How can I enable an external display in the Device Hub via Xcode 27, similar to the external display option previously available in the Simulator?

Hello, I have been unable to install any development-signed app on any physical device for five months. Builds succeed, code signing passes locally, but every device rejects the app at install time with: Failed to verify code signature of .../extracted/MyApp.app : 0xe8008018 (The identity used to sign the executable is no longer valid.) ApplicationVerificationFailed The app installs briefly, then iOS immediately removes it. This started right after my account (Team ID MB4DXDTDMT) was reinstated following a duplicate-account flag. Background: I had a personal account that was converted to a business account (Wakeout LLC), then created a new personal account, which Apple flagged as a duplicate and later reinstated. The signing failure began immediately after that reinstatement. Isolation already done (this is not a local-setup problem) I have run the full isolation sequence — including every step DTS typically asks for — and the result points squarely at the account/team, not my machine: New blank Xcode project, automatic signing, new bundle ID → same 0xe8008018. Brand-new macOS user account → same failure. Multiple Macs, fresh Xcode installs → same failure. Multiple iOS devices (iPhone 17 Pro, iPhone 15 Pro, others) → same failure. Different Apple ID / different developer team on the same Mac + same device → installs fine. This is the decisive one: the local environment is healthy; only Team MB4DXDTDMT is rejected. Xcode Cloud builds for this same team install fine. Apple's cloud signing trusts MB4DXDTDMT; the device-verification backend does not. That gap can only exist server-side. I have also: revoked/regenerated all certificates multiple times, deleted/recreated all provisioning profiles, cleared ~/Library/MobileDevice/Provisioning Profiles, cleared DerivedData and CoreDevice, removed device pairing records, re-paired devices, confirmed Developer Mode and correct system time. Simulators work. codesign --verify --deep --strict passes. Profile certificate SHA-1 matches the signing cert exactly. Entitlements match. Why I'm posting here This is the same failure documented in thread 755762, where Quinn concluded: "this seems to be tied to your primary developer account and only DevPrograms has access to those details." That matches my evidence exactly: the problem isolates cleanly to one team, and only DevPrograms can see the account-side state. I've already gone through Developer Support on this — an open case has been with them for about five months without a resolution, which is what convinced me the fix isn't something I can reach from the support side. I'm posting here in case a DTS engineer can confirm the diagnosis and point me to the right path. Question for any DTS engineer: given that the failure isolates to a single team — different teams sign and install fine on the same Mac and same device, and Xcode Cloud builds for this same team install fine — can you confirm this is an account-side signing-trust state that has to be reset by Apple, and what's the most direct way to get that reset actioned? Happy to attach a sysdiagnose, full console output, or codesign -dvvv dumps on request. Thank you.

Hello, I am looking for guidance on how to pre-provision TCC permissions for automated desktop app testing on the macOS 27 beta. We have maintained a CI testing setup by saving snapshots of VMs with pre-configured user TCC databases. This allowed our UI tests to run without being blocked by permission prompts. This included permissions like screen recording, full disk access or apple events. On the macOS 27 beta, this workflow appears completely broken. While the system TCC database seems to function as it used to, the user TCC database has been moved into a ProtectedSystem container. Direct modifications to the user database now seem impossible. Is there any officially supported way to pre-provision user-level TCC permissions on macOS 27 VMs for automated CI environments? Is Apple's intention here that the system DB is the only one that's actually editable (with SIP disabled)? How does Apple recommend CI platforms handle user-level permission prompts in headless or automated VM environments moving forward? Any insights or recommended alternative workflows would be greatly appreciated. Thank you!

A couple months ago, I got an error when attempting to deploy our app to App Store Connect (see error further below). I used the CLI command xcrun altool --upload-app, and I was trying to upload a new version 1.0.26 build 0, when the previous uploaded version was 1.0.25 build 2 (so the new version is definitely a higher number). I later tried to upload a version 1.0.27 build 1, and that still failed. Note that I have an identical staging app, and I was able to go from 1.0.25 build 2 to 1.0.26 build 0 just fine there. And I have never had issues with version incrementation in the past for either our production or staging app. What could be going wrong here? Here are the error logs: 2026-04-30 23:18:19.430 ERROR: [ContentDelivery.Uploader.6000012404C0] The provided entity includes an attribute with a value that has already been used (-19232) The bundle version must be higher than the previously uploaded version: ‘0’. (ID: 71a9077b-807a-476c-b8a2-04cb8357bc32) NSUnderlyingError : The provided entity includes an attribute with a value that has already been used (-19241) The bundle version must be higher than the previously uploaded version. status : 409 detail : The bundle version must be higher than the previously uploaded version. Failed to upload archive at '[MyApp].ipa'. source : pointer : /data/attributes/cfBundleVersion id : 71a9077b-807a-476c-b8a2-04cb8357bc32 code : ENTITY_ERROR.ATTRIBUTE.INVALID.DUPLICATE title : The provided entity includes an attribute with a value that has already been used meta : previousBundleVersion : 0 previousBundleVersion : 0 iris-code : ENTITY_ERROR.ATTRIBUTE.INVALID.DUPLICATE 2026-04-30 23:18:19.431 ERROR: [altool.6000012404C0] Failed to upload package. 2026-04-30 23:18:19.431 ERROR: [altool.6000012404C0] The provided entity includes an attribute with a value that has already been used (-19232) The bundle version must be higher than the previously uploaded version: ‘0’. (ID: 71a9077b-807a-476c-b8a2-04cb8357bc32) NSUnderlyingError : The provided entity includes an attribute with a value that has already been used (-19241) The bundle version must be higher than the previously uploaded version. status : 409 detail : The bundle version must be higher than the previously uploaded version. source : pointer : /data/attributes/cfBundleVersion id : 71a9077b-807a-476c-b8a2-04cb8357bc32 code : ENTITY_ERROR.ATTRIBUTE.INVALID.DUPLICATE title : The provided entity includes an attribute with a value that has already been used meta : previousBundleVersion : 0 previousBundleVersion : 0 iris-code : ENTITY_ERROR.ATTRIBUTE.INVALID.DUPLICATE

Summary: After upgrading to Xcode 26.4, app-hosted XCTest execution on physical devices running iOS 16 fails at test-planning time with "Logic Testing Unavailable." The same project and same device work under Xcode 26.2. The failure reproduces with a standalone minimal Xcode project, which suggests this is an Xcode regression rather than a project-configuration issue. Environment: Xcode: 26.4 (17E192) macOS: Tahoe 26.4 Failing device: iPhone 11 (iPhone12,1), iOS 16.0.3 Working comparisons: Xcode 26.2 + same iPhone 11 (iOS 16.0.3): works Xcode 26.4 + iPad Pro 11-inch (4th generation) on iOS 26.3: works Regression: Yes. Works on Xcode 26.2. Fails on Xcode 26.4. Same project, same signing setup, same physical iOS 16 device. Minimal reproduction: A minimal sample project with: one iOS app target one app-hosted unit-test target one UI-test target (for comparison; not required to reproduce) Steps for the unit-test repro on a physical device running iOS 16: Build for testing: xcodebuild -project TestProject.xcodeproj \ -scheme TestProject-UnitTests \ -sdk iphoneos \ -destination 'platform=iOS,id=<DEVICE_UDID>' \ -derivedDataPath DerivedData-Device-Unit \ -resultBundlePath Results-Device-Unit-Build.xcresult \ DEVELOPMENT_TEAM=<TEAM_ID> \ CODE_SIGN_STYLE=Automatic \ build-for-testing Run tests without building: xcodebuild -project TestProject.xcodeproj \ -scheme TestProject-UnitTests \ -sdk iphoneos \ -destination 'platform=iOS,id=<DEVICE_UDID>' \ -derivedDataPath DerivedData-Device-Unit \ -resultBundlePath Results-Device-Unit-Test.xcresult \ DEVELOPMENT_TEAM=<TEAM_ID> \ CODE_SIGN_STYLE=Automatic \ test-without-building Note: xcodebuild test (combined build and test) also fails with the same error. Expected result: The hosted unit tests run successfully on the connected physical device, as they do under Xcode 26.2. Actual result: Step 1 (build-for-testing) succeeds. Step 2 (test-without-building) fails immediately (within ~1 second) with: 2026-03-26 11:23:28.683 xcodebuild[51930:731004] DVTDeviceOperation: Encountered a build number "" that is incompatible with DVTBuildVersion. 2026-03-26 11:23:28.725 xcodebuild[51930:730966] [MT] DVTDeviceOperation: Encountered a build number "" that is incompatible with DVTBuildVersion. 2026-03-26 11:23:29.239 xcodebuild[51930:730966] Writing error result bundle to /var/folders/jl/knmkq18x4cg_3w087zgpfldm0000gn/T/ResultBundle_2026-26-03_11-23-0029.xcresult xcodebuild: error: Failed to build project TestProject with scheme TestProject-UnitTests.: Cannot test target “redacted” on “redacted”: Logic Testing Unavailable Logic Testing on iOS devices is not supported. You can run logic tests on the Simulator. Why this looks like an Xcode regression: The same project and same physical iOS 16.0.3 device work under Xcode 26.2. Under Xcode 26.4, build-for-testing still succeeds, so signing, provisioning, and bundle construction appear valid. The failure happens only when Xcode plans or launches the on-device test run. Before the failure, Xcode 26.4 logs: DVTDeviceOperation: Encountered a build number "" that is incompatible with DVTBuildVersion. A newer physical device running iOS 26.3 works under Xcode 26.4 without this warning. The issue also reproduces with a minimal standalone Xcode project, which makes a project-specific configuration problem unlikely. The Xcode-generated .xctestrun files for the passing Xcode 26.2 case and failing Xcode 26.4 case are structurally equivalent, making an .xctestrun format difference unlikely to be the cause.

Hello! I have windows pc and an iphone, I want to develop apps and use xcode... Please help me on that and what should I doThank YOU !

Overview On Xcode 27, when trying to run on a specific destination, the option to “Clear Recent” is missing. This was available in Xcode 26. Manage Devices option exists, but this is to permanently add / remove destinations, this is different from “Clear Recent”. Please bring back “Clear Recent” (from Xcode 26 to Xcode 27) option to Xcode as it is very useful Environment: macOS 26.5.1 (25F80) Xcode 27.0 beta (27A5194q) Feedback FB23055381

Filed a feature request in feedback assistant, but starting a discussion here as well since I'm probably not the only one. The issue I have is that coding assistant and previews seem to be mutually exclusive. That means that when I'm iterating on UI, I either have to rely on the coding assistant showing me preview screenshots (cannot interact), firing up Device Hub (have to manually kick off a build after each change) or manually opening the associated preview (requires a lot of hoping back and forth). This feels inefficient and means I have to hop around and manage my windows and tabs more. A slight work around is to open a split view with the file and preview there. This layout is inefficient and clunky. I would love if Xcode supported a pinned preview next to coding assistant (or automatically showed the relevant one). I imagine this working just like showing a preview next to a file cmd + opt + return hides/shows the preview. FB23219611

Reality Composer Pro 3 Assistant appears to have useful project-aware tool categories for working with scenes, assets, materials, animation, behavior trees, navigation, skeletons, audio, planning, documentation, and ShaderGraph material creation. It would be very helpful if a supported subset of these capabilities could be exposed to external developer tools through an Apple-provided MCP server, command-line tool, or similar local automation interface. Similar to what's possible with Xcode: https://developer.apple.com/documentation/Xcode/giving-external-agents-access-to-xcode Possible exposed capabilities could include: Querying and modifying scene hierarchy, entities, and components. Inspecting and managing project assets and structure. Working with materials and ShaderGraph/SSL material creation. Reading and editing animation libraries, timelines, skeletons, and rigs. Inspecting behavior trees and navigation data. Reading audio components and playback settings. Querying Reality Composer Pro documentation through the Assistant. Returning structured JSON responses for external tools. Letting external coding agents request project-aware plans or safe editor actions. Expected Result: Reality Composer Pro provides a documented, permission-aware MCP server, CLI, or similar interface that allows external developer tools to safely use supported Assistant/project capabilities. Actual Result: Reality Composer Pro Assistant is available only inside the app UI. External coding agents such as Codex or Claude Code cannot reliably inspect or automate Reality Composer Pro projects except through unsupported package/file manipulation. Why This Matters: Many developers now use coding agents alongside Xcode and Reality Composer Pro. A supported interface would make app development smoother by allowing those tools to coordinate Swift code, RealityKit assets, scene state, materials, animations, and Assistant workflows through an official integration point. Feedback ticket: FB23276072

First of all: I love the Xcode implementation of agents. Even right out the gate it works really well on regular projects. However it's rough around the edges--it's beta 1 after all, and I've been prodding around the permissions section. My configuration: macOS 26.5.1, Gemini 3.1 Pro agent via Gemini Enterprise Agent Platform Things were working fine until I got nervous about the agent downloading things using google_web_search and web_fetch since I expected the agent to do that in the cloud but apparently it's automatically downloading stuff to my device, so I disabled those tools out of caution. Later I stumbled upon the skills documents in /Users/USERNAME/Library/Developer/Xcode/CodingAssistant/gemini/.gemini/GEMINI.md which basically tells the agent to: ...take special care to avoid using command line tools like ls or find just to learn basic information about the project or its contents. The user may be prompted to approve every single one of those command line invocations, so it's best to use them sparingly. So I said "Why not?" and deleted the rest of the permissions for better security--you never know what a beta 1 agent might do, and the text implies the worst that'll happen is they'll ask for permission. Now my agent permissions page is empty. After I did that I noticed my agent no longer works in the library project I've been working on. It can't read project files at all, even though things were fine before. Strangely, the agent works just fine in a regular app project--it's just acting up in the library project. Here's a sample of the verbose output: Thinking: I'm currently examining the workspace path provided, which appears to differ slightly from the actual file structure I'm encountering within the PROJECTNAME directory. I'm trying to reconcile this discrepancy. I've realized the paths provided are Xcode workspace-relative and require specific Xcode tools for interaction. I was attempting direct file system access, which is incorrect. I will now attempt to use the appropriate mcp_xcode-tools commands, similar to how I successfully used XcodeLS earlier, to access these files within the project context. I attempted to use mcp_xcode-tools_XcodeRead, but it wasn't recognized. It seems the Xcode tools are not available in my current Plan Mode environment, which is perplexing given previous successful usage. I need to investigate this discrepancy further. AgentLS: The tool failed with no output. Thinking: I'm currently examining the contents of the /Users/USERNAME/Documents/PROJECTNAME/.swiftpm/xcode directory to understand the project structure. OBJECTNAME: 0 items Thinking: I'm currently trying to figure out the best way to access the swift-markdown and MarkdownView source files. It seems they're presented as workspace-relative paths, so I'll need to use the Xcode-specific tools like XcodeRead and XcodeGrep to interact with them. I'm trying to ascertain the precise names of the swift-markdown and MarkdownView source files, as they appear to be workspace-relative. I'm considering invoking the generalist agent, as the mcp_xcode-tools_XcodeRead tool might not be directly available to me at this level, and I need to confirm its accessibility. Note how it successfully used XcodeLS earlier but is now failing. Even if ls is allowed, it still fails. Reinstalling doesn't fix the issue, so I'm stuck without agent support for this library project. Other issues I've noticed Rolling back agent-made changes is painful, slow, and expensive when it really shouldn't be (just undo what was done instead of telling the agent to undo) Agent made changes are often not given rainbow highlights as they should Artifacts don't always show up Please don't make me manually toggle "verbose" every time I open a conversation. If it's not already obvious, I just like verbosity. I'd love to learn more about the Xcode agent tools available to the agent but there seems to be a lack of documentation anywhere. I've been resorting to extracting stuff from /Users/USERNAME/Library/Developer/Xcode/CodingAssistant/gemini/.gemini/ but those are skills, not tools. Still, it's a fantastic resource for a budding developer! I tried to repopulate my agent command permissions to see if that's the cause, but aside from ls, head, tail, grep, pwd, I don't know what else belongs there and reinstalling doesn't repopulate it. There's also no reset button.

I had recently updated my mac to beta 27.0, but regular Xcode isn't supported on this beta version. So, I downloaded Xcode Beta from Apple Developer. Now when I'm trying to deploy an app for AppStore review, it is prompting me that beta builds can't upload an app. Is there any fix that I can again use normal Xcode in my mac ?

I am building an interactive application. My application architecture looks like this: There will be a LoaderBinary that will load 1 or more shared libraries (.framework in this case). This is also where the entry point from an OS perspective lies. There will be 1 or more frameworks built. This framework is expected to have large part of my logic as shared code so that multiple flows like the application flow, widget, notifications etc can reuse code by loading this framework itself. Now, I want to achieve the following: Building a framework independently - I believe this is doable and works fine too. Building a mach-o binary - This is what we are not clear if it is allowed or not to build just a mach-o binary ? Yes, there is an option to build a command-line tool but as this is an interactive binary, what should be the path to take ? Building a macOS bundle (.app) using 1 and 2 - Now, as I have a PRE-BUILT framework and a PRE-BUILT mach-o binary, can I create a application bundle using these ? Some directions here will help to take this forward - in alignment with both my architecture as well as how Apple Build system works. Thanks!

I’m blocked debugging a watchOS app on a physical Apple Watch. The iPhone connects to Xcode normally (wired), but the Watch either fails to connect with a tunnel timeout or disappears entirely from Xcode after I unpaired it inside Devices & Simulators. Environment Mac: macOS 26.x (Apple Silicon Mac) Xcode: 26.2 iPhone: iOS 26.1 Apple Watch Ultra: watchOS 26.2 (build 23S303) Connection: iPhone connected to Mac via USB (trusted). Watch paired to iPhone and working normally in the Watch app. Issue A (when Watch is visible in Xcode) In Xcode → Window → Devices and Simulators, the Watch shows up but is not usable and fails to connect. Error: “Previous preparation error: A connection to this device could not be established.” “Timed out while attempting to establish tunnel using negotiated network parameters.” In some attempts the Watch shows “Capacity: Unknown” / limited details, and then fails during preparation. Issue B (after unpairing Watch in Xcode only) I unpaired/removed the Watch in Xcode (Devices & Simulators). I did not unpair the Watch from the iPhone. Now: iPhone appears in Xcode and works normally for builds. Watch is still paired to the iPhone and works normally. Watch no longer appears anywhere in Xcode Devices & Simulators (no paired watch section, no watch run destination). What I’ve tried Reboots of Mac, iPhone, Watch (multiple times) Watch unlocked, awake; iPhone unlocked and close to Watch Verified Watch is paired and connected in iPhone Watch app Developer Mode enabled on iPhone and Watch Wi-Fi and Bluetooth ON (Mac/iPhone/Watch), tried toggling both Tried on home Wi-Fi and also with iPhone hotspot (same result) Resetting trust prompts / reconnecting iPhone via USB, re-trusting Mac Apple Watch: “Clear Trusted Computers” Xcode: removing/re-adding devices; clearing derived data; restarting Xcode Watch Developer networking test: Responsiveness = Medium (430 RPM) Questions 1. Is this a known issue/regression with Xcode 26.2 + watchOS 26.2 tunneling (CoreDevice / devicectl)? 2. Is there an Apple-supported way to force Xcode to re-discover a paired Watch after it was removed from Xcode Devices & Simulators (without unpairing the Watch from the iPhone)? 3. Any recommended logs or diagnostic steps I should collect (Console logs, sysdiagnose, specific Xcode/CoreDevice logs) to include in a Feedback report? If helpful, I can provide the full error text from Xcode’s Devices window and any logs you recommend. Thank you in advance,

When building our project for Mac Catalyst with Xcode 26.2, we get this warning almost a hundred times, once for every object file: directory not found for option '-L/var/run/com.apple.security.cryptexd/mnt/com.apple.MobileAsset.MetalToolchain-v17.3.48.0.UZtKea/Metal.xctoolchain/usr/lib/swift/maccatalyst' Somehow, every Link <FileName>.o build step got the following parameter, regardless if the target contained Metal files or not: -L/var/run/com.apple.security.cryptexd/mnt/com.apple.MobileAsset.MetalToolchain-v17.3.48.0.UZtKea/Metal.xctoolchain/usr/lib/swift/maccatalyst The toolchain is mounted at this point, but the directory usr/lib/swift/maccatalyst doesn't exist. When building the project for iOS, the option doesn't exist and the warning is not shown. We already check the build settings, but we couldn't find a reason why the linker is trying to link against the toolchain here. Even for targets that do contain Metal files, we get the following linker warning: search path '/var/run/com.apple.security.cryptexd/mnt/com.apple.MobileAsset.MetalToolchain-v17.3.48.0.UZtKea/Metal.xctoolchain/usr/lib/swift/maccatalyst' not found Is this a known issue? Is there a way to get rid of these warnings?

Hi, whenever I build my app to a simulator it launched device hub but then nothing, makes my Mac extremely hot and cause fans to engage all for nothing. Is it because I'm still on MacOS 26.5.1? Just seems like device hub is broken for me I can only launch testing on physical devices.

Has anyone managed to get Copilot working using the new ACP integration in Xcode 26.6 and Xcode 27 beta? I have tried setting it up using the path to the copilot binary as instructed and the flags --acp --stdio but Xcode just displays a "Your request couldn't be completed" error: JSON-RPC global stream failed: The operation couldn’t be completed. (IDEIntelligenceProtocol.JSONRPCElement.Error error 1.) I am running the latest version of copilot cli and it works in many other IDEs.

It seems this method is not updated for the new "Show on all Spaces" option in system wallpaper preferences. I encounter this problem because one customer reported that every time my app sets a new wallpaper, this option is turned off. NSDictionary* options = [SHARED_WORKSPACE desktopImageOptionsForScreen:screen]; [SHARED_WORKSPACE setDesktopImageURL:imageFileURL forScreen:screen options:options error:&error]; This can be easily verified by dumping the returned dictionary - which only contains 3 keys. Is this a known bug?

Mac Pro 2019, Tahoe 26.3, Xcode 26.2 Mac Mini 2023 M2, Tahoe 26.3, Xcode 26.2 On Mac Pro 2019 the app is only Intel while on Mac Mini 2023 M2 it is ARM64 only. Both have Standard Architectures (Apple Silicon, Intel). Both have Build Active Architecture Only is set to No (Debug + Release). Happen for default new projet macOS -> App and Obj-C, Xib. No change to defaults setting except uncheck "Automaticaly manage signing" and "Signing Certificate" set to "Sign to Run Locally" HOWEVER On Mac Pro 2019, BigSur 11.7.10, Xcode 14.10 the application is build Universal ! Why cannot build universal with Tahoe 26.3, Xcode 26.2 ? Can I submit a Mac applcation to App Store Connect with BigSur 11.7.10, Xcode 14.10 ? What are the minimal version of Mac Os and Xcode to submit a Mac applcation to App Store Connect ?

I find the inspector, file navigator, issue navigator, etc. all hard to read. Is there a way to increase the size of these texts without changing all of the text on my machine?

Hello, I’ve been experiencing a persistent issue in Xcode since version 26.0, and it is still present in 26.2. When using the split view to display two files side by side, the area in the top‑right corner of the window (the inspector / options panel) starts flickering continuously. This happens regardless of whether I’m using the light or dark theme, and even with the Liquid Glass effect disabled in macOS settings. None of these changes have any impact on the issue. I have already submitted a bug report through Xcode (Feedback Assistant), but the issue is still present as of today. The flickering makes the interface difficult to use and visually very distracting. I’ve attached a video to clearly show the issue. I will review the attachment at the time I publish this post. Thanks in advance for any help or feedback. Video 1 https://www.icloud.com/iclouddrive/077l-R7Ybvxz89NI-B7DliEuA#xcode_bug1 Video 2 https://www.icloud.com/iclouddrive/0f6bJp48ioGRdkYiA2U4sI-cg#xcode-bug2