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I'm new to iOS development.

I downloaded Xcode 10.1 from AppStore but it had some errors at startup and couldn't show up. So I downgraded Xcode to version 10.0 (10A255) from Apple official downloads. IDE works fine but now I can't start simulator. I've tried every possible solution on the internet for hours. Here is the logs:

CoreSimulatorService[393] : com.apple.CoreSimulator.CoreSimulatorService 581.2 starting.

com.apple.ibtool[479] : Spawning processes in an unbooted state without setting kSimDeviceSpawnStandalone is deprecated.

com.apple.ibtool[478] : Spawning processes in an unbooted state without setting kSimDeviceSpawnStandalone is deprecated.

CoreSimulatorService[393] : Could not register service com.apple.PowerManagement.control: launch_sim_register_endpoint: 0xfffffecc

CoreSimulatorService[393] : Could not register service com.apple.SystemConfiguration.configd_host: launch_sim_register_endpoint: 0xfffffecc

CoreSimulatorService[393] : Could not register service com.apple.audio.coreaudiod: launch_sim_register_endpoint: 0xfffffecc

CoreSimulatorService[393] : Could not register service com.apple.SystemConfiguration.PPPController: launch_sim_register_endpoint: 0xfffffecc

CoreSimulatorService[393] : Could not register service com.apple.audio.audiohald: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Could not register service com.apple.coreservices.lsuseractivity.simulatorsupport: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Could not register service com.apple.SystemConfiguration.configd: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Could not register service com.apple.FSEvents: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Could not register service PurpleFBTVOutServer: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Could not register service IndigoHIDRegistrationPort: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Could not register service PurpleFBServer: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Could not register service com.apple.CoreSimulator.host.bootstrap_port: launch_sim_register_endpoint: 0x44e

CoreSimulatorService[393] : Error Domain=NSPOSIXErrorDomain Code=60 "Operation timed out" UserInfo={NSLocalizedDescription=Unable to boot the Simulator., NSLocalizedFailureReason=launchd failed to respond.}

CoreSimulatorService[393] : Error Domain=NSPOSIXErrorDomain Code=60 "Operation timed out" UserInfo={NSLocalizedDescription=Unable to boot the Simulator., NSLocalizedFailureReason=launchd failed to respond.} CoreSimulatorService[393] : Error Domain=NSPOSIXErrorDomain Code=60 "Operation timed out" UserInfo={NSLocalizedDescription=Unable to boot the Simulator., NSLocalizedFailureReason=launchd failed to respond.}

What can I do?

easeccy
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  • I have completely same as your issues in macOS 10.13.6 and Xcode 10.0, 10.1 suddenly. Was it solved? – Exile3daime Jan 25 '19 at 16:46
  • @Kueiapp I upgraded or downgraded Xcode an that solved it. I don't remeber the version, it was a while ago, sorry. – easeccy Apr 27 '19 at 20:52
  • follow this thread https://stackoverflow.com/questions/24023029/error-opening-ios-simulator-with-ios-8-beta-version-unable-to-boot-the-ios-sim – Mehrdad Dec 13 '19 at 21:24

6 Answers6

11

In my case

Unable to boot the Simulator.
Domain: NSPOSIXErrorDomain
Code: 60
Failure Reason: launchd failed to respond.

Was fixed by restarting my wifi router which was playing up.

lewis
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5

In my case clearing derived data helped. You can do it like this:

Open Xcode -> Preferences -> Locations -> Derived Data (Click the little arrow) -> Delete the folder.

Ninjaval
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1

In my case i have to drag the simulator to the trash bin the i relaunch again and it open

Arinzehills
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0

I solved it by installing the last update to the SO

CrsCaballero
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0

Hmm, sad to say but restarting my Mac actually fixed the issue.

Cyril Cermak
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0
  1. Right-click on the simulator icon
  2. Click on "Options".
  3. Click on "Show in Finder"

When the finder is open

  1. Right-click on the icon again
  2. Then click "Move to bin"

After deleting the simulator

  1. Go to your computer bin and restore it

It must work.

You're welcome

Sam
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