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[Mac-15][iOS Simulator] Could not register as server for FlutterDartVMServicePublisher, permission denied. Check your 'Local Network' permissions for this app in the Privacy section of the system Settings. #166333
Description
Steps to reproduce
flutter create bugflutter runon an iOS 18.4 Simulator
Expected results
Does not print an error when the app starts.
Actual results
Prints error on app start
[ERROR:flutter/shell/platform/darwin/ios/framework/Source/FlutterDartVMServicePublisher.mm(129)] Could not register as server for FlutterDartVMServicePublisher, permission denied. Check your 'Local Network' permissions for this app in the Privacy section of the system Settings.
Code sample
Code sample
[Paste your code here]Screenshots or Video
Screenshots / Video demonstration
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Logs
Logs
alex@Alexs-MacBook-Pro test_bug % flutter run
Launching lib/main.dart on iPhone 16 Pro in debug mode...
Running Xcode build...
└─Compiling, linking and signing... 10.0s
Xcode build done. 28.9s
[ERROR:flutter/shell/platform/darwin/ios/framework/Source/FlutterDartVMServicePublisher.mm(129)] Could not register as server for FlutterDartVMServicePublisher, permission denied. Check your 'Local Network' permissions for this app in the Privacy section of the system Settings.
[ERROR:flutter/shell/platform/darwin/ios/framework/Source/FlutterDartVMServicePublisher.mm(129)] Could not register as server for FlutterDartVMServicePublisher, permission denied. Check your 'Local Network' permissions for this app in the Privacy section of the system Settings.
Syncing files to device iPhone 16 Pro... 361ms
Flutter run key commands.
r Hot reload. 🔥🔥🔥
R Hot restart.
h List all available interactive commands.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).
A Dart VM Service on iPhone 16 Pro is available at: http://127.0.0.1:54413/3lvtheyskW0=/
The Flutter DevTools debugger and profiler on iPhone 16 Pro is available at:
http://127.0.0.1:9101?uri=http://127.0.0.1:54413/3lvtheyskW0=/Flutter Doctor output
Doctor output
[✓] Flutter (Channel stable, 3.29.2, on macOS 15.4 24E248 darwin-arm64, locale en-GB) [2.3s]
• Flutter version 3.29.2 on channel stable at /Users/alex/workspace/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision c236373904 (3 weeks ago), 2025-03-13 16:17:06 -0400
• Engine revision 18b71d647a
• Dart version 3.7.2
• DevTools version 2.42.3
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0) [2.3s]
• Android SDK at /Users/alex/Library/Android/sdk
• Platform android-35, build-tools 34.0.0
• ANDROID_HOME = /Users/alex/Library/Android/sdk
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
This is the JDK bundled with the latest Android Studio installation on this machine.
To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
• Java version OpenJDK Runtime Environment (build 21.0.3+-79915917-b509.11)
• All Android licenses accepted.
[!] Xcode - develop for iOS and macOS (Xcode 16.3) [2.1s]
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 16E140
! CocoaPods 1.13.0 out of date (1.16.2 is recommended).
CocoaPods is a package manager for iOS or macOS platform code.
Without CocoaPods, plugins will not work on iOS or macOS.
For more info, see https://flutter.dev/to/platform-plugins
To update CocoaPods, see https://guides.cocoapods.org/using/getting-started.html#updating-cocoapods
[✗] Chrome - develop for the web (Cannot find Chrome executable at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome) [12ms]
! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[✓] Android Studio (version 2024.2) [12ms]
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 21.0.3+-79915917-b509.11)
[✓] VS Code (version 1.98.2) [10ms]
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.108.0
[✓] Connected device (3 available) [6.4s]
• iPhone 16 Pro (mobile) • 523BE6AB-F2BA-4984-ABE2-5C61B84D3556 • ios • com.apple.CoreSimulator.SimRuntime.iOS-18-4 (simulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 15.4 24E248 darwin-arm64
• Mac Designed for iPad (desktop) • mac-designed-for-ipad • darwin • macOS 15.4 24E248 darwin-arm64
! Error: Browsing on the local area network for Alex’s iPhone. Ensure the device is unlocked and attached with a cable or associated with the same
local area network as this Mac.
The device must be opted into Developer Mode to connect wirelessly. (code -27)
[✓] Network resources [1,901ms]
• All expected network resources are available.
! Doctor found issues in 2 categories.
Activity
maheshj01 commentedon Apr 2, 2025
Hey @RepliedSage11, Thanks for filing the issue, Do you have any code sample to reproduce the isssue? I tried running the newly created sample app and it seems to work fine.
flutter doctor -v
stable
alex-medinsh commentedon Apr 2, 2025
@maheshj01 I created a fresh iOS 18.4 Simulator and tried running the app. Maybe it needs to be a fresh simulator for it to reproduce?
checkmatesuga commentedon Apr 2, 2025
same here
alex-medinsh commentedon Apr 2, 2025
@zhujiageng @st1llsane @checkmatesuga
There is no need to leave "same" comments. Just add a 👍 to the OP. There is no need to spam others with notifications that provide no value.
maheshj01 commentedon Apr 2, 2025
Thanks for the details I was able to reproduce it on stable and the master channel
flutter doctor -v
master
stable
[-]iOS 18.4 Simulator prints error about FlutterDartVMServicePublisher[/-][+]IOS 18 Could not register as server for FlutterDartVMServicePublisher, permission denied. Check your 'Local Network' permissions for this app in the Privacy section of the system Settings.[/+]97 remaining items
ajxbit commentedon Jul 5, 2025
Just try Erasing the device as it fixed for me.
Turburlar commentedon Jul 10, 2025
Thumbs up for flutter developer experience!
erikkubica commentedon Jul 14, 2025
I have managed to solve this by simply updating xcode through appstore.
Rodrigolmti commentedon Jul 16, 2025
I tried all the suggestions and no luck with my project, sharing my context. Our project was a bit outdated in terms of dependencies and Flutter version, now Google play store has a policy that requires all apps to adhere to Android SDK 35, in order to get everything working on Android I had to use the latest Flutter version 3.32 .
Android build is working just fine, but my iOS build now does not work, if I try to build using vscode or xcode, and physical device or simulator. While exploring different solutions I was able to get a different error at some point, that hints to some miss configuration with Flutter SDK:
Library not loaded: @rpath/Flutter.framework/Flutter
Referenced from: <90FCEF77-12EA-3F25-ABF6-CF4318D0F460> /private/var/containers/Bundle/Application/8328AC31-7804-4254-AE48-4D81E6C34D63/Runner.app/Runner.debug.dylib
Reason: tried: /usr/lib/swift/Flutter.framework/Flutter (no such file, not in dyld cache),
This bug is a bit frustrating since i have to comply with Google play store policies by the end of the next month, and if I can't build the iOS project, I have a big problem.
Update:
I managed to find this issue which explains about the thin binary build step, for some reason my project did not had that phase anymore. Adding it back, solved the no such file error and i also don't get the error for the Could not register as server for FlutterDartVMServicePublisher.
I'm not sure what is the actual relationship between both issues, but just wanted to share what solved my issue.
This only solves the build straight from Xcode, I still get the following error while trying to build with vscode / cursor:
glauberlima commentedon Jul 16, 2025
evanwangace commentedon Jul 17, 2025
God, this matter has been causing me significant concern. I would appreciate a prompt resolution.😣
janlektonen commentedon Jul 17, 2025
Just updated to xCode 16.4 and created new simulator with iOS 18.5. I'm on latest macOS Sequoia 15.5.
I also tried this in info.plist:
NSLocalNetworkUsageDescription
Allow the debugger to connect over your local network.
NSBonjourServices
_dartVmService._tcp
_dartobservatory._tcp
I also looked for accepting internet access in macos and app under privacy & anonymi. Also The iOS simulator can browse internet fine in Safari but the app does not have access therefore the error we all talk about :-)
If it is a macOS problem I guess we will have to wait, but would be nice to have Flutter SDK working on iOS simulators again.
PierrevdMerwe commentedon Jul 18, 2025
@janlektonen I have the exact same configuration and tried the same workarounds. Commenting here to stay in the loop for when there is a fix. I even tried older simulators but it didn't work.
PierrevdMerwe commentedon Jul 18, 2025
Update:
Fixed in macOS public beta 15.6 can confirm👍🏼
Old:
I did some digging and it seems that this has been fixed in a new beta macOS version. See HERE on apple forum.
I did ask to specify if this is the Public or Developer Beta version, still waiting on a response.
Hope this fixes our issues 🙏🏼
toxaq commentedon Jul 22, 2025
So after I got this error and read this thread, in a second terminal I simply ran
dart devtools. This opened a window in Chrome, I copied in the debugger profile url from the first terminal into that and boom, I got my app in the simluator. HTH.behnamsattar commentedon Jul 29, 2025
So I just downloaded macOS 15.6 which was released a couple of hours ago and it fixed the issue. We should be able to close this one.
vashworth commentedon Jul 30, 2025
This issue is fixed with macOS 15.6. Closing.
github-actions commentedon Aug 13, 2025
This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of
flutter doctor -vand a minimal reproduction of the issue.