Hi, Ever since I updated to macOS Tahoe and started using Xcode 26 daily, I've run into an issue where it gets stuck very frequently when launching and running my app in the simulator. It happens with the main app target as well as when running unit tests. If I restart Xcode and the simulator app, it works fine again for a while, but after some use, it goes back to the same situation. In Activity Monitor, Xcode ends up at 1000% CPU utilization for a minute or more, basically rendering the simulator and the debugger stuck. If I untick the "Debug Executable" option in the scheme editor, it works fine as well. Anyone else run into the same situation, or are there any tips I can follow to fix this issue? It makes it really tedious to make changes and then be stalled for a minute or more to see the app run. I've restarted the Mac, erased the booted simulator as well. I'm on a MacBook Pro M4 Pro. Everything used to run fine before macOS Tahoe / Xcode 26 on my main device. In fact, I used to run macOS Tahoe / Xcode 26 beta versions on a separate partition without any problems.

I know this post isn't going to give a lot of details, but what I experienced tonight was so completely weird that I wanted to get it posted here in case others run into it: FIRST: All was well until I made a trivial change to a large Objective-C++ module. I suddenly got the idea to look at that line in the code review pane, to see if that area of code had ever had recent modifications. But, the entire module showed up as modified -- one giant change bar, with nothing on the right side of the code review pane, no matter what commit I selected. Then I noticed that the two lines of code which had all of 4 characters edited were no longer showing any change bars. Yet, the file showed up as "modified". Still, the exact line changes were not showing in the source code navigator, even though other files showed their changes. Note I'm connected to our remote repo on github. I did some command line git checks of the local repo, and the changes were there (as yet unstaged). So -- I figured, I'm gonna ask the Apple Coding Assistant what's up. And it gave some fantastic advice, especially on how to confirm the changes really were in the repo ready to stage and commit and push. Which I did. But despite following a couple hours of wonderful suggestions, I could never get the change bars back -- for this one specific file! (yes, the file was in the repo, and in the project -- everything seemed OK with the file itself -- nothing had changed in the project, which compiled and ran perfectly with my changes). SECOND -- suddenly, the AI assistant seemed to crash Xcode. When I went to re-run Xcode, it just crashed exactly the same. The crash log indicated "Xcode is crashing inside the IDEIntelligenceChat plugin while it’s trying to “apply changes” to a Source Editor buffer". Ultimately, I needed to restart Xcode holding down the SHIFT key. I could open other projects, but not the one I had been working on. So I turned OFF apple Intelligence (thanks, ChatGPT). That allowed me to launch. It sounds like some sort of corrupt Apple Intelligence chat logs and/or caches, which ChatGPT has given me extensive suggestions for deleting. I don't have the energy to attack that tonight -- I did an additional Time Machine backup and hope to take a closer look tomorrow. Ideally -- I'd rather NOT lose all my on-going coding assistant chats for this project -- I had some ongoing suggestions I was working on. But more concerning is the weirdness with changebars affecting this one 7,000 line .mm file. It doesn't seem like there's anything that should affect those change bars for ONE FILE that is in the repo and where changes can be seen from a git diff command line operation. If it's a bug -- I can live with it. But it's worrisome. Other than that, Xcode 26.2 has been running great! Unlike 26.1, which insisted on re-compiling all 600 files in my project every time I ran/debugged, 26.2 just does the 2-6 modified files -- a perfect incremental compile. I've saved HOURS of wasted unnecessary compilation since 26.2 was released.

After updating from Xcode 16 to the new Xcode 26 beta 3, running my iOS app becomes slow to the point of unusable. It builds and installs fine, but when running with the console, it lags about 20-50x compared to building and running with Xcode 16. I wanted to try our Xcode 26 to preview my new app icon made in icon composer but now I don't think it's worth the hassle. When running via simulator, the same performance issues. Anybody also struggling with slow on-device testing speed? I am on Sequoia 15.5.

I am using the latest version of Xcode 16, and I have created a GPX file in my project. However, I am unable to see or select the file to simulate the GPS location. I have attempted to uninstall and reinstall Xcode completely, but the issue persists. Has anyone encountered a similar problem? How can I resolve this? Thank you.

When creating an icon using icon composer, I cant upload a build to testflight/App Store connect. Running on device from Xcode works fine, but as soon as I archive and upload to App Store Connect, I get an error saying the icon contains an alpha channel

Submitted feedback FB17075016 Xcode 16.3 release macOS 15.4 iOS 18.4 / iPadOS 18.4 release builds Memory graph fails to build when targeting physical devices running release builds referenced above. Memory graph will build against a simulator device.

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)))

Will RC be allowed to upload to App Store Connect? I have tried a couple of times with 17A321 and I keep getting unsupported SDK or Xcode version. Submitted feedback FB20178551

Hello, I'm unable to run any test cases in Xcode 16 with the iOS 18 simulator. Steps to Reproduce: Create a new iOS project in Xcode 16 using the default iOS app template with the testing option checked. Run any test or UI test case by clicking the "Play" icon in the Test navigator. Xcode gets stuck at the "Testing" state indefinitely. Environment: macOS 15 beta 8 Xcode 16 beta 6 iOS 18 beta 7 simulator

When trying to launch an app built with Xcode in iOS12, differences occur depending on the macOS version on which Xcode is installed. When building with Xcode 26.2 (or Xcode 16.4) installed on macOS Sequoia, installing it on iOS 12 and tapping the app icon launches the app. When building with Xcode 26.2 (or Xcode 16.4) installed on macOS Tahoe, installing it on iOS 12 and tapping the app icon does not launch the app. The following log was displayed upon launch: Dec 15 11:46:35 xxx assertiond[58] <Notice>: Submitting new job for "com.xxx.sample" on behalf of <BKProcess: 0x10151a710; SpringBoard; com.apple.springboard; pid: 48; agency: SystemShell; visibility: foreground; task: running> Dec 15 11:46:35 xxx assertiond[58] <Notice>: Submitted job with label: UIKitApplication:com.xxx.sample[0x2dfd][58] Dec 15 11:46:35 xxx assertiond[58] <Notice>: Unable to get pid for 'UIKitApplication:com.xxx.sample[0x2dfd][58]': No such process (3) The same issue occurs with both .app and .ipa. I would like to know the technical reason behind this, if anyone knows, please let me know.

Hello all, I am trying to submit a request for endpoint security entitlement. I keep getting this error for weeks: This page isn’t working developer.apple.com is currently unable to handle this request. HTTP ERROR 500

My app start up has became horrid. It takes 1 minute to open SQLlite database for my rust core. Impossible to work... I have Address Sanitizer, Thread Perf Checker and Thread Sanitizer disabled...

We started seeing an access issue today when attempting to go to the Xcode Cloud tab in App Store Connect. When you navigate to https://appstoreconnect.apple.com/teams/:teamId/apps/:appId/ci we're seeing the following message: The page you’re looking for can’t be found. The page you’re looking for does not exist, or you do not have permission to view it. I am the account holder so it shouldn't be a permissions issue. Is there an ongoing outage or problem in Xcode Cloud? And, if so, where can I monitor this accurately?

Hello, my Apple Developer Program had expired 20 days ago, but i cant renew in any way (auto-renew dont work, i dont have "renew button" on web, dont have it in iOS and macOS developer apps, so i cant renew it. Has anyone encountered this problem? How can i solve it and renew my membership?

Hi everyone, I subscribed to the Apple Developer Program on Tuesday evening, February 15th, 2026. The payment has already been charged to my bank account, but my account still shows the status “Pending” with the message “Subscribe your membership”. It’s now been several days, and I haven’t received any confirmation email or any request for additional information. I already contacted Apple Support by email/phone without any response, but I’d like to know if other developers have experienced the same situation and how long it took before their account was activated. My Enrollment ID D72NJHL7JM Thank you, Rakan

With Xcode 14, the device selection on the bottom of the storyboard canvas has changed, and the iPhone 12 and 13 mini screens are no longer there, as well as there only being one model of iPad. Is there a way to add more devices to this section? I have simulators installed for these devices, and this is the way I've been checking compatibility so far, but this is not sustainable. I appreciate any help that you can give me.

Hello, I uploaded a new build to TestFlight, and it has been about an hour since the processing was completed. However, the update is still not showing up in the TestFlight app. From my experience, the update usually appears within 10 to 30 minutes, but this time it is taking unusually long. I’m wondering if anyone else has experienced a similar issue and found a solution. Any advice or guidance would be greatly appreciated. Thank you!

Created a new project in Xcode 16.3. While adding breakpoints app is crashing every time in Xcode and playground both. Tried with swift 5 and swift 6 getting same error. Crash reason : Couldn't find the Objective-C runtime library in loaded images. Message from debugger: The LLDB RPC server has crashed. You may need to manually terminate your process lldb-rpc-server-2025-04-14-092736.txt

I have an orphaned asset folder taking up 9.13GB located at: /System/Library/AssetsV2/com_apple_MobileAsset_iOSSimulatorRuntime/c0d3fd05106683ba0b3680d4d1afec65f098d700.asset It contains SimulatorRuntimeAsset version 18.5 (Build 22F77). Active Version: My current Xcode setup is using version 26.2 (Build 23C54). I checked the plist files in the directory and found what seems to be the cause of the issue: The "Never Collected" Flag: The Info.plist inside the orphaned asset folder explicitly sets the garbage collection behavior to "NeverCollected": <key>__AssetDefaultGarbageCollectionBehavior</key> <string>NeverCollected</string> The Catalog Mismatch: The master catalog file (com_apple_MobileAsset_iOSSimulatorRuntime.xml) in the parent directory only lists the new version (26.2). Because the old version (18.5) is missing from this XML, Xcode and mobileassetd seem to have lost track of it entirely. What I Have Tried (All Failed) Xcode Components: The version 18.5 does not appear in Settings -> Components, so I cannot delete it via the GUI. Simctl: xcrun simctl list runtimes does not list this version. Running xcrun simctl runtime delete 22F77 fails with: "No runtime disk images or bundles found matching '22F77'." Manual Deletion: sudo rm -rf [path] fails with "Operation not permitted", presumably because /System/Library/AssetsV2 is SIP-protected. Third-party Tools: Apps like DevCleaner do not detect this runtime (likely because they only scan ~/Library or /Library, not /System/Library). Has anyone found a way to force the system (perhaps via mobileassetd or a specific xcrun flag) to re-evaluate this folder and respect a deletion request? I am trying to avoid booting into Recovery Mode just to delete a cache file. Any insights on how AssetsV2 handles these "orphaned" files would be appreciated.

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.