Xcode 26.2 cannot delete the Simulator under Other Installed Platforms. After testing, I found that Simulator Architecture Variant of the Universal type cannot be deleted, but the Apple Silicon type can be deleted. Every time I delete it, it reappears after restarting the computer.

Hello, We are experiencing a recurring issue when running iOS apps in the Rosetta simulator on Xcode 26. Environment: Xcode: 26.0 macOS: 15.7.3 Simulator: Intel-based (Rosetta) simulators Languages: Both Swift and Objective-C Issue: When launching an app in a Rosetta simulator, the app frequently freezes or fails to run. In many cases, Xcode reports that the debugger has lost connection. Xcode error message: Lost connection to the debugger on “iPhone 12”. Domain: IDEDebugSessionErrorDomain Code: 22 Failure Reason: Message from debugger: lost connection Console log: assertion failed: GPR thread_set_state is unimplemented for NewThread (ThreadContextRegisterState.cpp:920 host_gpr_state_from_guest_state) Observed behavior: Rebuilding after fully quitting the simulator sometimes resolves the issue temporarily. Disabling Scheme > Run > Debug executable allows the app to run normally, but debugging (breakpoints, etc.) becomes unavailable. The issue does not occur: On real devices On ARM-based simulators When building with Xcode 16 using Rosetta Has anyone encountered this issue with Xcode 26 and Rosetta simulators? Is this a known bug, and are there any recommended workarounds besides disabling the debugger or restarting the simulator? Thank you in advance for any insights or guidance.

› It is reasonable to assume Xcode AI integration means AI being able to change the build target... “Why can Xcode Intelligence see source files but not .xcodeproj/project.pbxproj for direct edit?” “Is this a known limitation/bug in Xcode 26.3 RC Project Context or MCP Xcode Tools?” “Any required entitlement/setting beyond Intelligence > Xcode Tools for build-setting edits?”

Since one of the last updates of XCode, there are two very annoying bugs in the simulator that just don't get fixed. What's going on Apple? You kill my productivity. There is a red bar reading "rdar" and some numeric string at the top. You can get rid of it by going to Settings -> Developers -> Zoom -> Larger Text (then change it back). Took a while to find that. I have a German laptop with a QWERTZ keyboard layout. Now when I type, it somehow sends keys from an US keyboard to the simulator. Since I don't have the labels, I don't know what the hell I'm typing. Very frustrating. Please fix this.

I've added NSAlarmKitUsageDescription to Info.plist and InfoPlist.xcstrings. The localized string is being used when I run the app, but Xcode is marking the string as "stale" in InfoPlist.xcstrings. This doesn't occur for any of the other UsageDescription strings in our app, such as NSPhotoLibraryUsageDescription and NSSiriUsageDescription. This occurs in both Xcode 26.2 and Xcode 26.3 RC. Is this a known issue? Should I just mark the string as being managed "Manually" instead of "Automatically" to make the warning go away?

I'm importing SwiftUI, Foundation and Charts into an iOS app I'm writing in Swift in Xcode Playgrounds and am getting this error: error: Couldn't look up symbols: protocol witness table for Foundation.Date : Charts.Plottable in Charts the code looks like this in just two example files: file 1, the view import Foundation import SwiftUI import Charts import PlaygroundSupport struct FirstChart_WithDates: View { private let data = ChartDateAndDoubleModel.mockData(months: 3) var body: some View { Chart(data) { item in BarMark( x: .value("Label", item.date, unit: .month), y: .value("Value", item.value) ) } .padding() .aspectRatio(1, contentMode: .fit) .dynamicTypeSize(.accessibility1) ChartDateAndDoubleModelView(data: data) } } struct ChartDateAndDoubleModelView: View { var data: [ChartDateAndDoubleModel] var body: some View { VStack { HeaderRowView(texts: ["date", "value"]) ForEach(data) { datum in HStack { Text(datum.date.formatted(date: .abbreviated, time: .omitted)) .frame(maxWidth: .infinity) // TODO: Format for 2 decimal places. Text(datum.value, format: .number.precision(.fractionLength(2))) .frame(maxWidth: .infinity) } } } .padding(.bottom, 8) .overlay(.quaternary, in: .rect(cornerRadius: 8).stroke()) .padding() } } struct HeaderRowView: View { var texts: [String] var body: some View { HStack(spacing: 2.0) { ForEach(texts, id: \.self) { text in Text(text) .padding(4) .frame(maxWidth: .infinity) .background(.quaternary) } } .font(.headline) .mask(UnevenRoundedRectangle(topLeadingRadius: 8, topTrailingRadius: 8)) } } and file 2, the model: import Foundation import SwiftUI import Charts // ChartDateAndDoubleModel.swift // // // Created by Michael Isbell on 2/10/26. // public struct ChartDateAndDoubleModel: Identifiable { public let id = UUID() public let date: Date public let value: Double } public extension ChartDateAndDoubleModel { static func mockData(months: Int = 5) -> [ChartDateAndDoubleModel] { var data: [ChartDateAndDoubleModel] = [] let calendar = Calendar(identifier: .gregorian) let currentDate = Date() for month in 0..<months { //add month to current date and append to data data.append( ChartDateAndDoubleModel( date: calendar.date(byAdding: .month, value: month, to: currentDate)!, value: Double.random(in: 0...1000) ) ) } return data } }

Since upgrading to a new Mac I have been unable to pair XCode to devices using the Devices and Simulators window. When I press the + button I get 'no devices found'. I have a second Mac which works as expected. When I try 'xcrun devicectl list devices' the phone I've connected shows up with limited information and is 'unavailable'. If I run 'sudo xcrun devicectl list devices' then I get a message telling me not to run xcrun as root but also the full information about the phone as expected, plus it shows the status as 'available (paired)'. So the device seems to be defined with root privileges but XCode is not. I am running XCode 26.2 but this issue has been around since 26.0. Any suggestions welcome.

I'm having troubles converting my string catalog to symbols because for partly translated languages there is no fallback to the reference language. Let me give you an example. Example Assume an app that supports two languages: English and Japanese. The app is very simple and has only two strings, using symbols in a String Catalog: Key: .helloWorld → “Hello World!” Key: .info → “Information” Case 1: No Japanese translations If I launch the app in Japanese and neither string is translated, English is used as a fallback. The UI shows: “Hello World!” “Information” This is exactly what I would expect. Case 2: Only one string translated Now assume I translate only one string into Japanese: .helloWorld → “こんにちは世界” When I launch the app in Japanese now: .helloWorld correctly shows “こんにちは世界” .info shows info, not “Information” So instead of falling back to English, the key is displayed. This issue does not pop up when I don't use symbols. Because then, my SwiftUI Text elements contain the English ideal text as a (kind of) key. I assume for commercial apps all strings are always translated into all supported languages. But this is not the case for apps where translations happens through crowd translations. Check the following link. There you will see that only English (reference language) and German (my native language) are 100% translated. Others will follow over time. https://poeditor.com/join/project/J2Qq2SUzYr For now, I guess I'll have to avoid symbols. Or is there a better way to handle this?

When launching my app (and even a bran new app) on the simulator in debug, the app is installed on the simulator, launched but freezed. Even with a basic hello world app. Any idea?

I am trying to create a .swiftpm for the swift student challenge and the only option that I see in the new menu is playground how do I make the .swiftpm?

I am using the Xcode 26.3 Claude Agent feature. Claude Agent can’t access on my Desktop folder when they are specified as chat attachments because I accidentally denied access to that folder when it was first requested. I had earlier read the Xcode 26.3 release notes, so I was somewhat aware of this known issue, but I didn't make the connection when the Desktop access prompt appeared. I wasn't expecting the permissions prompt, because the regular (non-agent) Xcode Claude is able to freely access Desktop files when they are specified as Xcode coding assistant chat session attachments. Claude Agent isn’t listed in macOS Settings > Privacy & Security > Files and Folders, so I can’t fix the permissions there. The TCC database contains these rows: % sqlite3 ~/Library/Application\ Support/com.apple.TCC/TCC.db \ "SELECT service, client, datetime(last_modified, 'unixepoch', 'localtime') as last_modified FROM access ORDER BY last_modified DESC" | head -2 kTCCServiceSystemPolicyDownloadsFolder|/Users/drew/Library/Developer/Xcode/CodingAssistant/Agents/Versions/26.3/claude|2026-02-07 15:19:25 kTCCServiceSystemPolicyDesktopFolder|/Users/drew/Library/Developer/Xcode/CodingAssistant/Agents/Versions/26.3/claude|2026-02-07 13:38:07 but I can’t seem to reset them using tccutil, apparently because /Users/drew/Library/Developer/Xcode/CodingAssistant/Agents/Versions/26.3/claude is not a valid bundle identifier: % tccutil reset all '/Users/drew/Library/Developer/Xcode/CodingAssistant/Agents/Versions/26.3/claude' tccutil: No such bundle identifier "/Users/drew/Library/Developer/Xcode/CodingAssistant/Agents/Versions/26.3/claude": The operation couldn’t be completed. (OSStatus error -10814.) I would like for Claude Agent to be able to access my Desktop folder. What is an appropriate next step? Thank you for any help you can provide.

Under Xcode -> Settings -> Intelligence -> Account it states "Not Signed In" An anthropic api key or claude.ai account is N/A Is pretty sparse in actual details. https://developer.apple.com/documentation/xcode/setting-up-coding-intelligence Related: https://developer.apple.com/forums/thread/814595

My computer setup is I work from an account with regular (non-admin) privileges. I login into the admin account to install apps, update the OS, that kind of stuff, but work is from the reduced privileges account. And, when in it, I cannot preview swiftUI views in Xcode. Incredibly frustrating, have tried everything including a complete wipeout of the disk and reinstall, but no luck. Don't have any iOS simulator targets installed, it's macOS target I am working on. If I fire up xcode from the admin account it's all good, previes work and so on. Not so in the non-admin account, consistenly getting the "Cannot preview in this file. Failed to launch xxxx" Also tried elevating the privileges of the account to Admin, rebooting, no luck. Tried creating a new account, non-admin or admin, no luck. The detailed error repeats something along the lines of: == PREVIEW UPDATE ERROR: GroupRecordingError Error encountered during update group #3 ================================== | FailedToLaunchAppError: Failed to launch GIIK.Mesh-One | | /Volumes/Glyph 2TB/Developer/M4Book/Mesh One/DerivedData/Mesh One/Build/Products/Debug/Mesh One.app | | ================================== | | | [Remote] JITError | | | | ================================== | | | | | [Remote] XOJITError | | | | | | XOJITError: Could not create code file directory for session: Permission denied Most telling is the double space between directory and for on the last error line, it sounds like a failed string interpolation because the directory name was nil or empty? This is very frustrating (I also filed FB21900410). Am I missing something obvious? I also dumped the build settings and diffed the admin and non-admin accounts and they are an exact match (save for the path names). There has to be something that's preventing the non-admin accounts from previewing, anyone know what it might be/where to look? Cheers,

Dear Friends, Is there a way to increase font size of xcode intelligence window? So the text i write, and the AI response. Why do i need this? I am using 4K monitor and i dont want to make Display setting bigger and lose all screen space.

I’m trying to use MCP servers with Xcode 26.3 Coding Intelligence (Codex agent). With a project-scoped config file at /.codex/config.toml, MCP servers are not reliably loaded. /.codex/config.toml Example: [mcp_servers.Notion] url = "https://mcp.notion.com/mcp" enabled = true [mcp_servers.XcodeBuildMCP] command = "/bin/zsh" args = ["-lc", "/opt/homebrew/bin/npx -y xcodebuildmcp@beta mcp"] enabled = true tool_timeout_sec = 10000 Expected: Xcode consistently loads MCP servers defined in /.codex/config.toml across restarts. Actual: Xcode often only exposes xcode-tools. In some sessions MCP servers appear, but after restarting Xcode they may disappear. The global file at ~/Library/Developer/Xcode/CodingAssistant/codex/config.toml also seems managed/rewritten by Xcode and isn’t reliable for custom MCP servers. Questions Is /.codex/config.toml the official/supported way to configure MCP servers for Codex in Xcode right now? Are there any requirements for Xcode to load it (e.g. workspace must be Trusted, open .xcworkspace vs .xcodeproj, full restart/force quit, etc.)? Is there any logging/diagnostics to understand why the MCP server is not starting or not being picked up?

Xcode 16 and 26 changes in painful way how the Tab key works during autocomplete. Previously, pressing Tab would extend the typed text up to the word match. For example, we have two classes: NSViewController and NSViewCoordinator BEFORE, typing: "NSV" + Tab used to complete to NSViewCo Now, in Xcode 26, pressing Tab just use the first suggestion. Stupidly. Especially when you want DispatchQueue and it gaves you DispatchSemaphore… That is very inconvenient because very often I want just see all possible cases with some prefix...without need of typing all prefix manually. How to restore the previous behavior? How to do autocomplete word-by-word?

I have configured Xcode 26.3RC to utilize Claude and Claude Agent. However, it does not seem to access Claude's config.json where I supply information for the MCP servers that I use with Claude. If I manually tell Xcode to look in the config file it finds the appropriate API keys, but that's not really a usable experience.

Hello, developers! Xcode 26.3 unlocks the power of agentic coding! Get ready to explore new features that released last Tuesday. If you haven't already, you can download Xcode 26.3 from the Apple Developer Downloads page Check out the official documentation for getting started and how to configure agents in Xcode: ‎ Writing code with intelligence in Xcode Generate code, fix bugs fast, and learn as you go with intelligence built directly into Xcode https://developer.apple.com/documentation/xcode/writing-code-with-intelligence-in-xcode/ ‎ Setting up coding intelligence Enable third-party coding tools that you want to use in the coding assistant https://developer.apple.com/documentation/xcode/setting-up-coding-intelligence ‎ Giving external agentic coding tools access to Xcode Let agentic coding tools access your project and Xcode capabilities using the Model Context Protocol https://developer.apple.com/documentation/xcode/giving-agentic-coding-tools-access-to-xcode ‎ Code-along: Experiment with coding intelligence in Xcode 26 Presented live at a Meet with Apple event: Learn how coding intelligence features can help you write code and fix errors with example prompts and resources. ‎ ‎We are also introducing a new tag to the forums Coding intelligence ✨. Use this tag when discussing these new features to increase visibility on the forums to help others chime in.

I started a project targeting macOS and used Storyboard app lifecycle. I also used Xcode Previews in this project. If I: Keep the entry point of the main storyboard to a window controller. (as default setup in macOS), Turn the Xcode window into full-screen, That window controller would pop up its window every time Xcode Previews refreshes. I tested in Xcode 26.3 RC and many versions before.

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