team's repository . I ran into a build issue. Reinstalled cocoa pods, resolved swift packages, cleared cache, and then tried to update my iOS simulators... Since then, everything is bricked. Can't side load an app or download a simulator. When I try to download simulator, as suggested by Xcode, I receive the following error: Registering simulator runtime with CoreSimulator failed. Domain: DVTDownloadableErrorDomain Code: 29 User Info: { DVTErrorCreationDateKey = "2025-05-28 19:18:13 +0000"; } Registering simulator runtime with CoreSimulator failed. Domain: DVTDownloadableErrorDomain Code: 29 Mount failed: SUIS premount dissented Domain: com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code: 10 Failure Reason: the operation is not appropriate (kDAReturnNotPermitted) System Information macOS Version 15.5 (Build 24F74) Xcode 16.3 (23785) (Build 16E140) Timestamp: 2025-05-28T14:18:13-05:00 I've restarted my Mac. I've cleared caches. I cleared project builds and all old simulators. I've reverted to much older previous commits after trying above just in case (even though I've verified no one else on my team is experiencing this issue). Nothing works. I found a post online and tried this command: xcrun devicectl manage ddis update Resulting in this: Host CoreDevice version: 443.19 13:57:32 Updating host DDIs. 13:57:32 Failed to update the host's developer disk images. ERROR: Failed to update developer disk images on the host. (com.apple.dt.CoreDeviceError error 12010 (0x2EEA)) ERROR: Request to update the host's developer disk images failed. (com.apple.dt.CoreDeviceError error 12013 (0x2EED)) ERROR: Failed to update developer disk images on the host. (com.apple.dt.CoreDeviceError error 12010 (0x2EEA)) ERROR: Failed to copy a developer disk image to the underlying system. (com.apple.dt.CoreDeviceError error 12009 (0x2EE9)) NSURL = file:///Library/Developer/CoreDevice/CandidateDDIs/iOS_DDI.dmg DeveloperDiskImageInstallLocation = file:///Library/Developer/DeveloperDiskImages_2D128D6A-770D-4040-8819-C611DC607098.staged/ ERROR: The developer disk image could not be staged on the host. (com.apple.dt.CoreDeviceError error 12045 (0x2F0D)) NSURL = file:///Library/Developer/CoreDevice/CandidateDDIs/iOS_DDI.dmg ERROR: The operation couldn’t be completed. StorageKit claimed that it mounted the disk image at the required path, but the item there is not a disk image. (NSPOSIXErrorDomain error 2 (0x02)) ExpectedMountPoint = /private/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/28C3C798-5FB7-45E6-A95C-4CC84A3D7851 NSLocalizedFailureReason = StorageKit claimed that it mounted the disk image at the required path, but the item there is not a disk image. NSURL = file:///Library/Developer/CoreDevice/CandidateDDIs/iOS_DDI.dmg NSLocalizedRecoverySuggestion = This is likely due to a software bug. Please file a bug report including a sysdiagnose. Also, here is the latest from my CoreSimulator logs: May 28 13:50:24 Mac com.apple.ibtool[3680] : Unable to discover any Simulator runtimes. Developer Directory is /Applications/Xcode_16.3.app/Contents/Developer. May 28 13:52:10 Mac com.apple.CoreSimulator.simctl[4509] : Unable to discover any Simulator runtimes. Developer Directory is /Applications/Xcode.app/Contents/Developer. May 28 13:52:44 Mac com.apple.dt.Xcode[948] : Adding runtime disk image '/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/6fb1e5fe25ee1c372f7116516e615c556906bd4e.asset/AssetData/090-44150-318.dmg' error: Error Domain=com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code=10 "Mount failed: SUIS premount dissented" UserInfo={NSLocalizedDescription=Mount failed: SUIS premount dissented, NSLocalizedFailureReason=the operation is not appropriate (kDAReturnNotPermitted)} May 28 13:53:35 Mac com.apple.dt.Xcode[948] : Adding runtime disk image '/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/6fb1e5fe25ee1c372f7116516e615c556906bd4e.asset/AssetData/090-44150-318.dmg' error: Error Domain=com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code=10 "Mount failed: SUIS premount dissented" UserInfo={NSLocalizedDescription=Mount failed: SUIS premount dissented, NSLocalizedFailureReason=the operation is not appropriate (kDAReturnNotPermitted)} May 28 14:21:02 Mac com.apple.dt.Xcode[948] : Adding runtime disk image '/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/6fb1e5fe25ee1c372f7116516e615c556906bd4e.asset/AssetData/090-44150-318.dmg' error: Error Domain=com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code=10 "Mount failed: SUIS premount dissented" UserInfo={NSLocalizedDescription=Mount failed: SUIS premount dissented, NSLocalizedFailureReason=the operation is not appropriate (kDAReturnNotPermitted)} I appreciate any help. Thank you
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May ’25
LaunchServices has returned error -10810
M3 MBP running Sequoia 15.4.1 and Xcode 16.4 Mac is (old school) AD bound Mac is managed by Intune, and is set to allow apps to be run from anywhere. When we try to build and run anything in Xcode, we get the error in the title. Pertinent log entries: mcxalr{94} ** Denying execute for uid=1474851099 path=/Users//Library/Developer/Xcode/DerivedData/mactest2-gevqwurjuobygdaiwboubirauoxv/Build/Products/Debug/mactest2.app/Contents/MacOS/mactest2 If we run it from an AD account that is set up as a local admin, then we get the OS dialog saying: You don't have permissions to use the application "mactest2." For more information, contact the person who set up your account. If that user logs out, and we log in with a "true" local admin account (UID 501), then we get the same results, BUT the OS dialog gives us the option to grant access to the app. (for whatever reason, the auth dialog seems to be created by ScreenTime.) Signing is set up correctly, but we're not trying to distribute anything, just literally trying to run the generic "hello world" default macOS app project.
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May ’25
Why is Xcode so slow and bad?
I just want to rant why is Xcode such a bad ide and I wish Apple can do a better job on Xcode. Here's why: The preview is so slow. Most of the times it's just faster for me to test on a real device. It is so slow, and many times I need to force quite after it's being unresponsive for sometimes. When I'm working on larger projects, the loading time becomes extremely slow especially when there's other clients that might be reading the same files like a Git client or simply iCloud. The breakpoint is so slow. I don't know why, is it an iOS thing? But when I'm on ASP.Net the breakpoints are super fast. For Xcode it takes a long time to pause and show data. It's so big I don't know why it is so hard for Apple to make their ide better. The community has been unsatisfied with Xcode for a long time. There's many tricks on the internet that you can find to help you resolve some issues with your project that's actually related to Xcode. Instead of using these tricks, Apple should just fix these issues. Learn from Intellij!
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May ’25
Help! Free to paid dev account
I’m very new to mobile app development but not new to application development in general. I’m close to completing my first app and really excited to get things moving along and then hit a major roadblock and am at my wits end with this. I currently have a free account and have been testing on my own phone. I’m ready to move to TestFlight so went to enroll in the paid program and it just says can’t do so at this time. I sent support an email and they said it’s because they can’t identify me. I called and they told me the same thing and that there is literally nothing that can be done. I tried to create a new Apple ID and figured I’d just use it for the dev work I want to do but I can’t even create a new ID. I did have Family Sharing setup with myself as the organize and removed myself from that to ensure nothing was preventing identification. Still nothing. I can’t possibly be the only one that has gone through this. Frustrated is an understatement and getting this app out was really going to be such a big deal for me. So disappointed. Any suggestions?
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May ’25
Xcode build system has crashed after adding opencv to macApp
Hi, I am currently working on a MacOS App, where I need the undistortion function of opencv. But after I tried to add opencv to my project, I get following error: unexpected service error: The Xcode build system has crashed. Build again to continue. Cleaning the build folder also doesn't help. Does anyone have an idea what could be the issue? Ryan
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May ’25
Can’t Enable Developer Mode on Apple Watch – No Prompt Appears
Hi, I’m currently developing a watchOS app and ran into an issue where I can’t enable Developer Mode on my Apple Watch. Device info: Apple Watch Series 9 (watchOS 10.4) Paired with iPhone 14 Pro (iOS 17.4.1) Xcode 15.3 (macOS 15.5, Apple Silicon) Issue: When I try to run the app on my physical watch device, Xcode prompts that Developer Mode needs to be enabled. However, there is no approval request on the Apple Watch, and no Developer Mode option appears under Settings → Privacy &amp; Security. I’ve already tried the following: Rebooting both devices Unpairing and re-pairing the watch Erasing and setting up the watch again Signing out and back into my Apple ID Using the latest Xcode version (15.3 and 16.3 both tested) Running clean builds and checking provisioning profiles Attempting install via both simulator and physical device Still no luck — the app will not launch on the Apple Watch due to Developer Mode being disabled, and the option is missing entirely from Settings. I visited an Apple Store Genius Bar, but they couldn’t help and told me to contact Developer Support. I’ve already submitted a support request, but in the meantime I wanted to ask here in case anyone else has experienced this and found a workaround. Thanks in advance.
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May ’25
Objective-C headers build fine with swift but not with Xcode
On my M4 Mac running macOS 15.5 using Xcode 16.4 & Xcode CLT 16.4, Swift code in my Swift Package Manager 5.9 project (https://github.com/mas-cli/mas) builds fine against some included Objective-C headers via the following command line: swift build -c release But cannot find modules for the included Objective-C headers when building inside Xcode 16.4 or with the following command line on the same Mac: xcodebuild -scheme mas -configuration Release -destination platform=macOS,arch=arm64,variant=macos The error is: Sources/mas/AppStore/AppleAccount.swift:9:16: error: no such module 'StoreFoundation' How can I get Xcode / xcodebuild to work? Note that the project is normally built by running: Scripts/build which runs: swift build -c release after running the following script, which must be run before any build (swift, Xcode, or xcodebuild) because it generates a necessary file (Sources/mas/Package.swift): Scripts/generate_package_swift I've tried moving the Objective-C headers into include subfolders of their existing module folders, using double quotes instead of angle brackets for the #import statements, having module.modulemap files in the include subfolders or their parent module folder, and moving the module folders one level up the file hierarchy, to no avail. I've also tried various changes to the root-level Package.swift (not the generated one deeper in the hierarchy, which isn't inclined in the build configuration), like making separate library targets for each of the Objective-C modules, various swiftSettings & linkerSettings, etc. Maybe some of those changes would have helped, but maybe they were in incorrect combinations. Thanks for any help.
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May ’25
Error build expo EAS
I'm trying to create a new build from VSC through EAS (expo) but it's failing and returning the error I'm attaching. I'm running the command eas build --profile preview --platform ios. I have an "App Manager" account, my colleague has the same role and he can do builds normally. I have other permissions and accesses ok, as can be seen in the attached picture, but apparently I have the issue in "register bundle identifier". Does anyone faced the same issue? How can I solve this? What step I'm missing? Thanks in advance!
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May ’25
Xcode 16.3 repeatedly log causing CPU leak
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
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May ’25
Has anyone turned macOS into a globally accessible multiuser dev server?
Has anyone here successfully set up macOS as a globally accessible, multiuser development server using native remote login (SSH) and VS Code Remote?
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109
Activity
May ’25
Admin role can't edit some certificate created
I created an apple development certificate using an api key. When the certificate was created and I want to revoke the certificate but revoke button and download button is not there. I am an Admin in that account. Not sure how to fix this
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1
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111
Activity
May ’25
Setting LSApplicationCategoryType
Is this a valid thing to include in the Info.plist file? If so is a category of public.app-category.astronomyvalid? I couldn't find that, but the categories I did find seemed very limited.
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2
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174
Activity
May ’25
Associating file extension with my application
My application uses a text file with an extension of .dssfilelist. On Linux I would register the Mime type and associate it with the application in the .desktop file. <?xml version="1.0" encoding="UTF-8"?> <mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info"> <mime-type type="text/dssfilelist"> <comment>DeepSkyStacker file-list file</comment> <glob pattern="*.dssfilelist" /> </mime-type> </mime-info> I believe that I need to add stuff to the Info.plist for my application, but I also understand that CFBundleTypeExtensions is deprecated. So please could you show me what I now need to add to the Info.plist file so that these files will be registered as "text/dssfilelist" type and associated with my application and to associate a .icns file with it?
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19
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710
Activity
May ’25
[Help] Xcode device debugging of iOS 18.4 / 18.5 is very slow, and it is suspected to be stuck in the stage of loading dynamic libraries in debugserver
Environment Xcode version: Xcode 16.0 iOS device system version: iOS 18.4 / 18.5 Problem description When debugging iOS 18.4/18.5 on a real device, the App starts very slowly after clicking Run, usually taking 2-3 minutes, which is much slower than iOS 18.3. It manifests as Xcode staying in the Launch stage for a long time, and the application stuck in the opening screen interface. Start the APP first, then attach the process, and this problem will not exist Location process Use lldb to enable logs log enable gdb-remote packets After observing the logs, it was found that: The jam mainly occurs when processing two data packets: jGetLoadedDynamicLibrariesInfos and qProcessInfo These two commands involve dynamic library loading information and process meta information, and the response time is much higher than the normal level, far exceeding other gdb-remote instructions Use Instruments / Profiler to analyze: The CPU peak of the real machine debugserver is concentrated in the dynamic library information loading process of _dyld_process_info_create Is there a way to deploy a modified debugserver on the real machine to further locate the problem How to enable and view the debugsever log to further locate the problem
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0
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191
Activity
May ’25
AR Camera Freezes in Split View on iPad (Vuforia + Unity + iOS 16+)
Hi everyone, We're developing an AR app using Unity with Vuforia for object detection. Our app works well in full-screen mode, including detection and post-detection phases. However, we're facing a specific issue in iPad Split View multitasking mode. Problem: The AR camera (Vuforia-based) freezes during object detection if another app is opened in Split View. Post-detection, everything works fine in Split View. The problem only occurs during detection. Testing Environment: iPadOS 16+ Unity with Vuforia plugin Using EnableMultitaskingCameraAccess() method with AVFoundation to support camera multitasking AR scene is set up properly with detection capabilities in full-screen
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159
Activity
May ’25
Notification Content Extension on Simulator
Hello All, I see an issue while running the Notification content Extension on simulator without checking the "Copy only when installing in app target -> Build Phases -> Embed App Extensions" If I check "Copy only when installing in app target" then only it is working. Can someone please confirm if Notification Content Extension is working on simulator. If yes how can we do that. Please share the details
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106
Activity
May ’25
Xcode JSONDecoder playground fails with 'The LLDB RPC server has crashed.
If I create a playground project that uses a JSONDecoder I get the following error. The LLDB RPC Server has crashed. The crash log is located at ~/Library/Logs/DiagnosticReports and has a prefix 'lldb-rpc-server'. Please file a bug and attach the most recent crash log. I have raised feedback for this, FB17702087, but I hope that there may be a workaround. The code I am using to try and get this to work is from The Apple Developer Documentation - JSON Decoder var greeting = "JSON Test 3" struct GroceryProduct: Codable { var name: String var points: Int var description: String? } let json = """ { "name": "Durian", "points": 600, "description": "A fruit with a distinctive scent." } """.data(using: .utf8)! let decoder = JSONDecoder() let product = try decoder.decode(GroceryProduct.self, from: json) print(product.name) // Prints "Durian" A screenshot of the playground showing the error The crash log (the file type has been changed to txt as ips file types cannot be selected for upload. lldb-rpc-server-2025-05-28-140832.txt
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182
Activity
May ’25
Couldn't open apple account from Bangladesh
I'm trying to open an Apple account to enroll in the developer programme from Bangladesh but couldn't get verification code on Bangladeshi phone number. I've tried multiple phone numbers but got the same response (Verification codes can't be sent to this phone number at this time. Please try again later).
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0
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105
Activity
May ’25
WatchOS app - installation not working
Hi everyone, I’ve been trying since yesterday to set up an Apple Watch app alongside my iOS app, but it’s not working at all. I created the app by adding a new target, selected watchOS > App, and linked it to my iOS project. When I run the Apple Watch scheme directly, the app works, but if I try to install it on my Apple Watch via the iOS app, it doesn’t work. Every time I tap install, I get a message saying that the installation failed. While reading the documentation, they mention an Info.plist file that is supposed to be generated with the watchOS app, but when I check, I don’t see any .plist file. Is that normal? Thanks for your help.
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74
Activity
May ’25
Blocker: Registering simulator runtime with CoreSimulator failed.
Hello, FWIW I've been developing enterprise iOS apps going on 10 years and haven't seen a bug like this. It's a major blocker. Any advice is welcome. Pulled latest from my team's repository . I ran into a build issue. Reinstalled cocoa pods, resolved swift packages, cleared cache, and then tried to update my iOS simulators... Since then, everything is bricked. Can't side load an app or download a simulator. When I try to download simulator, as suggested by Xcode, I receive the following error: Registering simulator runtime with CoreSimulator failed. Domain: DVTDownloadableErrorDomain Code: 29 User Info: { DVTErrorCreationDateKey = "2025-05-28 19:18:13 +0000"; } Registering simulator runtime with CoreSimulator failed. Domain: DVTDownloadableErrorDomain Code: 29 Mount failed: SUIS premount dissented Domain: com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code: 10 Failure Reason: the operation is not appropriate (kDAReturnNotPermitted) System Information macOS Version 15.5 (Build 24F74) Xcode 16.3 (23785) (Build 16E140) Timestamp: 2025-05-28T14:18:13-05:00 I've restarted my Mac. I've cleared caches. I cleared project builds and all old simulators. I've reverted to much older previous commits after trying above just in case (even though I've verified no one else on my team is experiencing this issue). Nothing works. I found a post online and tried this command: xcrun devicectl manage ddis update Resulting in this: Host CoreDevice version: 443.19 13:57:32 Updating host DDIs. 13:57:32 Failed to update the host's developer disk images. ERROR: Failed to update developer disk images on the host. (com.apple.dt.CoreDeviceError error 12010 (0x2EEA)) ERROR: Request to update the host's developer disk images failed. (com.apple.dt.CoreDeviceError error 12013 (0x2EED)) ERROR: Failed to update developer disk images on the host. (com.apple.dt.CoreDeviceError error 12010 (0x2EEA)) ERROR: Failed to copy a developer disk image to the underlying system. (com.apple.dt.CoreDeviceError error 12009 (0x2EE9)) NSURL = file:///Library/Developer/CoreDevice/CandidateDDIs/iOS_DDI.dmg DeveloperDiskImageInstallLocation = file:///Library/Developer/DeveloperDiskImages_2D128D6A-770D-4040-8819-C611DC607098.staged/ ERROR: The developer disk image could not be staged on the host. (com.apple.dt.CoreDeviceError error 12045 (0x2F0D)) NSURL = file:///Library/Developer/CoreDevice/CandidateDDIs/iOS_DDI.dmg ERROR: The operation couldn’t be completed. StorageKit claimed that it mounted the disk image at the required path, but the item there is not a disk image. (NSPOSIXErrorDomain error 2 (0x02)) ExpectedMountPoint = /private/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/28C3C798-5FB7-45E6-A95C-4CC84A3D7851 NSLocalizedFailureReason = StorageKit claimed that it mounted the disk image at the required path, but the item there is not a disk image. NSURL = file:///Library/Developer/CoreDevice/CandidateDDIs/iOS_DDI.dmg NSLocalizedRecoverySuggestion = This is likely due to a software bug. Please file a bug report including a sysdiagnose. Also, here is the latest from my CoreSimulator logs: May 28 13:50:24 Mac com.apple.ibtool[3680] : Unable to discover any Simulator runtimes. Developer Directory is /Applications/Xcode_16.3.app/Contents/Developer. May 28 13:52:10 Mac com.apple.CoreSimulator.simctl[4509] : Unable to discover any Simulator runtimes. Developer Directory is /Applications/Xcode.app/Contents/Developer. May 28 13:52:44 Mac com.apple.dt.Xcode[948] : Adding runtime disk image '/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/6fb1e5fe25ee1c372f7116516e615c556906bd4e.asset/AssetData/090-44150-318.dmg' error: Error Domain=com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code=10 "Mount failed: SUIS premount dissented" UserInfo={NSLocalizedDescription=Mount failed: SUIS premount dissented, NSLocalizedFailureReason=the operation is not appropriate (kDAReturnNotPermitted)} May 28 13:53:35 Mac com.apple.dt.Xcode[948] : Adding runtime disk image '/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/6fb1e5fe25ee1c372f7116516e615c556906bd4e.asset/AssetData/090-44150-318.dmg' error: Error Domain=com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code=10 "Mount failed: SUIS premount dissented" UserInfo={NSLocalizedDescription=Mount failed: SUIS premount dissented, NSLocalizedFailureReason=the operation is not appropriate (kDAReturnNotPermitted)} May 28 14:21:02 Mac com.apple.dt.Xcode[948] : Adding runtime disk image '/System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/6fb1e5fe25ee1c372f7116516e615c556906bd4e.asset/AssetData/090-44150-318.dmg' error: Error Domain=com.apple.CoreSimulator.simdiskimaged.SimDiskImageError Code=10 "Mount failed: SUIS premount dissented" UserInfo={NSLocalizedDescription=Mount failed: SUIS premount dissented, NSLocalizedFailureReason=the operation is not appropriate (kDAReturnNotPermitted)} I appreciate any help. Thank you
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210
Activity
May ’25
LaunchServices has returned error -10810
M3 MBP running Sequoia 15.4.1 and Xcode 16.4 Mac is (old school) AD bound Mac is managed by Intune, and is set to allow apps to be run from anywhere. When we try to build and run anything in Xcode, we get the error in the title. Pertinent log entries: mcxalr{94} ** Denying execute for uid=1474851099 path=/Users//Library/Developer/Xcode/DerivedData/mactest2-gevqwurjuobygdaiwboubirauoxv/Build/Products/Debug/mactest2.app/Contents/MacOS/mactest2 If we run it from an AD account that is set up as a local admin, then we get the OS dialog saying: You don't have permissions to use the application "mactest2." For more information, contact the person who set up your account. If that user logs out, and we log in with a "true" local admin account (UID 501), then we get the same results, BUT the OS dialog gives us the option to grant access to the app. (for whatever reason, the auth dialog seems to be created by ScreenTime.) Signing is set up correctly, but we're not trying to distribute anything, just literally trying to run the generic "hello world" default macOS app project.
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1
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79
Activity
May ’25
Blocker: Registering simulator runtime with CoreSimulator failed.
Blocker: Registering simulator runtime with CoreSimulator failed.
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0
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87
Activity
May ’25
Why is Xcode so slow and bad?
I just want to rant why is Xcode such a bad ide and I wish Apple can do a better job on Xcode. Here's why: The preview is so slow. Most of the times it's just faster for me to test on a real device. It is so slow, and many times I need to force quite after it's being unresponsive for sometimes. When I'm working on larger projects, the loading time becomes extremely slow especially when there's other clients that might be reading the same files like a Git client or simply iCloud. The breakpoint is so slow. I don't know why, is it an iOS thing? But when I'm on ASP.Net the breakpoints are super fast. For Xcode it takes a long time to pause and show data. It's so big I don't know why it is so hard for Apple to make their ide better. The community has been unsatisfied with Xcode for a long time. There's many tricks on the internet that you can find to help you resolve some issues with your project that's actually related to Xcode. Instead of using these tricks, Apple should just fix these issues. Learn from Intellij!
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1
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4
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366
Activity
May ’25
Help! Free to paid dev account
I’m very new to mobile app development but not new to application development in general. I’m close to completing my first app and really excited to get things moving along and then hit a major roadblock and am at my wits end with this. I currently have a free account and have been testing on my own phone. I’m ready to move to TestFlight so went to enroll in the paid program and it just says can’t do so at this time. I sent support an email and they said it’s because they can’t identify me. I called and they told me the same thing and that there is literally nothing that can be done. I tried to create a new Apple ID and figured I’d just use it for the dev work I want to do but I can’t even create a new ID. I did have Family Sharing setup with myself as the organize and removed myself from that to ensure nothing was preventing identification. Still nothing. I can’t possibly be the only one that has gone through this. Frustrated is an understatement and getting this app out was really going to be such a big deal for me. So disappointed. Any suggestions?
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0
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87
Activity
May ’25
Xcode build system has crashed after adding opencv to macApp
Hi, I am currently working on a MacOS App, where I need the undistortion function of opencv. But after I tried to add opencv to my project, I get following error: unexpected service error: The Xcode build system has crashed. Build again to continue. Cleaning the build folder also doesn't help. Does anyone have an idea what could be the issue? Ryan
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165
Activity
May ’25
Can’t Enable Developer Mode on Apple Watch – No Prompt Appears
Hi, I’m currently developing a watchOS app and ran into an issue where I can’t enable Developer Mode on my Apple Watch. Device info: Apple Watch Series 9 (watchOS 10.4) Paired with iPhone 14 Pro (iOS 17.4.1) Xcode 15.3 (macOS 15.5, Apple Silicon) Issue: When I try to run the app on my physical watch device, Xcode prompts that Developer Mode needs to be enabled. However, there is no approval request on the Apple Watch, and no Developer Mode option appears under Settings → Privacy &amp; Security. I’ve already tried the following: Rebooting both devices Unpairing and re-pairing the watch Erasing and setting up the watch again Signing out and back into my Apple ID Using the latest Xcode version (15.3 and 16.3 both tested) Running clean builds and checking provisioning profiles Attempting install via both simulator and physical device Still no luck — the app will not launch on the Apple Watch due to Developer Mode being disabled, and the option is missing entirely from Settings. I visited an Apple Store Genius Bar, but they couldn’t help and told me to contact Developer Support. I’ve already submitted a support request, but in the meantime I wanted to ask here in case anyone else has experienced this and found a workaround. Thanks in advance.
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198
Activity
May ’25
Objective-C headers build fine with swift but not with Xcode
On my M4 Mac running macOS 15.5 using Xcode 16.4 & Xcode CLT 16.4, Swift code in my Swift Package Manager 5.9 project (https://github.com/mas-cli/mas) builds fine against some included Objective-C headers via the following command line: swift build -c release But cannot find modules for the included Objective-C headers when building inside Xcode 16.4 or with the following command line on the same Mac: xcodebuild -scheme mas -configuration Release -destination platform=macOS,arch=arm64,variant=macos The error is: Sources/mas/AppStore/AppleAccount.swift:9:16: error: no such module 'StoreFoundation' How can I get Xcode / xcodebuild to work? Note that the project is normally built by running: Scripts/build which runs: swift build -c release after running the following script, which must be run before any build (swift, Xcode, or xcodebuild) because it generates a necessary file (Sources/mas/Package.swift): Scripts/generate_package_swift I've tried moving the Objective-C headers into include subfolders of their existing module folders, using double quotes instead of angle brackets for the #import statements, having module.modulemap files in the include subfolders or their parent module folder, and moving the module folders one level up the file hierarchy, to no avail. I've also tried various changes to the root-level Package.swift (not the generated one deeper in the hierarchy, which isn't inclined in the build configuration), like making separate library targets for each of the Objective-C modules, various swiftSettings & linkerSettings, etc. Maybe some of those changes would have helped, but maybe they were in incorrect combinations. Thanks for any help.
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170
Activity
May ’25
Error build expo EAS
I'm trying to create a new build from VSC through EAS (expo) but it's failing and returning the error I'm attaching. I'm running the command eas build --profile preview --platform ios. I have an "App Manager" account, my colleague has the same role and he can do builds normally. I have other permissions and accesses ok, as can be seen in the attached picture, but apparently I have the issue in "register bundle identifier". Does anyone faced the same issue? How can I solve this? What step I'm missing? Thanks in advance!
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1
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429
Activity
May ’25
Xcode 16.3 repeatedly log causing CPU leak
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
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7
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423
Activity
May ’25