Xcode 15.0 wouldn't connect iPhone with iOS 17.0

I have installed Xcode 15.0 and trying to connect a recently updated (iOS 17.0) iPhone 14 Pro Max. Unable to do so.

Displays - "The developer disk image could not be mounted on this device. A networking error occurred."

I have tried uninstalling and reinstalling Xcode, restarting the iPhone.

Domain: com.apple.dt.CoreDeviceError
Code: 12040
Failure Reason: A networking error occurred.
User Info: {
    DDIPath = "/Users/****/Library/Developer/DeveloperDiskImages/iOS_DDI.dmg";
    DVTErrorCreationDateKey = "2023-09-19 18:15:30 +0000";
    DeviceIdentifier = "583B3717-6C53-4230-9EAF-C8E8556227F3";
    IDERunOperationFailingWorker = IDEInstallCoreDeviceWorker;
    NSURL = "file:///Users/****/Library/Developer/DeveloperDiskImages/iOS_DDI.dmg";
    Options =     {
        MountedBundlePath = "file:///private/var/tmp/CoreDevice_DDI_Staging_1782879505/583B3717-6C53-4230-9EAF-C8E8556227F3/";
        UseCredentials = 0;
    };
    "com.apple.dt.DVTCoreDevice.operationName" = enablePersonalizedDDI;
}
--
A networking error occurred.
Domain: com.apple.dt.CoreDeviceError
Code: 4
--
Error mounting image: 0xe800010e (kAMDMobileImageMounterNetworkNotReachableError: A network error occurred (server not reachable).)
Domain: com.apple.mobiledevice
Code: -402652914
User Info: {
    FunctionName = AMDeviceRemoteMountPersonalizedBundle;
    LineNumber = 2108;
}
--
AMAuthInstallRequestSendSync failed: 11 (kAMAuthInstallErrorServerNotReachable)
Domain: com.apple.mobiledevice
Code: -402652914
User Info: {
    FunctionName = "-[PersonalizedImage mountImage:]";
    LineNumber = 2005;
}
--

Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : {
    "device_isCoreDevice" = 1;
    "device_model" = "iPhone15,3";
    "device_osBuild" = "17.0 (21A329)";
    "device_platform" = "com.apple.platform.iphoneos";
    "dvt_coredevice_version" = "348.1";
    "dvt_mobiledevice_version" = "1643.2.4";
    "launchSession_schemeCommand" = Run;
    "launchSession_state" = 1;
    "launchSession_targetArch" = arm64;
    "operation_duration_ms" = 19039;
    "operation_errorCode" = 4;
    "operation_errorDomain" = "com.apple.dt.CoreDeviceError.12040.com.apple.dt.CoreDeviceError";
    "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_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_memoryGraphOnResourceException" = 0;
    "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_stopOnIssue" = 0;
    "param_diag_showNonLocalizedStrings" = 0;
    "param_diag_viewDebugging_enabled" = 1;
    "param_diag_viewDebugging_insertDylibOnLaunch" = 1;
    "param_install_style" = 0;
    "param_launcher_UID" = 2;
    "param_launcher_allowDeviceSensorReplayData" = 0;
    "param_launcher_kind" = 0;
    "param_launcher_style" = 99;
    "param_launcher_substyle" = 8192;
    "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" = "iphoneos17.0";
    "sdk_osVersion" = "17.0";
    "sdk_variant" = iphoneos;
}
--


System Information

macOS Version 13.5.2 (Build 22G91)
Xcode 15.0 (22265) (Build 15A240d)
Timestamp: 2023-09-19T14:15:30-04:00

I have same issue along with one of my colleagues. please post here if you find solution, thanks

I'm facing same issue. Can you help me if you solved this issue?

@ManagerScott, @Monikanta It seems Xcode tries to verify dev account (not sure about the URL) before loading the DDI and my work MacBook was blocking this due to firewall rules. I tried it on a personal Mac and it worked.

I have a similar issue. Not using any firewall or VPN. Running on my personal Mac. Further details here: https://developer.apple.com/forums/thread/738712

I'm facing the same problem, not been able to solve this for about 1 month.

  • Not connected to any VPN.
  • Tried to erase all settings on my iPhone.
  • Tried to delete ~/Library/Developer folder, restarted Xcode, also restarted my Mac.
  • Upgraded from Xcode 15.0 to 15.3.

I still can't debug my app on iPhone 12 ios 17.3.1

I am also facing same issue "ERROR: The developer disk image could not be mounted on this device. (com.apple.dt.CoreDeviceError error 12040 (0x2F08))"

IOS version : 17.5.1 Xcode : 15.4

Tried by deleting all cache and developer disk images. Updating xcode. Nothing has worked out.

It is stopping my debugging in real phone