Xcode 6.4 showing duplicate 'Simulators' with Unique Id

Question

Till yesterday, everything was normal with Xcode. It was showing simulators as :

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But today, when I opened it, simulator list changed to :

enter image description here

Every simulator can be seen twice, name followed by a unique id. I have also observed that same named Simulator are also two different instances.

Can anyone help me, how to get rid of this ? Or how to reset it. It gives a weird look.

Any suggestion will be helpful.

Same here. I deleted the duplicates but that didn't work. Also, it keeps making duplicates; I have now 5 or 6 copies for each simulator — José Manuel Sánchez, Jul 08 '15 at 11:53
@josema.vitaminew I also have Xcode 7 Beta installed , do you have ? Can this be because of it. But Xcode 7 behaves normal. — itsji10dra, Jul 08 '15 at 12:31
Yes, I have it too. Could be some kind of conflict, not sure — José Manuel Sánchez, Jul 08 '15 at 13:36
I tried but it didn't work. After a while (maybe when closing and opening Xcode again it shows the duplicates again). — José Manuel Sánchez, Jul 10 '15 at 07:10
Fixed it by going into Menu->Window->Devices and removing the duplicates (if you see multiple simulators for iPhone 6 for example remove all but one). — Cherpak Evgeny, Jul 13 '15 at 07:34
I deleted my answer. Today I didn't have any duplicates, but after some hours they started appearing again — José Manuel Sánchez, Jul 13 '15 at 13:04
@josema.vitaminew I have deleted them today by going to Windows>Devices. Now I am waiting to see, whether they re-appear or not. — itsji10dra, Jul 13 '15 at 13:16
@josema.vitaminew I opened up Xcode today & they are back. Seems like there's no way to get rid of them permanently. — itsji10dra, Jul 14 '15 at 05:47
Kind of reminds me of the Contacts app, where one day you have each contact once, then after syncing your iPhone, restoring/etc. you have everyobody twice, then the next time you have everybody four times, etc... — Nicolas Miari, Jul 21 '15 at 04:34

NSDeveloper · Answer 1 · 2016-03-28T02:31:09.650

69

Solution from sunnyxx's weibo:

1.quit Xcode and iOS Simulator

2.killall -9 com.apple.CoreSimulator.CoreSimulatorService

3.rm -rf ~/Library/Developer/CoreSimulator/Devices

4.reopen Xcode

Edit: sudo seems unnecessary to kill SimulatorService.This solution will remove all exist simulator and recreate all available version and type simulators.

edited Mar 28 '16 at 02:31

answered Aug 17 '15 at 13:48

NSDeveloper

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Easiest solution of all! – Sep 22 '15 at 10:06
Works with XCode 8 GM :) Thank you – CPlusPlus Sep 13 '16 at 13:52
Worked perfectly with Xcode 8 GM. The only thing I would change above is this. Instead of deleted ~/Library/Developer/CoreSimulator/Devices, move that directory to a back up location. This will allow you to go back to it if something goes awry. – jkwuc89 Sep 20 '16 at 12:47
Worked great with Xcode 8, App Store version. Did not have to reinstall any simulators after following the steps: all "good" sims were still there, and all "unique ID" ones were gone! – John Jacecko Oct 04 '16 at 20:56
This worked for me in Xcode 8.0, but it seems to do nothing in 8.1. – Ethan Holshouser Oct 29 '16 at 16:15
Works in 9.2, don't forget to kill the service first. – Phil Mitchell Jan 22 '18 at 20:11
In addition to step 2 I needed to do `ps -ax`, search for any results containing "simulator" and kill those processes too – funkybro Sep 10 '21 at 09:07

score 67 · Accepted Answer · answered Aug 11 '15 at 18:49

67

I have an easier way to fix this.

Run the following:

xcrun simctl list devices | grep -v '^[-=]' | cut -d "(" -f2 | cut -d ")" -f1 | xargs -I {} xcrun simctl delete "{}"

answered Aug 11 '15 at 18:49

Doz

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this was the ideal solution for me. I had about 80-100 simulators and going to each one individually to delete it was a tedious manual process that took too long. – prawn Aug 19 '15 at 19:09
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This deleted ALL my iOS simulators. Now I have none at all. Do not run this command! – Orion Edwards Aug 24 '15 at 22:17
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@OrionEdwards Just open the Devices Window [cmd] + [Shift] + [2] and you can add the simulators you need. – Pierre Aug 25 '15 at 08:18
Thank you! Deleting 100 simulators by hand would have been hell – Andreas Sep 04 '15 at 13:35
@Pierre You saved me :) I got in the panic like Orion Edwards but now I reloaded simulators I need. – Wooseong Kim Oct 12 '15 at 05:09
This really deletes all Simulators so if you have small amount, just use @Cherpak Evgeny's solution – Lachezar Todorov Nov 12 '15 at 16:00
Hmm... I now have no simulators and installing them from the preferences window doesn't do anything :( – Fogmeister Jan 12 '16 at 11:24
Thanks it's working (run command and add simulators from [cmd] + [Shift] + [2] ) – Shrikant Tanwade May 11 '16 at 04:48
This works well but fails with devices like 'iPad Pro (12.9 inch)' see: http://stackoverflow.com/a/39188262/42323 – Brad The App Guy Aug 28 '16 at 05:22
just remove all existing simulators and the device_set.plist file, and Xcode will recreate them for you. as shown by @NSDeveloper – S. Liu Sep 28 '17 at 09:16

score 15 · Answer 3 · answered Aug 20 '15 at 08:05

15

You can use the following command :

snapshot reset_simulators

If you don't already have snapshot installed :

sudo gem install snapshot.

More info on snapshot here : https://github.com/krausefx/snapshot#installation

answered Aug 20 '15 at 08:05

Alexis C.

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[fastlane](https://github.com/fastlane/fastlane) is a great command line tool set. To reset to needed version, you need `snapshot reset_simulators --ios 8.3,9.1`, [just create latest version by default,see issue 2493](https://github.com/fastlane/fastlane/issues/2493). – NSDeveloper Mar 28 '16 at 02:58

ErickES7 · Answer 4 · 2015-07-10T01:02:13.437

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Looks like a ton of simulators were split into separate devices when updating. So what it sounds like you'd like to do is reduce your list of output decides.

To view the list of simulators, on the menu bar, goto: Window > Devices. Here you will see all the simulators shown in your output list. There is no reason to not delete and start over by adding the simulators you want

edited Jul 10 '15 at 01:02

answered Jul 09 '15 at 23:44

ErickES7

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Doesn't really help to solve the problem. The simulators get duplicated again the next time I launch Xcode. Daily routine to delete simulators until I just give up. – honcheng Jul 23 '15 at 14:32
You should try uninstalling Xcode, delete any files that was created by Xcode, like the Developer Folder inside your library as well as the iPhone Simulator folder then reinstall. That's odd that there's something continuously adding simulators D: – ErickES7 Jul 23 '15 at 14:43

score 8 · Answer 5 · answered Jul 08 '15 at 15:12

8

Go to the terminal to see the list of simulators using:

xcrun simctl list

Use the id's to delete the duplicates using:

xcrun simctl delete <ID>

E.g.

xcrun simctl delete 4B645F13-D130-412D-8EB4-B49BE7E2D7DA

answered Jul 08 '15 at 15:12

tobiasdm

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score 7 · Answer 6 · answered Jul 13 '15 at 07:35

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Fixed it by going into Menu->Window->Devices and removing the duplicates (if you see multiple simulators for iPhone 6 for example remove all but one).

answered Jul 13 '15 at 07:35

Cherpak Evgeny

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score 7 · Answer 7 · answered Aug 28 '16 at 05:20

Doz's oneliner is good, but the part that extracts the UUID of them simulator fails on some iPad devices like 'iPad Pro (12.9 inch)' because they have parentheses in the name. I rewrote to use grep instead of cut to account for this:

xcrun simctl list devices | grep -o '[A-F0-9]\{8\}-[A-F0-9]\{4\}-[A-F0-9]\{4\}-[A-F0-9]\{4\}-[A-F0-9]\{12\}' | xargs -I {} xcrun simctl delete "{}"

José Manuel Sánchez · Answer 8 · 2015-07-15T07:12:54.137

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I ended up creating a script to remove Xcode simulator duplicates:

https://gist.github.com/buscarini/6ec0ef1385f47fdbc505

edited Jul 15 '15 at 07:12

answered Jul 13 '15 at 07:08

José Manuel Sánchez

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I installed Xcode 7 - Beta 3 & now instead of 2 copy of each Simulator, I can see 4 copy with Unique Id. :( – itsji10dra Jul 13 '15 at 07:14
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Download the gist and extract. Then run remove_sim_dups.py every time you have duplicates – José Manuel Sánchez Jul 20 '15 at 13:54
What's the "8.4" hard-coded in your script? Does this work only for iOS 8.4? (I have duplicates of manu iOS versions) – Nicolas Miari Jul 21 '15 at 04:28
yes, it's only for iOS 8.4. I manually removed the duplicates for other iOS versions and they didn't come back, my problem is only with 8.4 – José Manuel Sánchez Jul 22 '15 at 07:45
this script didn't work for me, I'd prefer if it just deleted all of them, that should be a simpler script – malhal Aug 04 '15 at 23:16

score 0 · Answer 9 · answered Jul 11 '22 at 19:57

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If anyone is still coming here in 2022, the easiest solution to delete all simulators is to run this in your command line:

    xcrun simctl delete all

Then just add the simulators you actually want to use.

answered Jul 11 '22 at 19:57

ms217

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Xcode 6.4 showing duplicate 'Simulators' with Unique Id

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