The iOS 8.1 simulator runtime is not available error in Xcode 6.1

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I was using Xcode 6.0.1 till now and things were fine. Then I upgraded to Xcode 6.1 and tried running my application(which has a deployment target of 7.0) in iPhone 6 simulator. But it shows an error message :

The iOS 8.1 simulator runtime is not available. Download the iOS 8.1 simulator runtime from the Downloads section in Xcode's Preferences

I manually deleted the earlier Xcode (6.0.1) and installed 6.1 from a dmg. I tried searching across but couldn't find related stuff. Any help would be appreciated.

Screenshot for warning

Schoolmaster answered 10/11, 2014 at 14:34 Comment(3)

Under Xcode > Preferences > Downloads > Components, they list which simulators you have downloaded. – Shellyshelman 10/11, 2014 at 14:37

I had similar issue and found that if you run app on iPhone 5 and below simulator then it works fine. Use of iPhone 6/6+ generates the warning. – Entomostracan 12/11, 2014 at 5:15

Similar issue, gone after updating latest security update 2014-005 (or reboot due to this install) – Goniometer 14/11, 2014 at 10:59

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It is a Mac problem, not an Xcode problem.

Logout the user, shutdown, restart or just reboot Mac. Your Xcode simulator will go back to normal.

Crosslet answered 26/11, 2014 at 6:19 Comment(4)

I renamed Xcode.app and ran into this. The reboot helped. I (now) believe I read something about this in recent release notes. – Graniela 15/6, 2015 at 11:52

Old Q&A, but I had this issue migrating from Xcode 10.1 to 10.2, and this result popped up first in google when checking for the error message. This worked for me. – Dolf 16/4, 2019 at 10:9

Works like a charm. I didnt even have the version in preferences for which the error was coming. Restarting helped – Griffey 22/5, 2019 at 11:54

Rebooting also solved for me after Xcode 10.2 to 10.2.1 upgrade. – Amputee 17/6, 2019 at 14:14

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For anyone still facing this issue, this command worked for me:

sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService

Jarvisjary answered 27/6, 2019 at 10:24 Comment(1)

This works most of the time for me but the issue keeps coming back. Tried an Xcode reinstall and re-downloaded the simulator but still having the same issue. – Cheddite 20/5 at 20:35

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Rebooting did not help me.

Installing/Reinstalling Simulators worked!!

Look under (XCode Preferences-> Downloads -> Components)

Straight answered 9/10, 2015 at 6:38 Comment(0)

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Rebooting my computer fixed this exact issue for me. Same error was thrown for both iOS7 and iOS8 simulators. I'm on OS X 10.10 and Xcode 6.1.

Dispersion answered 29/11, 2014 at 22:6 Comment(0)

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Maintain an accurate list of iOS simulators

When upgrading, you may drag around old simulators no longer available with your current version of Xcode. You can clean these by running this command in Terminal:

xcrun simctl delete unavailable

Quit Xcode first just for good measures. From the documentation:

Delete a device or all unavailable devices.

Rabia answered 24/11, 2015 at 17:15 Comment(1)

An error was encountered processing the command (domain=com.apple.CoreSimulator.SimError, code=159): Errors encountered while deleting multiple devices.

-- any ideas? – Chacon 8/8, 2016 at 14:10

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Just had this problem with Xcode 8 beta 5. I downloaded ios8 and 9 simulators, but was not able to run my app. I simply deleted derived data and rebooted my computer. It worked for me.

Thaumatology answered 30/8, 2016 at 15:21 Comment(0)

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