Unable to download iOS simulator runtime 26.x on Xcode

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Created 1d

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Participants 2

Hi everyone,

I'm experiencing a persistent issue for months now where I'm unable to download the iOS 26 simulator Runtime. I've tried reinstalling Xcode and also Xcode Beta but same issue.

iOS 26 Simulator is also not on developers download page, so manual installation is impossible. And sadly I can't compile any code without having iOS 26 simulator installed.

Anyone able to get passed this?

Hardware: M1 Pro

OS: Tahoe 26.1

Heres the error

Download failed.
Domain: DVTDownloadableErrorDomain
Code: 41
User Info: {
    DVTErrorCreationDateKey = "2026-01-07 11:35:35 +0000";
}
--
Download failed.
Domain: DVTDownloadableErrorDomain
Code: 41
--
Failed fetching catalog for assetType (com.apple.MobileAsset.iOSSimulatorRuntime), serverParameters ({
    RequestedBuild = 23C54;
})
Domain: DVTDownloadsUtilitiesErrorDomain
Code: -1
--
Download failed due to not being able to connect to the host. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime)
Domain: com.apple.MobileAssetError.Download
Code: 60
User Info: {
    checkNetwork = 1;
}
--


System Information

macOS Version 26.1 (Build 25B78)
Xcode 26.2 (24553) (Build 17C52)
Timestamp: 2026-01-07T12:35:35+01:00

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Answer 1

DTS Engineer OP

Apple

1d

Thanks for your post.

It appears that you are experiencing difficulties downloading the iOS 26 simulator runtime, which is hindering your ability to compile and test your code. Are you utilizing the most recent version of Xcode from the App Store? The versions on your log file show that you are. The issue seems to be related to a network connection. As it seems can dns com.apple.MobileAsset.iOSSimulatorRuntime?

Please ensure that your network connection is stable and that there are no firewalls or network settings obstructing access to Apple’s servers. The error messages indicate a failure to establish a connection to a host, which may be attributed to network-related issues.

Although your setup appears compatible, it is advisable to verify that macOS 26.1 and Xcode 26.2 are fully updated. Occasionally, point updates can resolve unforeseen issues with downloads or simulator installations.

Attempt restarting your router, modem, and Mac to eliminate any temporary network glitches that may be interfering with connections to Apple’s servers.

If you are connected to a proxy or corporate network, ensure that your Mac’s network settings are correctly configured to permit connections to Apple domains. Temporarily disabling the proxy can also assist in diagnosing whether it is causing the issue. Examine Xcode logs for more detailed error information. You can locate these logs in or by utilizing the Console application to filter logs related to Xcode.

Have you tried it from a different location?

Albert Pascual   Worldwide Developer Relations.

0

Answer 2

Epikoder OP

1d

@DTS Engineer

Thank you for the reply, I have tried resetting my router, restarting my Mac, and also tried different networks. But it's the same issue.

I don't have firewall or Anti virus installed and still same error.

Xcode is fully updated (latest)

MacOS is Tahoe 26.1 (latest)

As you can see, using cli still throws similar error

➜  ~ xcodebuild -downloadPlatform iOS      
Finding content...
Automatically resolved architecture variant for platform iOS as 'arm64'.
2026-01-07 22:09:14.742 xcodebuild[71859:6206960]  DVTDownloadable: Download Failed. Downloadable: {
    architectures =     (
        arm64
    );
    authentication = none;
    category = simulator;
    contentType = cryptexDiskImage;
    dictionaryVersion = 2;
    downloadMethod = mobileAsset;
    fileSize = 8388683973;
    identifier = "com.apple.dmg.iPhoneSimulatorSDK26_2_arm64";
    isInternalContent = 0;
    isUserInitiated = 1;
    name = "iOS 26.2 Simulator (23C54)";
    patchableFrom =     (
    );
    platform = "com.apple.platform.iphoneos";
    simulatorVersion =     {
        buildUpdate = 23C54;
        version = "26.2";
    };
    version = "26.2.0.0";
}. Download failed.
➜  ~

Note: there's no iOS 26.x Simulator at https://developer.apple.com/download/all/?q=26.2 as opposed to previous versions which can be found here.

0