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Hemant Chittora
Hemant Chittora

Reputation: 3162

Unable to run app in Simulator: Xcode beta 6 iOS 8

I am unable to launch my app on simulator using Xcode 6 beta and iPhone 5s simulator. First I am getting an error message from Simulator

"Unable to boot the iOS simulator"

and then after Xcode is showing me following error,

Unable to run app in Simulator
An error was encountered while running (Domain = DTiPhoneSimulatorErrorDomain, Code = 2)

Xcode Error

Upvotes: 97

Views: 93061

Answers (24)

Nagev
Nagev

Reputation: 13285

This is an ancient question, but I still got this error, although slightly different: "Xcode unable to boot the simulator: Interrupted system call". This was with Xcode 15.0, trying to run iPhone 7 Plus with iOS 15.0.

The only thing that worked was installing iOS 15.5 on the Simulator. Then I could run the app with iOS 15.5 on iPhone 7 Plus.

Upvotes: 0

Bigfoot11
Bigfoot11

Reputation: 921

These steps may help you with your problem. Try this:

  1. Click iOS Simulator at the top of your screen

  2. Click Reset Contents and Settings

  3. Click Reset when the Alert comes up

  4. Run the App again on the Simulator

This will simply reset all the contents and settings on the iOS Simulator previously.

Upvotes: 0

Viraj Doshi
Viraj Doshi

Reputation: 891

What worked for me is just open the simulator and leave it open for a while it will probably boot up. I think in my case it was just trying to load the things or something like that or just my mac is slow.

Try leaving the simulator open for some time if it still does not boot then you may try any of the solutions here.

Upvotes: 0

Vittal Pai
Vittal Pai

Reputation: 3563

None of the above suggestions worked for me.

Changed the Embed setting for the complained framework to Do Not Embed resolved the issue.

Build Setting

Upvotes: 0

lewis
lewis

Reputation: 3192

In Xcode 11, I found running the following in Terminal worked:

sudo xcode-select --reset

Src: https://ekartco.com/2019/10/xcode-11-unable-to-boot-simulator-diehard/

Upvotes: 1

Noor
Noor

Reputation: 987

Perfect answer for this fix is here

In this case, launchd is crashing when trying to launch.

This could be as a result of deleting the /private/tmp folder.

To resolve this, I typed the following commands on my terminal:

sudo mkdir /private/tmp 
sudo chmod 1777 /private/tmp

Upvotes: 0

ayalcinkaya
ayalcinkaya

Reputation: 3343

  • Make sure you choose Xcode 6 as Command Line Tools in Preferences > Locations Section

Xcode 6 Preferences

  • Make sure you open Xcode 6 from Applications not from the setup file.

  • Finally restarting Mac solve the problem in my case.

Upvotes: 68

IQn
IQn

Reputation: 163

I found that I have to update to newest OS X 10.10.1 (From OS X 10.9.5) to get iOS 8.1 to work.

Upvotes: 0

iGW
iGW

Reputation: 643

I also had this problem and found the solution by doing following steps:

  1. Initially I downloaded Xcode 6 library in Documentation section under the path Xcode --> Preferences --> Downloads and restart my xcode but didn't solve my problem.

After that ->

  1. Downloaded and installed the iOS 7.1 Simulator under the path Xcode --> Preferences --> Downloads.

Restart xcode again and the problem solved.

  1. I am facing same issue again next morning.

Unsetting the DYLD_INSERT_LIBRARIES variable solves my problem:

a) Open terminal and type "sudo vi /etc/launchd.conf" command and press Enter
b) Press I "Insert" mode and change this 

    "setenv DYLD_INSERT_LIBRARIES /usr/lib/libimckit.dylib"

to this 

    "unsetenv DYLD_INSERT_LIBRARIES /usr/lib/libimckit.dylib"

and press esc to exit from insert mode.

c) Save changes by typing ":wq" Press Enter
d) Reboot your system and problem solved.

enter image description here

Prior to that I didn't found any iOS version in front of each listed devices but after installation or by unsetting DYLD_INSERT_LIBRARIES variable I found the same in front of each devices.

enter image description here

Upvotes: 3

Fred Yang
Fred Yang

Reputation: 179

I'm using Xcode 6 beta 2 and has problem (error code = 4 in my case) running iPad simulators. I think I had the issue because I'm running dual Mac OS boot and the Xcode is launched from another startup disk

I did both steps recommended by @ayalcinkaya and @apascual, and this worked for me.

  • Change the "Command Line Tool" to Xcode BETA2 (from 5.1.1 in my case) in "Xcode->Preference->Locations"
  • Open Xcode 6 beta 2
  • Go to the menu Xcode > Open Developer Tool > iOS Simulator
  • Even if an error dialog shows up, you still would have access to the iOS Simulator's menu Select Hardware > Devices, and switch between iPad devices and this apparently made the simulators reconfigured
  • While the simulator is running, run the app with the selected simulator.
  • After going through this manual process once, everything is fine.

Upvotes: 5

Renetik
Renetik

Reputation: 6373

Delete simulator/s and create again in Xcode/Window/Devices worked for me...

Upvotes: 0

zvjerka24
zvjerka24

Reputation: 1792

I had the same problem and only solution that helped me to fix this was to reinstall Xcode.

Upvotes: 0

HBublitz
HBublitz

Reputation: 680

I've had the same problem, when running an app with the same name as a previously run different app.

Run "foo" -> make a new project named "foo" -> run -> error.

Whatsoever - it seems to me that there are several reasons for iOS-Simulator to say "ehm, what do you want from me? OK, I'll throw an error..." ;-)

MY SOLUTION: Close iOS simulator, run app again.

That's it in most of cases like this.

Upvotes: 1

Manab Kumar Mal
Manab Kumar Mal

Reputation: 21398

Yes apascual is correct https://stackoverflow.com/a/24080160/2905967

But for me, before step 5, I have deleted the simulator device (select and by pressing Delete key from keyboard) Which device is giving the Problem. Reference: apascual answer

Upvotes: 0

Kof
Kof

Reputation: 25313

Clean -> Run fixed it for me.

I've tried the rest, nothing helped. Although it may be required too.

Upvotes: 1

apascual
apascual

Reputation: 2980

I solved it following these steps:

  1. Open Xcode 6 beta
  2. Go to the menu Xcode > Open Developer Tool > iOS Simulator
  3. Even if an error dialog shows up, you still would have access to the iOS Simulator's menu
  4. Select Hardware > Device > Manage Devices
  5. Click on the little + sign at the bottom
  6. Add (if missing) all the devices that you want, or delete and recreate the ones malfunctioning.
  7. If anyone of the simulator is not working then right click on it and delete it and then re-create it again

enter image description here

Upvotes: 133

Jeremy Huddleston Sequoia
Jeremy Huddleston Sequoia

Reputation: 23651

The most common cause for the error reporting is that DYLD_INSERT_LIBRARIES is set. Most people reporting this issue have had it set in /etc/launchd.conf. You can edit that file to remove it (or just delete the file as that's likely the only line) and reboot to address the issue.

Another possible cause for this problem is that you may have renamed Xcode.app after running it the first time. If that's the case, just reboot (or rename it back to what it was before).

Upvotes: 0

FishStix
FishStix

Reputation: 5124

I received this error trying to run one of my iPad only apps on the iPhone Simulator. It's built as a universal app, I've run it multiple times on the iPhone for testing, and I only recently checked the "iPad" only checkbox in the Target config.

When trying to run it on my iPhone Device, I got the much more helpful error message: "The application at [/location/..../Name.app] can only be installed on iPads."

Upvotes: -1

guri23
guri23

Reputation: 65

i was facing the same problem, what i done is I downloaded simulator for IOS7 what you need to do is go to:- 1.Xcode->preferences->Downloads->Components 2.after that in your project under general settings-select Deployment target as 7.0 3.the last thing is select any simulator under 7.0 :)

Upvotes: -1

lubert
lubert

Reputation: 119

What worked for me was removing all of the devices in "Manage Devices" and adding them back after rebooting

Upvotes: 2

Golden Thumb
Golden Thumb

Reputation: 2537

I got this problem after renaming the default folder name "Xcode-Beta2" to "Xcode". When I renamed it back to "Xcode-Beta2", the simulator worked as before.

Upvotes: 2

Alexandre
Alexandre

Reputation: 574

After I found some solutions on the web, a combination of procedures worked for me:

  1. Close Xcode and iOS Simulator (and all related applications)

  2. Install (or reinstall) Xcode6-Beta to Applications folder (direct from the .dmg file)

  3. Open Xcode6-Beta and go to Xcode -> Preferences -> Locations -> Command Line Tools and select "Xcode 6.0" (be sure that you've selected the one in Applications folder)

  4. Launch the iOS Simulator and go to iOS Simulator -> Reset Content and Settings...

  5. Close all the applications and restart your mac (I unchecked "Reopen windows...")

  6. Open Xcode6-beta and test the iOS Simulator

Good luck

Upvotes: 6

CSPearson
CSPearson

Reputation: 1

I had this problem until I put the Xcode 6-beta application file from inside a folder I had in my application directory to the Application directory itself. Restarted computer. Then it worked.

To test, I created a folder in my Application directory again and put my Xcode application in there and, again, it did not work. Put it back into Application directory itself; it worked. I didn't even have to restart in these cases.

I would really hope Apple is beyond hardcoding paths.

Upvotes: -1

footyapps27
footyapps27

Reputation: 4042

This happens most of the times because another instance of the simulator is running in the dock.

Kill the other instance & things should work fine.

Upvotes: 5

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