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.

Hello Apple Developer Community, I'm experiencing an issue with file download functionality in the iOS Simulator after updating to Xcode 26 RC (Build 17A321). Issue Description: When attempting to download files in the iOS Simulator via Safari, the download prompt appears correctly, but after tapping the 'Download' button, files are not being saved to the Files app. The download appears to do nothing with no error message, no indication of failure, but the file simply doesn't appear in Downloads or anywhere in the Files app. Environment: Xcode Version: 26.0 RC (17A321) iOS Simulator Version: 26.0 RC (23A339) Device Simulated: iPhone Air Steps to Reproduce: Open Safari in the iOS Simulator Navigate to a downloadable file (PDF, ZIP, etc.) Tap to initiate download Download prompt appears as expected Tap the 'Download' button Check the Files app → Downloads folder (empty) Expected Behavior: Files should download normally as they do on physical devices and as they did in previous Xcode versions. Actual Behavior: The download prompt dismisses after tapping 'Download', but no file appears in the Files app. No error message is shown, and there's no indication that the download failed, it simply appears as if nothing happened. Additional Information: Downloads work correctly on physical device (iOS 26 RC 23A340) This functionality worked properly in previous Xcode versions I have created a bug report to Feedback assistant: FB20190927 Thanks in advance for any assistance.

After upgrading to macOS 26.0 Tahoe and Xcode 26.0.1, I’ve noticed an issue with audio playback whenever the iOS Simulator is running. Device: MacBook Pro 13" (2020, Intel, 16GB RAM, 500GB SSD) Issue: Any sound played on the Mac (system sounds, music, videos) begins to break/distort once the Simulator is active. App Sounds: If the app running inside the Simulator plays audio, that audio also breaks/distorts. Previous Version: This issue did not occur on macOS Sequoia 15 or with Xcode 16. Everything was working fine before the upgrade.

Attempting to bring up the access point yields the following error log: [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy [GameCenterOverlayService] Could not create endpoint for service name: com.apple.GameOverlayUI.dashboard-service [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy [GameCenterOverlayService] Could not create endpoint for service name: com.apple.GameOverlayUI.dashboard-service [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy [GameCenterOverlayService] Failed to create GameOverlayUI Dashboard Remote Proxy The same code (which is a single line setting 'active' to true) works on physical devices and on the simulator in iOS 18.6 I haven't been able to find any mention of this issue online. Any suggestions or help greatly appreciated.

Hey there, I just upgraded to Mac OS Tahoe ,son an apple MacBook Pro 2019 16inch. am using IntellijIDEA and Flutter to develop a mobile app which I test on the simulator app running iOS 18.4 . the issue: when I start the simulator app. ( while in the loading phase and in the operation phase as well ), the audio from an already open YouTube tab on safari (this happens on chrome browser as well). the sound glitches and becomes Noise. a fix I found online is to kill the audio deamon on Mac OS, This works using the command: "sudo killall coreaudiod" this kills the audio process, (while the emulator is operational), then the macOS restarts the audio deamon then the audio works fine alongside with the simulator being open. I just want to ask is there a permanent fix for this? is Apple working on a fix for this in the upcoming update?

Since the latest Xcode has become available users in our environment are seeing this error any time they try to launch a simulator (Primarily iOS devices, but others provided the same error) We have tested on 16.4 and 26.0.1 with various suggested fixes including uninstalling and reinstalling all of Xcode. Nothing has helped.

I'm updating our app to support metal 4, but the metal 4 types don't seem to get recognized when targeting simulator. Is it known if metal 4 will be supported in the near future, or am I setting up the app wrong?

In previous versions of the simulator, it was possible to import files into the Files app by dragging them from the Finder into the Simulator. It appears that in the iOS 26 Simulator, this opens the file in Safari. I've only tried it with .json files so far. The documentation at https://developer.apple.com/documentation/xcode/sharing-data-with-simulator says that the original behaviour should happen: To add files to Simulator, select one or more files in Finder on your Mac, then click the Share button. Select Simulator from the share destination list. Choose the simulated device from the drop-down list. Simulator opens the Files app, and lets you select where to save the files. I'd love to learn if this is intentional behaviour, and if so, what workarounds there might be. I use this pattern quite a lot, as I have a HealthKit app, and I've built a system that allows me to export workouts as JSON files from a real device, that I can then import into a simulator for testing. Edit: I found a workaround. Make a folder in Files.app, then search for it within ~/Library/Developer/CoreSimulator/Devices. Open the folder in Finder, then add any files you want to be available in the Simulator.

Hello, been beating my head against the wall for a few days with this. Originally got the error in Xcode 16, through the course of troubleshooting uninstalled and reinstalled Xcode multiple times, upgraded Xcode to 23 - same result. Create a different user on my computer and try, same result. Xcode > Settings > Components show both iOS 26.0 and iOS18.6 simulator, however no simulators show in Xcode, and Xcode hangs when you try to create one. 'xcrun simctl list runtimes' shows this: iOS 18.6 (18.6 - 22G86) - com.apple.CoreSimulator.SimRuntime.iOS-18-6 (unavailable, liblaunch_sim.dylib could not be opened) iOS 26.0 (26.0 - 23A343) - com.apple.CoreSimulator.SimRuntime.iOS-26-0 (unavailable, liblaunch_sim.dylib could not be opened). Does anyone have any ideas on what the issue could be?

What I am trying to do is very simple. Environment description: macOS Catalina version 10.15.7 iOS Simulator version 12.3 Target device iPhone 11 (iOS 13.2.2) Open Safari > go to website > mictests.com Result: "Could not find any media devices. It is very likely that your browser does not allow access to these devices." The Simulator does have access to the microphone. I can use Siri just fine. Only Safari cannot access the mic. I'm really stuck here, any ideas are welcome.

I'm experiencing a persistent iOS Simulator app installation failure when running automated tests using Appium/XCUITest. The error occurs consistently across different simulator configurations and appears to be related to metadata handling during app installation. Error Details Primary Error: An error was encountered processing the command (domain=IXErrorDomain, code=2): Simulator device failed to install the application. Failed to create promise. Underlying error (domain=IXErrorDomain, code=2): Failed to set metadata for org.adblockplus.AdblockPlusSafari Failed to create promise. Host info: host: 'Client641', ip: 'fe80:0:0:0:18b4:d9ba:1e92:bc37%en0' Build info: version: '4.26.0', revision: '8ccf0219d7' System info: os.name: 'Mac OS X', os.arch: 'aarch64', os.version: '26.0', java.version: '22.0.2' Driver info: io.appium.java_client.ios.IOSDriver Command: [null, newSession {capabilities=[Capabilities {appium:app: /Users/n.bhadoria/IdeaProje..., appium:automationName: XCUITest, appium:deviceName: iPhone 16 Pro, appium:fullReset: true, appium:includeSafariInWebviews: true, appium:isHeadless: false, appium:language: en, appium:locale: EN, appium:newCommandTimeout: 60, appium:platformVersion: 18.6, appium:processArguments: {env: {featureFlags: login=false,subscription=false, testPagesEnabled: true}}, appium:wdaLaunchTimeout: 120000, platformName: IOS}]}] Capabilities {appium:app: /Users/n.bhadoria/IdeaProje..., appium:automationName: XCUITest, appium:deviceName: iPhone 16 Pro, appium:fullReset: true, appium:includeSafariInWebviews: true, appium:isHeadless: false, appium:language: en, appium:locale: EN, appium:newCommandTimeout: 60, appium:platformVersion: 18.6, appium:processArguments: {env: {featureFlags: login=false,subscription=false, testPagesEnabled: true}}, appium:wdaLaunchTimeout: 120000, platformName: IOS} Environment Information Hardware & OS: Mac: Apple Silicon (M2 Pro) macOS: 26.0 (Sequoia) Xcode: 16.0 & Version 26.0.1 (17A400) iOS Simulator: Multiple configurations tested Affected iOS Versions: iOS 18.6 (iPhone 16 Pro) iOS 26.0 (iPhone 17 Pro) Issue appears consistent across iOS versions Development Setup: Project: iOS Safari Extension app (Adblock Plus) Bundle ID: org.adblockplus.AdblockPlusSafari App Type: Safari Extension with main app component Test Framework: Appium 2.18.0 with XCUITest driver 9.3.1 Language: Swift/Kotlin (test automation) Build Configuration: App built from Xcode DerivedData Valid development signing App installs and runs normally when launched directly from simulator Issue only occurs during automated installation via Appium/XCUITest Reproduction Steps Start iOS Simulator (tested on iPhone 16 Pro iOS 18.6, iPhone 17 Pro iOS 26.0) Launch Appium server (version 2.18.0) Attempt to install app via XCUITest driver with capabilities: platformName: iOS deviceName: iPhone 16 Pro (or iPhone 17 Pro) platformVersion: 18.6 (or 26.0) automationName: XCUITest app: /path/to/AdBlock_for_Apps.app bundleId: org.adblockplus.AdblockPlusSafari fullReset: true 4. Installation fails with metadata error Additional Context What works: Manual app installation through Xcode Manual app launch from simulator home screen App functionality when installed manually Works consistently on both iOS 18.6 and 26.0 when installed manually What fails: Automated installation through Appium/XCUITest on iOS 18.6 Automated installation through Appium/XCUITest on iOS 26.0 Occurs consistently across clean simulator instances Happens with both fresh simulators and existing ones Cross-Version Testing: Tested on multiple iOS simulator versions (18.6, 26.0) Same error occurs regardless of iOS version Different device types show same behavior (iPhone 16 Pro, iPhone 17 Pro) Troubleshooting Attempted: Clean simulator reset on both iOS versions Different iOS versions (18.2, 18.6) Verified app signing and provisioning profiles Checked simulator logs for additional details Tested with different Appium capabilities Business Impact This is blocking our automated test suite for iOS Safari Extension across multiple iOS versions, which is critical for regression testing and CI/CD pipeline. The app works perfectly when installed manually on all tested iOS versions, but automated testing infrastructure cannot proceed on any iOS version. Any insights or workarounds would be greatly appreciated. Happy to provide additional logs, configurations, or testing if needed. Xcode Version: 16.0 (16A242d) iOS Simulator Versions: iOS 18.6, iOS 26.0 Relevant SDKs: iOS 18.0, iOS 26.0, Safari Extensions

We are seeing some unexpected differences in the appearance of our App when run on a real iPhone (iOS 26 final release) compared to iOS 26 simulators in Xcode 26. Our App run in the iOS 26 simulators (for any iPhone model we try) shows more Liquid Glass effects / artifacts than when run on real devices: In Light Mode buttons in the top Navigation Bar have a surrounding bubble on the simulators. (See attached screen shots.) A SwiftUI Picker element shows more elaborate Liquid Glass transition effects. Also: some UI elements are positioned differently on the simulators compared to a real device. (See the search field under the header on the attached screen shots.) The simulators have in the past been very faithful to the real devices. Is there a setting that controls this behaviour? For the simulator I have: macOS 26.0 Xcode Version 26.0 (17A324) Simulator is iPhone 15 / iOS 26.0 (23A343) Real device is: iPhone 16e iOS 26.0 (23A341)

For difficult reasons I won’t get into, I ended up manually downloading the latest iOS 26 simulator runtime. I now have a file named 78756498-8AB4-4E5A-986C-7AA435758657.aar copied to my Mac. How do I get this archive installed so Xcode 26 recognizes it as a proper simulator runtime component? All searching I‘ve done for manually installing simulators references dmg files and older versions of Xcode. There’s no mention of aar files. When I tried the command: sudo xcrun simctl runtime add ./78756498-8AB4-4E5A-986C-7AA435758657.aar I get the result: An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=22): Error while creating AEA backend Invalid argument I tried to use Archive Utility to open the file but that just says it is unable to expand the file. I even tried renaming the file with a dmg extension and then tried mounting the file and I get the same “AEA backend” error. My Mac doesn’t have sufficient Internet access to let me download and install this normally through Xcode. I need to find a way to get this file installed manually.

xcode 15.2, mac m2 mini, 14.2.1 sonoma i need a pdf file to stage my app for screen shots for the market. icloud wont sync, cant drag files to the home screen or any screen, it just does not work. i am at the end of my rope here, i just need some screen shots, my app is approved and ready am i wrong>? is there a way to do this or is it just broken now in the name of (lazy) security? edit--the more i read the more i angry and frustrated i get. this is broken and will not be fixed. i need to just workaround via email. so happy my second 100 dollar developer subscription bill is coming up!

Xcode build done. 0.7s Failed to build iOS app Uncategorized (Xcode): Unable to find a destination matching the provided destination specifier: { id:42969747-3560-448B-8EB3-CB5ED88D75C1 } Available destinations for the "Runner" scheme: { platform:macOS, arch:arm64, variant:Designed for [iPad,iPhone], id:00008132-0004256C34A1801C, name:My Mac } { platform:iOS, id:dvtdevice-DVTiPhonePlaceholder-iphoneos:placeholder, name:Any iOS Device } { platform:iOS Simulator, id:dvtdevice-DVTiOSDeviceSimulatorPlaceholder-iphonesimulator:placeholder, name:Any iOS Simulator Device } Could not build the application for the simulator. Error launching application on iPhone 17.

Upgrading from XCode 16 to 26, I redownloaded the simulators, and now I'm having a blank simulator choice that I cannot seem to do anything about. When pressing the + at the bottom, Xcode stops responding. Things I've tried; Reinstalling Xcode (after removing /devlopers) Changing minimum deployments (to any version) Changing iOS Deployment Target (to any iOS version) Any clues on what I'm missing here? It was working on XCode 16 yesterday. Images https://preview.redd.it/blank-simulators-xcode-26-v0-g7h0rkdt1npf1.png https://preview.redd.it/blank-simulators-xcode-26-v0-zze2zsuv1npf1.png

Hello there! I’m currently stuck with Xcode 26.0 beta 6 (17A5305f), as I can’t download the latest SDK/Simulator for iOS 26.0 beta 6 (23A5324a). The download constantly fails for days now with the following error message: (-67061 invalid signature (code or signature have been modified) Domain: SimDiskImageErrorDomain Code: 5 User Info: { DVTErrorCreationDateKey = "2025-08-26 21:11:30 +0000"; unusableErrorDetail = ""; } -- (-67061 invalid signature (code or signature have been modified) Domain: SimDiskImageErrorDomain Code: 5 User Info: { unusableErrorDetail = ""; } -- System Information macOS Version 15.6.1 (Build 24G90) Xcode 26.0 (24208.7) (Build 17A5305f) Timestamp: 2025-08-26T23:11:30+02:00 I’ve already tried re-downloading the Xcode beta 6 from the Apple Developer site. I’ve also tried restarting my Mac and even tried to use the command line to install iOS 26 beta SDK via xcodebuild -downloadPlatform iOS -exportPath ~/Downloads (as noted here). This lead to the same error message. Can someone help? I’m unable to develop my apps right now! 🫠 I’ve also filed a feedback: FB19915834

Hello everyone, I'm developing a CarPlay app and am trying to test it with the dock on the right side of the screen, as is standard for right-hand drive vehicles like those in Japan. Currently, the CarPlay Simulator always displays the dock on the left, and I can't find an option to change its position. This is important for ensuring a proper user experience for my target market. Has anyone figured out how to configure the simulator for RHD layouts? Any guidance on how to move the dock to the right would be greatly appreciated. Thanks in advance for your help!

I am scheduling critical user notifications with a custom sound. This worked for years both on devices and in the simulator. Since Xcode 26 it crashes in simulator. Example let content = UNMutableNotificationContent() content.title = "Critical" content.body = "Example" content.sound = UNNotificationSound.criticalSoundNamed(UNNotificationSoundName("notification.aiff"), withAudioVolume: 0.5) content.interruptionLevel = .critical let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 10, repeats: false) let request = UNNotificationRequest(identifier: "exampleCriticalNotification", content: content, trigger: trigger) UNUserNotificationCenter.current().add(request) It seems that simpler variants such as just content.interuptionLevel = .critical or just content.sound = UNNotificationSound.defaultCritical also crash. I assume that critical notifications is a small niche use case but i still hope this gets fixed. This is filed as FB20272392 with a full crash log.

While preparing automated screenshots with Xcode UI tests for the iOS 26 release, I noticed that this simple line of code app.buttons["myTabItem"].tap() doesn't always work, both on iPhone and iPad Simulator. In fact, it rarely works. Even when repeating the same test, mostly it fails on that line, but a few times it works and I can see the tab item change in the simulator. My main view looks like this: TabView { MyTab1() .tag(tag1) .tabItem { Label("label1", systemImage: "image1") } MyTab2() .tag(tag2) .tabItem { Label("label2", systemImage: "image2") .accessibilityIdentifier("myTabItem") } The error I get is Failed to tap "myTabItem" Button: No matches found for Elements matching predicate '"myTabItem" IN identifiers' from input In the given list of buttons, I see the tab items with their labels, but none of them seem to have an identifier, while other buttons have the correct identifier. I wonder how this can only sometimes work. I tried isolating the issue by iteratively commenting out parts of the SwiftUI code, but unfortunately the behaviour seems erratic. When a change results in the issue not happening anymore, undoing the last X changes often causes the issue to stay away, even with configurations that previously had the issue. I've already spent almost a whole day trying to find the root cause, but with such apparently random behaviour it has proven impossible. Of course, I cannot reproduce the issue with a fresh test project, so the only way to reproduce it with 95% probability is running my original project. Has anyone had the same issue, or does anyone know how I could debug this to find out what causes my UI test to not be able to tap another tab item?

We have a simple workflow that just runs the Test action on my unit_tests scheme (see Xcode Cloud workflow configuration screenshot). The workflow is configured to use Xcode 16.4 (Latest Release), macOS Sequoia 15.6 (Latest Release), and iOS 18.0 simulators. Today, this workflow has been consistently running indefinitely. The Xcode cloud runner tries to launch the simulator to execute the tests, but it fails. See the error message in the screenshot from Xcode Cloud logs. Link to corresponding build is in my Feedback Assistant ticket. It continues to retry this operation for a very long time — I had one job that ran for over 90 minutes. Link to corresponding build also in that same Feedback Assistant ticket. Are Xcode Cloud runners perhaps currently undergoing maintenance? Or is something else going on. I would appreciate if Xcode Cloud usage from today could be refunded to my team’s account. Feedback Assistant ticket #FB20195292. Error message: MyApp encountered an error (Failed to prepare device 'iPhone 16' for impending launch. (Underlying Error: Unable to boot the Simulator. launchd failed to respond. (Underlying Error: Failed to start launchd_sim: could not bind to session, launchd_sim may have crashed or quit responding)))