Could not download iOS 17.0.1 Simulator (21A342).

I had the same problem since yesterday. Now the download completed. I don't know why. Be patient and try again and again.

2023-10-21 14:20:12.433 Xcode[6356:1443667] DVTDownloadable: Observed finish. Stop observing simulator updates. error: (null) 2023-10-21 14:25:42.218 Xcode[6356:1446770] DVTDownloadable: Download Failed. Downloadable: https://download.developer.apple.com/Developer_Tools/iOS_17.0.1_Simulator_Runtime/iOS_17.0.1_Simulator_Runtime.dmg. Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorCodeKey=-2102, NSURLSessionDownloadTaskResumeData=<CFData 0x600001c0ff60 [0x1dfc4b720]>{length = 24878, capacity = 65536, bytes = 0x3c3f786d6c2076657273696f6e3d2231 ... 2f706c6973743e0a}, NSUnderlyingError=0x600001b422e0 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_kCFStreamErrorCodeKey=-2102, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDownloadTask <BCEE6F1A-FFF5-452C-BE24-6B0C812B019C>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDownloadTask <BCEE6F1A-FFF5-452C-BE24-6B0C812B019C>.<1>" ), NSLocalizedDescription=The request timed out., NSErrorFailingURLStringKey=https://download.developer.apple.com/Developer_Tools/iOS_17.0.1_Simulator_Runtime/iOS_17.0.1_Simulator_Runtime.dmg, NSErrorFailingURLKey=https://download.developer.apple.com/Developer_Tools/iOS_17.0.1_Simulator_Runtime/iOS_17.0.1_Simulator_Runtime.dmg, _kCFStreamErrorDomainKey=4}

Same, keep trying all day without success: `Could not download iOS 17.0.1 Simulator (21A342). Domain: NSURLErrorDomain Code: -1005 Recovery Suggestion: The network connection was lost. User Info: { DVTErrorCreationDateKey = "2023-10-23 11:17:32 +0000"; DVTRecoveryBlockKey = "<NSGlobalBlock: 0x108f8c810>"; NSLocalizedRecoveryOptions = ( Cancel ); NSRecoveryAttempter = "<_DVTErrorRecoveryHandler: 0x60000003fe80>"; }

System Information

macOS Version 14.0 (Build 23A344) Xcode 15.0.1 (22266) (Build 15A507) Timestamp: 2023-10-23T19:17:32+08:00`

There is the same problem, but with other error message. Downloading up to 30% and throw an error:

Could not download iOS 17.0.1 Simulator (21A342). Domain: NSURLErrorDomain Code: -1001 Recovery Suggestion: The request timed out. User Info: { DVTErrorCreationDateKey = "2023-10-23 12:43:41 +0000"; DVTRecoveryBlockKey = "<NSGlobalBlock: 0x108ef8810>"; NSLocalizedRecoveryOptions = ( Cancel ); NSRecoveryAttempter = "<_DVTErrorRecoveryHandler: 0x6000263da0f0>"; }

System Information

macOS Version 14.0 (Build 23A344) Xcode 15.0.1 (22266) (Build 15A507) Timestamp: 2023-10-23T14:43:41+02:00

I finally got the proposed solution to work.

Follow the instructions here:

https://developer.apple.com/documentation/xcode/installing-additional-simulator-runtimes#

Firefox will struggle to download the Runtimes as well, but until Xcode you can resume the download again and again and it will continue from where it left off last. Restart after downloading the runtime, then run the commands in Terminal.

@gentleben10 i tried downloading from xcode and from terminal. both didnt continue from where it stopped. how did u manage to download them

Try to download seperately with terminal command. Preferably when the servers are free (It's early in the morning in my case). It might take a while.

xcodebuild -downloadPlatform iOS

I had exactly the same error as described above: The network connection was lost. I tried lots of things (ID, certificate, cache, etcetera). But in the end it was just a matter of luck. I guess that the Apple server is quite busy. You need to be lucky to click on the 'get' button at the right time.

Proof:

Registering simulator runtime with CoreSimulator failed. Domain: DVTDownloadableErrorDomain Code: 29 User Info: { DVTErrorCreationDateKey = "2024-04-13 11:49:33\U202fAM +0000"; }

Registering simulator runtime with CoreSimulator failed. Domain: DVTDownloadableErrorDomain Code: 29