Unable to boot the iOS Simulator; launchd failed to respond

Question

I have the problem that when I launch the simulator, a black screen appears with the message: "Unable to boot the iOS Simulator". I'm using Xcode 6.4 with iOS 8.4 Simulator.

I have tried several solutions that are proposed on other threads, but nothing works. (launchd.conf not found on my system) Is there any solution without reinstalling Xcode/OS X?

Log-File:

Jul 8 15:10:07 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.PowerManagement.control: launch_sim_register_endpoint: 0xfffffecc Jul 8 15:10:17 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.SystemConfiguration.configd_host: launch_sim_register_endpoint: 0xfffffecc Jul 8 15:10:27 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.audio.coreaudiod: launch_sim_register_endpoint: 0xfffffecc Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.SystemConfiguration.PPPController: launch_sim_register_endpoint: 0xfffffecc Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.audio.audiohald: launch_sim_register_endpoint: 0x44e Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.coreservices.lsuseractivity.simulatorsupport: launch_sim_register_endpoint: 0x44e Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.FSEvents: launch_sim_register_endpoint: 0x44e Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service com.apple.SystemConfiguration.configd: launch_sim_register_endpoint: 0x44e Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service IndigoHIDRegistrationPort: launch_sim_register_endpoint: 0x44e Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service PurpleFBTVOutServer: launch_sim_register_endpoint: 0x44e Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Could not register service PurpleFBServer: launch_sim_register_endpoint: 0x44e Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Error Domain=NSPOSIXErrorDomain Code=60 "Unable to boot the iOS Simulator." UserInfo=0x7f8c70d18fd0 {NSLocalizedDescription=Unable to boot the iOS Simulator., NSLocalizedFailureReason=launchd failed to respond.} Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Error Domain=NSPOSIXErrorDomain Code=60 "Unable to boot the iOS Simulator." UserInfo=0x7f8c70d18fd0 {NSLocalizedDescription=Unable to boot the iOS Simulator., NSLocalizedFailureReason=launchd failed to respond.} Jul 8 15:10:37 WMUCM482679 com.apple.iphonesimulator[902] : Error Domain=NSPOSIXErrorDomain Code=60 "Unable to boot the iOS Simulator." UserInfo=0x7fcf53a01aa0 {NSLocalizedDescription=Unable to boot the iOS Simulator., NSLocalizedFailureReason=launchd failed to respond.} Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Error Domain=com.apple.CoreSimulator.SimError Code=146 "Unable to lookup in current state: Shutdown" UserInfo=0x7f8c70d18fd0 {NSLocalizedDescription=Unable to lookup in current state: Shutdown} Jul 8 15:10:37 WMUCM482679 CoreSimulatorService[793] : Error looking up host support port

Answer 1

For me, I had to delete and recreate my simulators to fix the problem. I followed this and did fastlane snapshot reset_simulators to do it using Fastlane.

Answer 2

For those who are still facing this issue, I found another answer which saved my day.

https://stackoverflow.com/a/32240747/8550847

Answer 3

First check your OS X version, because Xcode 6.4 works only in later versions of 10.10.

Second if you have copied Xcode from a DMG file then it should be copied in the Applications folder.