Xcode 10.3 - No Simulators Available

Developer Tools & Services Xcode
SuperWomble OP
Created Jul ’19
Replies 20
Boosts 0
Views 43k
Participants 19

Xcode 10.3 (10G8) (App Store)

Mojave 10.14.5 (18F132)


Problem: No Simulators appear in the active Scheme popup menu.


The Simulators were available and working in Xcode 10.2.1


The Download Simulators window informs me that iOS 10.3.1 is the current Simulator and that the latest iOS Simulator available for download is iOS 12.2.


If I attempt to perform Add Additional Simulator (e.g. iPhone XR), I get the error:


Invalid runtime: com.apple.CoreSimulator.SimRuntime.iOS-12-4



I have reinstalled Xcode 10.2.1 alongside Xcode 10.3.


When using the newly reinstalled Xcode 10.2.1. the Simulators are are available, and the chosen Simulator (iPhone XR - 12.2) works.


$ xcrun simctl list runtimes

== Runtimes ==

iOS 9.3 (9.3 - 13E233) - com.apple.CoreSimulator.SimRuntime.iOS-9-3

iOS 10.3 (10.3.1 - 14E8301) - com.apple.CoreSimulator.SimRuntime.iOS-10-3

iOS 12.4 (12.4 - 16G73) - com.apple.CoreSimulator.SimRuntime.iOS-12-4

tvOS 12.4 (12.4 - 16M567) - com.apple.CoreSimulator.SimRuntime.tvOS-12-4

watchOS 5.3 (5.3 - 16U567) - com.apple.CoreSimulator.SimRuntime.watchOS-5-3


Any suggestions are appreciated.

Answered by automationair in 372950022

I had the same issue. Rebooting my computer solved it.

Replies  20
Boosts  0
Views  43k
Participants  19
Bananafish OP
Aug ’19

Also try reinstalling xcode 10.3 command line tools (was helpful for me)

0
NadilaDithmal OP
Aug ’19

It worked. Cheers!

0
jagoth jyoti OP
Oct ’19

Thanks I dont know how and why. But restarting helped in my case too.

0
ntguilty OP
Jun ’20
it's all instruction to solve the problem of:

1) XCode.app from Applications
2) ~/Library/Developer (warning, can contain useful things like Archives)
3) restart your MacBook
4) reinstall xcode
0
jayprakashsharma7 OP
Aug ’20
Reboot your system
0
Xcode 10.3 - No Simulators Available
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