Some Macs recently received a macOS system update which disabled the simulator runtimes used by Xcode 15, including the simulators for iOS, tvOS, watchOS, and visionOS. If your Mac received this update, you will receive the following error message and will be unable to use the simulator: The com.apple.CoreSimulator.SimRuntime.iOS-17-2 simulator runtime is not available. Domain: com.apple.CoreSimulator.SimError Code: 401 Failure Reason: runtime profile not found using "System" match policy Recovery Suggestion: Download the com.apple.CoreSimulator.SimRuntime.iOS-17-2 simulator runtime from the Xcode To resume using the simulator, please reboot your Mac. After rebooting, check Xcode Preferences → Platforms to ensure that the simulator runtime you would like to use is still installed. If it is missing, use the Get button to download it again. The Xcode 15.3 Release Notes are also updated with this information.

I feel I'm missing something really obvious, but how are files copied to simulators in Device Hub now? From my MacOS Finder, there's no share with simulator option and drag and drop is ignored. What am I missing?

Anyone know if it is possible to run our app from Xcode 26.3, in an iOS 27 simulator? I see several are listed in the simulator-selection menu but thus far no luck building for them. Background: Trying to see what our app looks like in iOS 27 even before scene delegate migration is complete.

On Xcode 26 and earlier versions, two-finger touches were possible on Simulator by holding down the option key. On Xcode 27 with Device Hub, this is no longer possible. While the trackpad can be used for pinch and rotate gestures, two-finger taps and two-finger pans are not possible. This is a major regression that renders our app basically unusable in Device Hub. We rely on two-finger tap and pan gestures to navigate our 3D models. Not being able to do this in Device Hub and in Xcode previews would be a huge loss. Is this actually no longer supported or am I missing something?

Not able to copy anything from device hub

Hi. Today we upgraded to Xcode 27 and installed the iOS 27 runtime component. Now storyboards cannot be opened. Xcode only displays "Loading iOS 27.0..." Besides, we cannot create simulators either. iOS 27 runtime appears missing even though it is installed. We tried removing and reinstalling the runtime but it didn't work. Right now all development came to a halt. Please help.

The iOS 17 simulator does not respond at all when I try to interact with it. The simulator is not frozen as I can still control appearance and launch apps via the right sidebar. Things like the home button and clicking on the screen simply don’t work. I am using Xcode 27 beta 6. Feedback ID: FB24674634

Xcode version 26.6 (17F113) MyOwnKeyboard-PAD app looks OK using simulator iPad Air 11-inch(M4). It automatically reformats to all orientations using only left and right landscape selected in General, Deployment Info. The submitted app 1.9 (4) had the portrait checked which was an error. I tried to update to version to 1.10 without portrait and upside down, but Validation states it must have all orientations needed. I tried setting all orientations and the simulator cuts off the sides. I am using a new mini M4 with Tahoe 26.6.2 Converted from an older developer mini using Migration Assistant. After conversion Xcode could not find xcspace files and apps locked up. I had to create new apps with different bundles which got conflicted in AppConnects causing rejects. When new versions are submitted, old versions cannot be removed because of submission states. Causing similar binaries, design and scam. I got trapped in the process! I have replied to AppConnect ref. binaries, design and scam. I hope someone can straighten this mess out. The good new is the free MyOwnKeyboard-PHONE analytics look OK with 4,000 impressions and 38 downloads and 172 product page reviews. It's a start! Thank you. Charlie Coupe Designer/Coder 2026sep16

Tried to execute our XCUITest test suite with XCode 27b6. The test plan is set to run in parallel. When executing tests locally with XCode 26, I can see the clone simulators executing the test (which is useful for debugging the test). With XCode 27b6 and Device Hub, I do not see the clone simulators executing, nor do I see a setting or menu item in Device Hub to show those clone simulators. There is no equivalent to the "Show Parallel Testing Devices" menu item in the XCode 26 sim. Am I missing something or is this a regression in XCode 27?

Before Device Hub (27.0), you could drag a photo onto an iOS Simulator window and the photo would be added to that simulated device's Photos library. This does not work in Device Hub (27.0). Bummer if your app has to do with photos.

How to download iOS 27.0 Universal simulator in Xcode 27.0 Beta 1 ? xcodebuild -downloadPlatform iOS -exportPath ~/Downloads -architectureVariant universal -buildVersion 27.0 Finding content... iOS 27.0 (universal) is not available for download.

I cannot type any symbols from the keyboard anymore. This is not related to my app. You can just open the simulator, open the settings, go to account, and try to type an email address. It’s impossible to type the '@' it inserts '2' instead. All symbols are discarded as if the shift key is ignored. You can only type numbers. And if you select the @ on the virtual keyboard and press enter, the "next" step is selected and asks for the password. Anyone with the same issue about the keyboard? It was perfectly working in Xcode 26.6

I am using Xcode 27 beta 3 Device Hub with iPadOS Simulator. The iPadOS app I'm developing supports a standard two finger pinch/unpinch gesture to zoom in and out. In Xcode 26 Simulator, I could hold down the option key to zoom in and out with a two finger multitouch gesture. How can I effect a two finger multitouch zoom gesture with Xcode 27 beta 3 Device Hub iPadOS Simulator? I tried holding down the option key, which did not work. I tried using a macOS two finger multitouch pinch/unpinch zoom gesture, but this did not work. I've spent about 30 minutes investigating this, searching through Device Hub Settings and macOS Settings and exploring different permutations of options and reading Xcode 27 beta release notes. The Option key worked great in Xcode 26 iPadOS Simulator. I'd appreciate any assistance that an Apple Engineer could provide. Thank you.

My app relies on two-finger tap for some interactions. This was easy in the old simulator by holding down option while clicking. Is there an equivalent interaction in Device Hub? (Option-click no longer seems to work.) If not, will this be added back in a future beta?

I am unable to download and install the iOS Simulator runtime in Xcode 26.6. Environment: MacBook Air with Apple silicon macOS Tahoe 26.6 Xcode 26.6 Build version 17F113 xcode-select -p: /Applications/Xcode.app/Contents/Developer xcodebuild -showsdks correctly reports: Simulator - iOS 26.5 -sdk iphonesimulator26.5 However: xcrun simctl list runtimes returns: == Runtimes == No Simulator runtime is installed. In: Xcode > Settings > Components I attempted to install: iOS 26.5.1 + iOS 26.5 Simulator but it remains at: Preparing... for a very long time without actually downloading the runtime. I also tried: xcodebuild -downloadPlatform iOS This eventually failed with: Download was cancelled exit code 70 I also tried: xcodebuild -downloadPlatform iOS -exportPath ~/Downloads/XcodePlatforms The destination directory remains at 0 bytes. Checks already completed: More than 860 GiB free disk space Mac restarted Xcode quit and reopened xcode-select points to the correct Xcode installation /etc/hosts contains no Apple blocking entries gdmf.apple.com resolves correctly HTTPS connectivity to gdmf.apple.com works Apple MobileAsset / software update services are running iOS Simulator SDK itself is installed correctly The project can compile for iphonesimulator26.5, but Simulator execution and tests are blocked because no runtime can be installed. Questions: Is this a known issue with Xcode 26.6? Is there an official alternative way to download the iOS Simulator runtime? Can I install an earlier supported iOS Simulator runtime instead? Is there a MobileAsset or Xcode cache reset procedure recommended by Apple? Thank you.

I am getting FoundationModels.LanguageModelError error -1 when trying to use Foundation Models on the visionOS 27 simulator. It works on the iOS 27 simulator. Is this a bug with the visionOS 27 simulator specifically?

Hello, Turning on iCloud Drive sync does not work in iOS 27 simulators. When I sign into an iCloud account and try to enable it by tapping the switch in the iCloud Drive settings within the iCloud account area of Settings, the switch doesn't stay on and the feature is never enabled. I don't get an error or anything telling me what's going on. Anyone else seeing this? When I create a new simulator for iPhone 26.5 it seems to work fine just as before. I've tested this with Xcode 26.6 17F113 and Xcode 27 RC 27A266a.

Apple M1 Pro, 26.5.1 (25F80) XCode 27.0 Beta (27A5194q) Command Line tools for Xcode 27 are installed. Device Hub Version 27.0 (235.4.2) Within device hub I can not create iOS 27 simulators. Only the 26.5 simulators are listed there. I installed the iOS 27.0 SDK. Also deleted and reinstalled it. The computer was restarted. No change. I am unable to create the proper iOS 27 Simulators. Any idea why this is not working? Thanks for the help upfront.

Where did the simulator "Slow animations" mode go? I can't find it in the Xcode 27 beta 2 "Device Hub". This feature is incredibly useful. I'm assuming it's a glitch that it's missing, or I'm just not looking in the right place.

Environment Xcode 27.0 (Build 27A5194q) macOS 27.0 (Build 26A5353q), Apple Silicon Command Line Tools 27.0 Summary The iOS 27.0 (24A5355p) and watchOS 27.0 (24R5289n) Simulator runtimes download and mount successfully, but never register as usable. Both fail in exactly the same way. Every older runtime (e.g. iOS 26.2 / 23C54) works fine. What I see xcrun simctl list runtimes does NOT list iOS 27 or watchOS 27. They appear only under xcrun simctl runtime list (disk images), as: iOS 27.0 (24A5355p) State: Ready Image Kind: Patchable Cryptex Disk Image Signature State: Unknown Mount Path: /private/var/run/com.apple.security.cryptexd/mnt/... They never get promoted to /Library/Developer/CoreSimulator/Volumes/ the way working runtimes do. Where it actually breaks simdiskimaged finds and mounts the runtime with no error: "Found runtime bundle on disk image at: .../iOS 27.0.simruntime" "Got supported architectures back ... arm64" The runtime IS present in /Library/Developer/CoreSimulator/Images/images.plist, and its cryptex personalization manifest exists in /Library/Developer/CoreSimulator/Cryptex/Personalization/. BUT iOS 27 (24A5355p) and watchOS 27 (24R5289n) are the ONLY two images in the index whose signatureState is not verified. Every other runtime shows signatureState => verified. CoreSimulatorService therefore never registers them. So the cryptex mounts and the personalization ticket is present, but signature verification against that manifest never completes for these two new runtimes. Things I have already tried (no change) Deleted and re-downloaded the runtime via xcodebuild -downloadPlatform iOS (fresh image, identical result) Restarted CoreSimulatorService; ran sudo xcodebuild -runFirstLaunch Full reboot (cryptex re-mounts at boot but is still never verified/promoted) Deleted images.plist and let it rebuild Verified: system clock correct; gs.apple.com and ppq.apple.com reachable on 443; ~85 GB free disk; iphoneos27.0 SDK build (24A5355p) matches the downloaded runtime; simctl runtime match list shows 24A5355p as the chosen/default runtime. The standalone Simulator runtime .dmg for iOS 27 is not yet on Developer Downloads, so xcrun simctl runtime add isn't an option. Questions Is anyone else seeing iOS 27 / watchOS 27 runtimes stuck at Signature State: Unknown / signatureState != verified on this beta? Is there a way to force re-verification of an already-downloaded cryptex runtime without a standalone .dmg? Is this a known issue in the current beta? (FB filed.) Thanks!

I found a SwiftUI presentation bug with multiple alerts and sheet presentations. I submitted a Feedback Assistant report too: Feedback ID: FB24621651 The issue is that a native SwiftUI alert dismisses immediately after appearing when it is presented from a view inside a nested sheet. Minimal hierarchy: TabView -> NavigationStack -> outer sheet -> NavigationStack -> detail view -> inner sheet -> alert The inner sheet contains a normal button: struct InnerSheetRoot: View { @State private var showAlert = false var body: some View { Button("Show Alert") { showAlert = true } .alert("Alert from inner sheet", isPresented: $showAlert) { Button("OK") {} } message: { Text("This alert should remain visible.") } } } Steps to reproduce Open the attached sample project. Select the Storage tab. Tap any storage row. In the outer sheet, tap Open Inner Sheet. In the inner sheet, tap Show Alert. Actual result The alert appears briefly and dismisses immediately. It may disappear before OK can be tapped. Expected result The alert should remain visible until the user taps OK. The issue disappears when I remove either the root TabView or the second NavigationStack. It also disappears when the inner sheet is removed. Environment: Xcode: Xcode 26.6 macOS: macOS 26.6.2 iOS: iOS 26.5 Device or simulator: iPhone Simulator Deployment target: iOS 26.0 Swift version: Swift 6 The example project and a screen recording are attached to the Feedback Assistant report, but they can also be found here. I would appreciate confirmation of whether this is a known SwiftUI presentation-host issue and whether there is a recommended way to present alerts from content inside nested sheets.