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“Visual Studio Maui IOS”

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SwiftUI Instruments tool error: "Time Profiler: Time Profiler does not support the iOS platform"
I am trying to run the SwiftUI instruments tool for an iOS app and every time I run it, it either switches from giving me the Time Profiler: Time Profiler does not support the iOS platform error, or I end up with no data at all; however, when I run just the Time Profiler by itself it works fine. I am running this on a physical device
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"Unable to verify app" cannot verify trust of developer
I've seen a couple posts on reddit today but wanted to call out here because I think it may be a more widespread issue - I keep getting an error trying to open my iOS app saying Unable to verify app - An internet connection is required to verify trust of the developer.... I have never gotten this issue before and did not change anything in my build settings from my last successful build of the app to now. The directions it gives me are to go to Settings > General > VPN and Device Management and trust my developer certificate from there, but that doesn't work either. The first time I tried this, the developer certificate wasn't there at all, then I looked at Reddit and saw people recommending to download the developer certificate to solve the issue, but doing this did not fix the error either. Just looking to see if anyone else has encountered this or what the fix might be.
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Verify App Process Never Verifies
I have an iOS app that I want to run on my device via Xcode and the USB-C cable. Once I run it through Xcode with my device as the target the app builds on device. But then I get an error message stating I need to Verify App via the Settings section VPN & Device Management I click on my account under Developer App and I trust my developer account. Then I am asked to Verify App And when I do so I can a spinning icon that spins for a minute. Spinning Icon stops and I still cant use the app. I have tried a couple of different things in particular Here is the Xcode error output : Domain: IDELaunchCoreDevice Code: 0 Recovery Suggestion: Verify that the Developer App certificate for your account is trusted on your device. Open Settings on the device and navigate to General -> VPN & Device Management, then select your Developer App certificate to trust it. User Info: { DVTErrorCreationDateKey = 2026-03-10 21:02:06 +0000; IDERunOperationFailingWorker = IDELaunchCoreDeviceWorker; } -- The applicati
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Reply to Questions about VoIP Push compliance rules and CallKit handling
If I display CallKit immediately after receiving the callback, and then the function returns, but the call ends within 7 seconds, will the second check be considered a misuse? No. The second check is actually validating whether a call has been reported, not whether it's still active. I'll also say that both of the checks here are designed to be more generous than the API contract specifically requires, just to minimize the possibility of any incorrect termination. There were a small number of issues [1] with this code several years ago, but I haven't seen any problems with it since. [1] All of the issues tended to involve fairly odd edge cases/circumstances. For example, there was an issue (fixed in iOS 14) with the exact timing of the secondary check where JUST the right timing between an incoming push and reporting/ending your call could cause the app to crash. Triggering this bug required continually repeating the push -> report call -> end call cycle at a cadence of ~7s for several hours. T
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Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
App installs but won’t launch on iPhone: “profile has not been explicitly trusted by the user” My app builds and installs on a physical iPhone, but it will not launch. Setup: Flutter 3.38.7 Xcode 26.3 iPhone 15 Pro Max iOS 26.3.1 Exact error: ERROR: The application failed to launch. (com.apple.dt.CoreDeviceError error 10002) Unable to launch com.sherpa-map.routestudio because it has an invalid code signature, inadequate entitlements or its profile has not been explicitly trusted by the user. (FBSOpenApplicationErrorDomain error 3) The confusing part is that on the iPhone, Settings > General > VPN & Device Management only shows VPN and Sign in to work or school account, so there is no obvious developer trust option to tap. Is this a current iOS/Xcode issue, or is there a new trust flow for developer-signed apps?
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Latest Beta Version Breaks Xcode Testing Builds on Physical devices.
This is a grave issue I am facing while testing my apps on my personal device. This is the error I seem to be getting: The application could not be launched because the Developer App Certificate is not trusted. And on the phone side, this is the message: Unable to Verify App. An internet connection is required to verify the trust of the developer Apple Development... Before I receive any recommendations, such as deleting Xcode or restarting my device, I would like to clarify that I have already taken all necessary precautions. The application I was testing appeared to function correctly in the morning a few hours prior to the update. However, after upgrading to the latest beta builds, iOS 26.4 beta and the latest macOS beta, this issue has become a recurring problem. I would greatly appreciate your assistance in resolving this matter, as it is of utmost importance to me.
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Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
same thing here. here is what I have tried: Tested on iPhone on both Wi‑Fi and cellular: same failure. -Checked iPhone Settings → General → VPN & Device Management: no developer cert/profile shown to “trust”. Regenerated signing in EAS: Ran eas credentials -p ios (logged into Apple Developer team) Deleted/revoked the existing Apple Distribution certificate Let EAS generate a new Distribution certificate and new Ad Hoc provisioning profile including the iPhone UDID. Rebuilt multiple times after credential reset: Verified the iPhone UDID was included in the ad-hoc profile by re-selecting devices Ran eas device:create (Website flow) Rebuilt and chose “No, let me choose devices again”, selected the target iPhone. Checked Apple verification endpoint reachability from iPhone: https://ppq.apple.com intermittently returned 502 Bad Gateway, later returned ok. Checked EAS build list and ensured installing the latest build ID from March 10, 2026 (not older IPAs signed with the revoked cert). Noted possible
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Reply to NSFileManager getRelationship:ofDirectoryAtURL:toItemAtURL:error: returning NSURLRelationshipSame for Different Directories
Perhaps I didn't explain myself well. I wasn't making assumptions about how the the APIs operate - the only thing I was claiming (well trying to) was that paths provide the concept of file location and in certain contexts that concept matters to GUI apps (with the NSBrowser example being an obvious one). Sure. And, to be clear, I don't mean that paths don't EVER have a place and/or aren't a good solution. However, I do think those use case are more limited then they seem and that most interactions with files are better handled through object references (which are tied to a specific file system object), NOT paths (which describe a location in the hierarchy). Our APIs don't do a very good job of expressing that idea, but APIs like reference URLs and bookmarks are actually object reference APIs, not just weird ways of storing paths. Very interesting. Yeah I use that (watch root) With the watch root flag set it does seem to just track whatever is at the path. Ahh... Yes, you're right. It's been awhile since I loo
Topic: App & System Services SubTopic: Core OS Tags:
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Orphaned XCode simulator disk images
Recently I noticed that although my drive showed ~800Gb of usage, the folders within totally to around ~600Gb (and yes I was including hidden 'dot' files/folders. After some inspection I found that there are a whole set of Disk Media Images, that appear to be related to XCode simulators. Here's an extract from the command line diskutil list command: /dev/disk5 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +17.6 GB disk5 Physical Store disk4s1 1: APFS Volume iOS 26.2 Simulator 17.1 GB disk5s1 /dev/disk6 (disk image): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme +14.2 GB disk6 1: Apple_APFS Container disk7 14.2 GB disk6s1 /dev/disk7 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +14.2 GB disk7 Physical Store disk6s1 1: APFS Volume XROS 26.2 Simulator 13.8 GB disk7s1 /dev/disk8 (disk image): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme +17.2 GB disk8 1: Apple_APFS Container disk9 17.2 GB disk8s1 /dev/disk9 (synthesized): #: TYPE NAME SIZ
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Reply to Inquiry Regarding Differences in App Store Server Notifications (V2) Behavior for Monthly and Annual Plans
There is no difference in behaviour. Please send us the transaction ID of the two transactions via a feedback assistant ticket to investigate further. Thank you How to File Feedback assistant ticket? https://feedbackassistant.apple.com/ Login with your developer account, Choose iOS & iPadOS” Choose AppStore “Incorrect & Unexpected behavior Input the issue description and title. Upload attachements Click “Submit” Copy the Ticket ID “FBxxxxxxx” and let us know.
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SwiftUI Instruments tool error: "Time Profiler: Time Profiler does not support the iOS platform"
I am trying to run the SwiftUI instruments tool for an iOS app and every time I run it, it either switches from giving me the Time Profiler: Time Profiler does not support the iOS platform error, or I end up with no data at all; however, when I run just the Time Profiler by itself it works fine. I am running this on a physical device
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3w
Reply to iPhone 17 Pro on iOS 26.3 stays unavailable in xcrun devicectl list devices even with Xcode 26.4 beta 2
Thanks. I’ll collect the Core Device logs from both macOS and iOS, file a Feedback Assistant report with the attached logs, and post the FB number here once submitted.
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Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
The same issue. Developer Mode is on but not working iOS 26.3.1.
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"Unable to verify app" cannot verify trust of developer
I've seen a couple posts on reddit today but wanted to call out here because I think it may be a more widespread issue - I keep getting an error trying to open my iOS app saying Unable to verify app - An internet connection is required to verify trust of the developer.... I have never gotten this issue before and did not change anything in my build settings from my last successful build of the app to now. The directions it gives me are to go to Settings > General > VPN and Device Management and trust my developer certificate from there, but that doesn't work either. The first time I tried this, the developer certificate wasn't there at all, then I looked at Reddit and saw people recommending to download the developer certificate to solve the issue, but doing this did not fix the error either. Just looking to see if anyone else has encountered this or what the fix might be.
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147
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3w
Verify App Process Never Verifies
I have an iOS app that I want to run on my device via Xcode and the USB-C cable. Once I run it through Xcode with my device as the target the app builds on device. But then I get an error message stating I need to Verify App via the Settings section VPN & Device Management I click on my account under Developer App and I trust my developer account. Then I am asked to Verify App And when I do so I can a spinning icon that spins for a minute. Spinning Icon stops and I still cant use the app. I have tried a couple of different things in particular Here is the Xcode error output : Domain: IDELaunchCoreDevice Code: 0 Recovery Suggestion: Verify that the Developer App certificate for your account is trusted on your device. Open Settings on the device and navigate to General -> VPN & Device Management, then select your Developer App certificate to trust it. User Info: { DVTErrorCreationDateKey = 2026-03-10 21:02:06 +0000; IDERunOperationFailingWorker = IDELaunchCoreDeviceWorker; } -- The applicati
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66
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3w
Reply to Questions about VoIP Push compliance rules and CallKit handling
If I display CallKit immediately after receiving the callback, and then the function returns, but the call ends within 7 seconds, will the second check be considered a misuse? No. The second check is actually validating whether a call has been reported, not whether it's still active. I'll also say that both of the checks here are designed to be more generous than the API contract specifically requires, just to minimize the possibility of any incorrect termination. There were a small number of issues [1] with this code several years ago, but I haven't seen any problems with it since. [1] All of the issues tended to involve fairly odd edge cases/circumstances. For example, there was an issue (fixed in iOS 14) with the exact timing of the secondary check where JUST the right timing between an incoming push and reporting/ending your call could cause the app to crash. Triggering this bug required continually repeating the push -> report call -> end call cycle at a cadence of ~7s for several hours. T
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Activity
3w
Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
App installs but won’t launch on iPhone: “profile has not been explicitly trusted by the user” My app builds and installs on a physical iPhone, but it will not launch. Setup: Flutter 3.38.7 Xcode 26.3 iPhone 15 Pro Max iOS 26.3.1 Exact error: ERROR: The application failed to launch. (com.apple.dt.CoreDeviceError error 10002) Unable to launch com.sherpa-map.routestudio because it has an invalid code signature, inadequate entitlements or its profile has not been explicitly trusted by the user. (FBSOpenApplicationErrorDomain error 3) The confusing part is that on the iPhone, Settings > General > VPN & Device Management only shows VPN and Sign in to work or school account, so there is no obvious developer trust option to tap. Is this a current iOS/Xcode issue, or is there a new trust flow for developer-signed apps?
Replies
Boosts
Views
Activity
3w
Latest Beta Version Breaks Xcode Testing Builds on Physical devices.
This is a grave issue I am facing while testing my apps on my personal device. This is the error I seem to be getting: The application could not be launched because the Developer App Certificate is not trusted. And on the phone side, this is the message: Unable to Verify App. An internet connection is required to verify the trust of the developer Apple Development... Before I receive any recommendations, such as deleting Xcode or restarting my device, I would like to clarify that I have already taken all necessary precautions. The application I was testing appeared to function correctly in the morning a few hours prior to the update. However, after upgrading to the latest beta builds, iOS 26.4 beta and the latest macOS beta, this issue has become a recurring problem. I would greatly appreciate your assistance in resolving this matter, as it is of utmost importance to me.
Replies
2
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0
Views
112
Activity
3w
Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
same thing here. here is what I have tried: Tested on iPhone on both Wi‑Fi and cellular: same failure. -Checked iPhone Settings → General → VPN & Device Management: no developer cert/profile shown to “trust”. Regenerated signing in EAS: Ran eas credentials -p ios (logged into Apple Developer team) Deleted/revoked the existing Apple Distribution certificate Let EAS generate a new Distribution certificate and new Ad Hoc provisioning profile including the iPhone UDID. Rebuilt multiple times after credential reset: Verified the iPhone UDID was included in the ad-hoc profile by re-selecting devices Ran eas device:create (Website flow) Rebuilt and chose “No, let me choose devices again”, selected the target iPhone. Checked Apple verification endpoint reachability from iPhone: https://ppq.apple.com intermittently returned 502 Bad Gateway, later returned ok. Checked EAS build list and ensured installing the latest build ID from March 10, 2026 (not older IPAs signed with the revoked cert). Noted possible
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3w
Reply to ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device
Same problem. I've been dealing with this all day, until GPT told me about this thread. Mine is a Flutter project. I get The application could not be launched because the Developer App Certificate is not trusted. from Xcode, and Unable to Verify App in iOS.
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Reply to NSFileManager getRelationship:ofDirectoryAtURL:toItemAtURL:error: returning NSURLRelationshipSame for Different Directories
Perhaps I didn't explain myself well. I wasn't making assumptions about how the the APIs operate - the only thing I was claiming (well trying to) was that paths provide the concept of file location and in certain contexts that concept matters to GUI apps (with the NSBrowser example being an obvious one). Sure. And, to be clear, I don't mean that paths don't EVER have a place and/or aren't a good solution. However, I do think those use case are more limited then they seem and that most interactions with files are better handled through object references (which are tied to a specific file system object), NOT paths (which describe a location in the hierarchy). Our APIs don't do a very good job of expressing that idea, but APIs like reference URLs and bookmarks are actually object reference APIs, not just weird ways of storing paths. Very interesting. Yeah I use that (watch root) With the watch root flag set it does seem to just track whatever is at the path. Ahh... Yes, you're right. It's been awhile since I loo
Topic: App & System Services SubTopic: Core OS Tags:
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3w
Orphaned XCode simulator disk images
Recently I noticed that although my drive showed ~800Gb of usage, the folders within totally to around ~600Gb (and yes I was including hidden 'dot' files/folders. After some inspection I found that there are a whole set of Disk Media Images, that appear to be related to XCode simulators. Here's an extract from the command line diskutil list command: /dev/disk5 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +17.6 GB disk5 Physical Store disk4s1 1: APFS Volume iOS 26.2 Simulator 17.1 GB disk5s1 /dev/disk6 (disk image): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme +14.2 GB disk6 1: Apple_APFS Container disk7 14.2 GB disk6s1 /dev/disk7 (synthesized): #: TYPE NAME SIZE IDENTIFIER 0: APFS Container Scheme - +14.2 GB disk7 Physical Store disk6s1 1: APFS Volume XROS 26.2 Simulator 13.8 GB disk7s1 /dev/disk8 (disk image): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme +17.2 GB disk8 1: Apple_APFS Container disk9 17.2 GB disk8s1 /dev/disk9 (synthesized): #: TYPE NAME SIZ
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Reply to iPhone 17 Pro on iOS 26.3 stays unavailable in xcrun devicectl list devices even with Xcode 26.4 beta 2
It would be helpful if we could get a bug report with attached logs from both Mac and iOS. Please see our instructions for capturing Core Device logging for both platforms and attach the collected logs to your report, and then post the FB number here. — Ed Ford,  DTS Engineer
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Reply to Using iOS App on iPhone 5s with iOS 12.5.8
Per the Xcode 26.3 Release Notes, Xcode 26.3 supports on-device debugging in iOS 15 and later. iOS 12 is no longer supported target for running your app with the debugger attached.
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Reply to Inquiry Regarding Differences in App Store Server Notifications (V2) Behavior for Monthly and Annual Plans
There is no difference in behaviour. Please send us the transaction ID of the two transactions via a feedback assistant ticket to investigate further. Thank you How to File Feedback assistant ticket? https://feedbackassistant.apple.com/ Login with your developer account, Choose iOS & iPadOS” Choose AppStore “Incorrect & Unexpected behavior Input the issue description and title. Upload attachements Click “Submit” Copy the Ticket ID “FBxxxxxxx” and let us know.
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