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Installer packages are failing to install on macOS26.1
Hi, We use Flat package installers (.pkg based installers) to install our applications on macOS. In macOS 26.1, installation is failing with the error Unable to use PK session due to incompatible packages. Terminating. 2025-11-03 14:22:36+05:30 Admin-3 installer[1160]: Install failed: The Installer could not install the software because there was no software found to install. Same installer package is working on macOS 26. Any help is greatly appreciated.
15
0
645
Dec ’25
Background Assets Directory Collision
Hello, I'm trying to use multiple Background Assets Packs to host map tiles. This is problematic for a few reasons. MKTileOverlay requires a method that returns a URL. AssetPackManager.shared.url() throws, but it's unrelated to the url. It will return a URL even if it points to nothing. There's no name-spacing. Everything appears to be flattened. (See Error below) Simultaneously, this also is not the case as the documentation states: if there’s a path collision across multiple asset packs, then it’s undefined from which asset pack an individual file will be resolved. AssetPackManager.shared.url() doesn't have an optional parameter to explicitly declare the asset pack you want to access, like AssetPackManager.shared.contents(at: FilePath) does For example, I have multiple different tiles I'm trying to overlay for z: 10, x: 239, and y: 414. Foo/10/239/414.png Bar/10/239/414.png And even when explicitly stating the fold directory, it appears that the assets are flattened down. As I'm receiving this error. The URL for “Foo/10/239/414.png” couldn’t be retrieved: “414.png” couldn’t be copied to “239” because an item with the same name already exists.
2
0
279
Oct ’25
RECOLLECTING CODE FROM UPLOAD????
Hello All, I used to own an app named LOLIIPOP, and am in the process of transferring it to my new apple account. I am having two problems.... How do I transfer the source code and binary to my new apple account? My developers have an old code, so I need to send them the LAST code they uploaded to the App Store. How do I do that as well??? Please any help!!! Thanks, Mr. LM
1
0
106
Aug ’25
Is Apple reading reports in the new Feedback Assistant?
Dear Apple,I'm an iOS developer and provided feedback in the good old online bug tracker for many years.Decent conversations with Apple egnineers often resulted in bug fixes or updated documentation.The fact that my contributions helped to improve the products was rewarding.So I kept adding reports in the new Feedback Assistant app in macOS Catalina.But ever since (September 2019) I never ever got any response on any ticket.1 month ago I even added a report if Apple even read my reports. Again, no response ever since.So my question on this forum: Is Apple actually reading reports in the new Feedback Assistant?This can either be answered by Apple, or by other Developers that hopefully did response feedback from Apple. Or did not.Best regards,Martijn
10
2
3.9k
May ’25
crash while exectuing __llvm_profile_write_file() in Xcode26.0
I am developing an iOS in-app SDK for collecting code coverage data. The SDK writes coverage data to a specified file by calling __llvm_profile_set_filename and __llvm_profile_write_file. This implementation worked correctly until I switched to Xcode 26.0 to build my project. Now, when __llvm_profile_write_file() is executed, it crashes with the following error stack. Can anyone provide any assistance? Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000001 Exception Codes: 0x0000000000000001, 0x0000000000000001 Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11 Terminating Process: exc handler [454] Thread 96 name: Dispatch queue: com.test-coverage.processing Thread 96: Crashed: 0 Demo 0x122602ea8 initializeValueProfRuntimeRecord (in Demo) (InstrProfilingValue.c:351) 1 Demo 0x00000001226064c0 writeOneValueProfData (in Demo) (InstrProfilingWriter.c:153) 2 Demo 0x0000000122606308 writeValueProfData (in Demo) (InstrProfilingWriter.c:234) 3 Demo 0x00000001226060d0 lprofWriteDataImpl (in Demo) (InstrProfilingWriter.c:401) 4 Demo 0x0000000122605d98 lprofWriteData (in Demo) (InstrProfilingWriter.c:261) 5 Demo 0x0000000122604804 writeFile (in Demo) (InstrProfilingFile.c:536) 6 Demo 0x122604664 __llvm_profile_write_file_alias + 228 7 Demo 0x000000011c6dd108 -[BDTestCoverage p_dumpMainCoverageInfoWithCustomKey:] (in Demo) (TestCoverage.m:995) 8 Demo 0x000000011c6dcef8 -[BDTestCoverage p_dumpAllCoverageProfileWithCustomKey:] (in Demo) (TestCoverage.m:970)
0
1
260
Nov ’25
"Show API Changes" no longer available on Apple Developer Documentation website?
There was a time that Apple Developer Documentation provides a filter to show the changes across versions, at https://developer.apple.com/documentation/technologies , with purple (modified), green (added), and red (deprecated) annotations. I wonder if this feature is completely removed, or is it still hiding somewhere? It is helpful to diff the API changes among versions. Thanks. edit: as pointed out by Rick, here is an archive link to what it used to look like
2
0
260
Jul ’25
Will Icon Composer support development of tvOS and visionOS icons?
In the beta of Icon Composer, I see macOS, iOS, and watchOS icons, but there is nothing about visionOS and tvOS. Those icons are particularly hard and it would be great if this app worked for developing icons for all Apple platforms. I tried asking this in a WWDC group lab, but they didn't get to it and suggested posting to the forum.
2
1
192
Oct ’25
On Demand Resources as Legacy Technology
I read on this documentation : https://developer.apple.com/help/app-store-connect/reference/app-uploads/on-demand-resources-size-limits that On Demand Resources a legacy technology. Does this mean ODR will be deprecated? If so, when will it officially take effect? Our application is planning to use it, so we need more information to support our decision.
1
0
286
Nov ’25
SF Symbols 7: Hundreds of SF Symbols missing 'Availability' info
In SF Symbols 7 (115), there are 458 symbols missing Availability info. I only discovered this after using one that didn’t appear in iOS 18 but does in iOS 26. Questions: Are there plans to add Availability info for all symbols? If the field is blank, is there a safe latest-OS version we can assume? I realize managing 7,000+ icons is tough, but missing info like this makes development frustrating. It doesn't help that there's no build warning when a named image isn't found, it just defaults to the text label. Screenshot Screenshot of SF Symbols 7 showing three symbols missing Availability info. The symbol ellipsis.circle.badge is selected and its properties pane also shows no Availability info.
2
0
218
Oct ’25
How to install self signed certificate to iPhone simulator running iOS 18.5?
I am trying to communicate with the backend of my project. So I need to install the certificate into the simulator. I have the .pem file but when I drag-dropped it into the simulator, I got the error "Simulator device failed to complete the requested operation.". The simulator is an iPhone 16 Pro running iOS 18.5. Is there any way to install the cert to my simulator? PS: I can't use Apple Configurator or MDM because I am using the office's Mac. And I can't install anything there. So I can only do it manually.
3
0
406
Nov ’25
Assertion failed: (reconstituted == accumulator), function setFixup64, file OutputFile.cpp, line 2975
Xcode 16.2 Flutter version 3.27.1 0 0x1008abee4 __assert_rtn + 160 1 0x1008add9c ld::tool::OutputFile::setFixup64(unsigned char*, unsigned long long, ld::Atom const*) (.cold.3) + 0 2 0x100789640 ld::tool::OutputFile::setFixup64(unsigned char*, unsigned long long, ld::Atom const*) + 656 3 0x100785b78 ld::tool::OutputFile::applyFixUps(ld::Internal&, unsigned long long, ld::Atom const*, unsigned char*) + 4388 4 0x10078be18 ___ZN2ld4tool10OutputFile10writeAtomsERNS_8InternalEPh_block_invoke + 488 5 0x19bc19428 _dispatch_client_callout2 + 20 6 0x19bc2d850 _dispatch_apply_invoke3 + 336 7 0x19bc193e8 _dispatch_client_callout + 20 8 0x19bc1ac68 _dispatch_once_callout + 32 9 0x19bc2c8a4 _dispatch_apply_invoke + 252 10 0x19bc193e8 _dispatch_client_callout + 20 11 0x19bc2b080 _dispatch_root_queue_drain + 864 12 0x19bc2b6b8 _dispatch_worker_thread2 + 156 13 0x19bdc5fd0 _pthread_wqthread + 228 A linker snapshot was created at: /tmp/Test Kopi Kenangan.debug.dylib-2025-02-27-100512.ld-snapshot ld: Assertion failed: (reconstituted == accumulator), function setFixup64, file OutputFile.cpp, line 2975. clang: error: linker command failed with exit code 1 (use -v to see invocation)
5
1
677
Sep ’25
Developer Mode without PC
My phone's charging port is fried. It only charges wirelessly. Fixing it costs the same as the phone. I currently am having a lot of issues enrolling for apple developer program as well, so I can't use test flight right now. I want to enable developer mode on my phone, but it's never been connected to xcode before, so the option is not available. How do I enable developer mode without being able to connect it to a pc? I have a mac, and both my mac and iphone are on the same apple id. thank you
2
0
177
Feb ’26
Is this normal while developing an app on the watch?
I used to develop iPhone apps about a decade ago and am now back at it with an iPhone and companion Apple Watch app. Why does it suck so bad? I a must be doing something wrong, but what I am doing is out of the box. The majority of the time when I go to build on the watch I get: Previous preparation error: A connection to this device could not be established.; Timed out while attempting to establish tunnel using negotiated network parameters. Which I then first try to force quit the app on the watch and if that does not work, reboot the watch (which is pretty ridiculous). I tried Gemini and it gave me the following explanation: This is arguably the single most frustrating error in the entire watchOS development ecosystem. As an expert, I can tell you that you are not doing anything wrong; you are fighting a fragile architecture. Here is the technical breakdown of why this happens and a workflow to mitigate it without constant reboots. The Technical "Why" This error message reveals that the issue lies in the CoreDevice (and formerly usbmuxd) infrastructure, specifically in the secure transport layer. The "Tunnel" Failure: Xcode attempts to establish a secure, encrypted tunnel (DTXConnection) to the Apple Watch to push the debugger and the app binary. Unlike the iPhone, which can sustain a high-bandwidth connection easily, the Watch aggressively manages its radios (Bluetooth vs. WiFi vs. AWDL) to save battery. The "Handshake" Timeout: If the Watch is on Bluetooth (Low Energy) when Xcode initiates the tunnel, the bandwidth is insufficient. The system tries to escalate the connection to WiFi (or Apple Wireless Direct Link). If this negotiation takes even a few milliseconds too long—due to 2.4GHz interference, router mDNS configuration, or the Watch CPU being throttled—the handshake times out. The "Previous Preparation Error": This is the insidious part. Once the handshake fails once, Xcode’s device service caches that failure state for the device UUID. It marks the device as "unreachable" to prevent the IDE from hanging indefinitely on subsequent tries. Why you see it constantly: You aren't actually triggering a new connection attempt; you are hitting the cached "failed" state immediately. Unfortunately, the solutions it gives me are: The "Wired Proxy" Method (Most Reliable) This is the gold standard for watchOS debugging. Do not rely on "Connect via Network" for the Watch directly if you can avoid it. Disable WiFi on your Mac (temporarily) or ensure the Mac and iPhone are on the exact same SSID. Plug your iPhone into the Mac via USB. Ensure the Watch is paired to that iPhone. Result: Xcode will tunnel the instructions through the USB connection to the Phone, and the Phone acts as a high-bandwidth proxy to the Watch. This eliminates the "Mac-to-Watch" WiFi negotiation failure point. Do you hit this regularly? What do you do to make for a smooth development and deployment process? Or is it really this fragile? Thanks for any help! Bryan
8
1
639
1w
Installer packages are failing to install on macOS26.1
Hi, We use Flat package installers (.pkg based installers) to install our applications on macOS. In macOS 26.1, installation is failing with the error Unable to use PK session due to incompatible packages. Terminating. 2025-11-03 14:22:36+05:30 Admin-3 installer[1160]: Install failed: The Installer could not install the software because there was no software found to install. Same installer package is working on macOS 26. Any help is greatly appreciated.
Replies
15
Boosts
0
Views
645
Activity
Dec ’25
How to test equality with a tolerance in Swift Testing
So I can see from the documentation that XCTAssertEqual(x, y) becomes #expect(x == y), but what about XCTAssertEqual(x, y, accuracy: 0.2)? Does something already exist or do we need to write a more involved statement to see if x is less than y plus z and more than y minus z?
Replies
1
Boosts
1
Views
534
Activity
May ’25
Background Assets Directory Collision
Hello, I'm trying to use multiple Background Assets Packs to host map tiles. This is problematic for a few reasons. MKTileOverlay requires a method that returns a URL. AssetPackManager.shared.url() throws, but it's unrelated to the url. It will return a URL even if it points to nothing. There's no name-spacing. Everything appears to be flattened. (See Error below) Simultaneously, this also is not the case as the documentation states: if there’s a path collision across multiple asset packs, then it’s undefined from which asset pack an individual file will be resolved. AssetPackManager.shared.url() doesn't have an optional parameter to explicitly declare the asset pack you want to access, like AssetPackManager.shared.contents(at: FilePath) does For example, I have multiple different tiles I'm trying to overlay for z: 10, x: 239, and y: 414. Foo/10/239/414.png Bar/10/239/414.png And even when explicitly stating the fold directory, it appears that the assets are flattened down. As I'm receiving this error. The URL for “Foo/10/239/414.png” couldn’t be retrieved: “414.png” couldn’t be copied to “239” because an item with the same name already exists.
Replies
2
Boosts
0
Views
279
Activity
Oct ’25
Notarization stuck in 'In Progress' for 24+ hours - submission 55877c61-6e7e-4cc7-80aa-709a76d3ddad
As it has already been reported elsewehere, I also face the problem of endless waiting time for my submissions to be notarized. This prevents me from shipping a new release. A waiting/processing time of multiple days is simply unacceptable. I kindly request to fix this.
Replies
3
Boosts
0
Views
147
Activity
1w
RECOLLECTING CODE FROM UPLOAD????
Hello All, I used to own an app named LOLIIPOP, and am in the process of transferring it to my new apple account. I am having two problems.... How do I transfer the source code and binary to my new apple account? My developers have an old code, so I need to send them the LAST code they uploaded to the App Store. How do I do that as well??? Please any help!!! Thanks, Mr. LM
Replies
1
Boosts
0
Views
106
Activity
Aug ’25
UITests recording throws an error when running on an M1 chip
"UITests recording reports 'The capability "Create Service Socket" is not supported by this device.' on M1 chip, but works normally on Intel chip."
Replies
4
Boosts
1
Views
510
Activity
Feb ’26
Is Apple reading reports in the new Feedback Assistant?
Dear Apple,I'm an iOS developer and provided feedback in the good old online bug tracker for many years.Decent conversations with Apple egnineers often resulted in bug fixes or updated documentation.The fact that my contributions helped to improve the products was rewarding.So I kept adding reports in the new Feedback Assistant app in macOS Catalina.But ever since (September 2019) I never ever got any response on any ticket.1 month ago I even added a report if Apple even read my reports. Again, no response ever since.So my question on this forum: Is Apple actually reading reports in the new Feedback Assistant?This can either be answered by Apple, or by other Developers that hopefully did response feedback from Apple. Or did not.Best regards,Martijn
Replies
10
Boosts
2
Views
3.9k
Activity
May ’25
libclang_rt.fuzzer_osx.a not found
I tried to build my project with -fsanitize=fuzzer. This failed to link with libclang_rt.fuzzer_osx.a not found when attempting to link the code. I mean really!! Why on earth would you exclude this from the version of clang that ships with XCode!
Replies
2
Boosts
0
Views
79
Activity
1w
crash while exectuing __llvm_profile_write_file() in Xcode26.0
I am developing an iOS in-app SDK for collecting code coverage data. The SDK writes coverage data to a specified file by calling __llvm_profile_set_filename and __llvm_profile_write_file. This implementation worked correctly until I switched to Xcode 26.0 to build my project. Now, when __llvm_profile_write_file() is executed, it crashes with the following error stack. Can anyone provide any assistance? Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000001 Exception Codes: 0x0000000000000001, 0x0000000000000001 Termination Reason: Namespace SIGNAL, Code 11, Segmentation fault: 11 Terminating Process: exc handler [454] Thread 96 name: Dispatch queue: com.test-coverage.processing Thread 96: Crashed: 0 Demo 0x122602ea8 initializeValueProfRuntimeRecord (in Demo) (InstrProfilingValue.c:351) 1 Demo 0x00000001226064c0 writeOneValueProfData (in Demo) (InstrProfilingWriter.c:153) 2 Demo 0x0000000122606308 writeValueProfData (in Demo) (InstrProfilingWriter.c:234) 3 Demo 0x00000001226060d0 lprofWriteDataImpl (in Demo) (InstrProfilingWriter.c:401) 4 Demo 0x0000000122605d98 lprofWriteData (in Demo) (InstrProfilingWriter.c:261) 5 Demo 0x0000000122604804 writeFile (in Demo) (InstrProfilingFile.c:536) 6 Demo 0x122604664 __llvm_profile_write_file_alias + 228 7 Demo 0x000000011c6dd108 -[BDTestCoverage p_dumpMainCoverageInfoWithCustomKey:] (in Demo) (TestCoverage.m:995) 8 Demo 0x000000011c6dcef8 -[BDTestCoverage p_dumpAllCoverageProfileWithCustomKey:] (in Demo) (TestCoverage.m:970)
Replies
0
Boosts
1
Views
260
Activity
Nov ’25
"Show API Changes" no longer available on Apple Developer Documentation website?
There was a time that Apple Developer Documentation provides a filter to show the changes across versions, at https://developer.apple.com/documentation/technologies , with purple (modified), green (added), and red (deprecated) annotations. I wonder if this feature is completely removed, or is it still hiding somewhere? It is helpful to diff the API changes among versions. Thanks. edit: as pointed out by Rick, here is an archive link to what it used to look like
Replies
2
Boosts
0
Views
260
Activity
Jul ’25
Will Icon Composer support development of tvOS and visionOS icons?
In the beta of Icon Composer, I see macOS, iOS, and watchOS icons, but there is nothing about visionOS and tvOS. Those icons are particularly hard and it would be great if this app worked for developing icons for all Apple platforms. I tried asking this in a WWDC group lab, but they didn't get to it and suggested posting to the forum.
Replies
2
Boosts
1
Views
192
Activity
Oct ’25
On Demand Resources as Legacy Technology
I read on this documentation : https://developer.apple.com/help/app-store-connect/reference/app-uploads/on-demand-resources-size-limits that On Demand Resources a legacy technology. Does this mean ODR will be deprecated? If so, when will it officially take effect? Our application is planning to use it, so we need more information to support our decision.
Replies
1
Boosts
0
Views
286
Activity
Nov ’25
Download link broken for Foundation Models Adaptor Training Toolkit
https://developer.apple.com/download/foundation-models-adapter/ Download link to toolkit is borked: https://developer.apple.com/services-account/download?path=/Developer_Tools/Foundation_Models_Framework_Adapter_Toolkit/adapter_training_toolkit_v0_1_0.zip
Replies
2
Boosts
1
Views
274
Activity
Jun ’25
SF Symbols 7: Hundreds of SF Symbols missing 'Availability' info
In SF Symbols 7 (115), there are 458 symbols missing Availability info. I only discovered this after using one that didn’t appear in iOS 18 but does in iOS 26. Questions: Are there plans to add Availability info for all symbols? If the field is blank, is there a safe latest-OS version we can assume? I realize managing 7,000+ icons is tough, but missing info like this makes development frustrating. It doesn't help that there's no build warning when a named image isn't found, it just defaults to the text label. Screenshot Screenshot of SF Symbols 7 showing three symbols missing Availability info. The symbol ellipsis.circle.badge is selected and its properties pane also shows no Availability info.
Replies
2
Boosts
0
Views
218
Activity
Oct ’25
Forbidden request when using API in Codemagic
Failed to fetch certificates: This request is forbidden for security reasons - Unable to find a team with the given Content Provider ID '72df6041-c291-4d95-b690-2a3b75ff72f6' to which you belong. Please contact Apple Developer Program Support. https://developer.apple.com/support
Replies
1
Boosts
0
Views
193
Activity
Sep ’25
Unable to sign in to Feedback Assistant
I'm unable to sign in to Feedback Assistant on macOS. I have two Apple accounts and neither will sign in. I am able to sign in via the website. With the desktop app I'm getting a rather generic error message: "Unable to sign in to Feedback Assistant Thank you for your patience. Please try again later." This started this morning.
Replies
6
Boosts
1
Views
221
Activity
Oct ’25
How to install self signed certificate to iPhone simulator running iOS 18.5?
I am trying to communicate with the backend of my project. So I need to install the certificate into the simulator. I have the .pem file but when I drag-dropped it into the simulator, I got the error "Simulator device failed to complete the requested operation.". The simulator is an iPhone 16 Pro running iOS 18.5. Is there any way to install the cert to my simulator? PS: I can't use Apple Configurator or MDM because I am using the office's Mac. And I can't install anything there. So I can only do it manually.
Replies
3
Boosts
0
Views
406
Activity
Nov ’25
Assertion failed: (reconstituted == accumulator), function setFixup64, file OutputFile.cpp, line 2975
Xcode 16.2 Flutter version 3.27.1 0 0x1008abee4 __assert_rtn + 160 1 0x1008add9c ld::tool::OutputFile::setFixup64(unsigned char*, unsigned long long, ld::Atom const*) (.cold.3) + 0 2 0x100789640 ld::tool::OutputFile::setFixup64(unsigned char*, unsigned long long, ld::Atom const*) + 656 3 0x100785b78 ld::tool::OutputFile::applyFixUps(ld::Internal&, unsigned long long, ld::Atom const*, unsigned char*) + 4388 4 0x10078be18 ___ZN2ld4tool10OutputFile10writeAtomsERNS_8InternalEPh_block_invoke + 488 5 0x19bc19428 _dispatch_client_callout2 + 20 6 0x19bc2d850 _dispatch_apply_invoke3 + 336 7 0x19bc193e8 _dispatch_client_callout + 20 8 0x19bc1ac68 _dispatch_once_callout + 32 9 0x19bc2c8a4 _dispatch_apply_invoke + 252 10 0x19bc193e8 _dispatch_client_callout + 20 11 0x19bc2b080 _dispatch_root_queue_drain + 864 12 0x19bc2b6b8 _dispatch_worker_thread2 + 156 13 0x19bdc5fd0 _pthread_wqthread + 228 A linker snapshot was created at: /tmp/Test Kopi Kenangan.debug.dylib-2025-02-27-100512.ld-snapshot ld: Assertion failed: (reconstituted == accumulator), function setFixup64, file OutputFile.cpp, line 2975. clang: error: linker command failed with exit code 1 (use -v to see invocation)
Replies
5
Boosts
1
Views
677
Activity
Sep ’25
Developer Mode without PC
My phone's charging port is fried. It only charges wirelessly. Fixing it costs the same as the phone. I currently am having a lot of issues enrolling for apple developer program as well, so I can't use test flight right now. I want to enable developer mode on my phone, but it's never been connected to xcode before, so the option is not available. How do I enable developer mode without being able to connect it to a pc? I have a mac, and both my mac and iphone are on the same apple id. thank you
Replies
2
Boosts
0
Views
177
Activity
Feb ’26
Is this normal while developing an app on the watch?
I used to develop iPhone apps about a decade ago and am now back at it with an iPhone and companion Apple Watch app. Why does it suck so bad? I a must be doing something wrong, but what I am doing is out of the box. The majority of the time when I go to build on the watch I get: Previous preparation error: A connection to this device could not be established.; Timed out while attempting to establish tunnel using negotiated network parameters. Which I then first try to force quit the app on the watch and if that does not work, reboot the watch (which is pretty ridiculous). I tried Gemini and it gave me the following explanation: This is arguably the single most frustrating error in the entire watchOS development ecosystem. As an expert, I can tell you that you are not doing anything wrong; you are fighting a fragile architecture. Here is the technical breakdown of why this happens and a workflow to mitigate it without constant reboots. The Technical "Why" This error message reveals that the issue lies in the CoreDevice (and formerly usbmuxd) infrastructure, specifically in the secure transport layer. The "Tunnel" Failure: Xcode attempts to establish a secure, encrypted tunnel (DTXConnection) to the Apple Watch to push the debugger and the app binary. Unlike the iPhone, which can sustain a high-bandwidth connection easily, the Watch aggressively manages its radios (Bluetooth vs. WiFi vs. AWDL) to save battery. The "Handshake" Timeout: If the Watch is on Bluetooth (Low Energy) when Xcode initiates the tunnel, the bandwidth is insufficient. The system tries to escalate the connection to WiFi (or Apple Wireless Direct Link). If this negotiation takes even a few milliseconds too long—due to 2.4GHz interference, router mDNS configuration, or the Watch CPU being throttled—the handshake times out. The "Previous Preparation Error": This is the insidious part. Once the handshake fails once, Xcode’s device service caches that failure state for the device UUID. It marks the device as "unreachable" to prevent the IDE from hanging indefinitely on subsequent tries. Why you see it constantly: You aren't actually triggering a new connection attempt; you are hitting the cached "failed" state immediately. Unfortunately, the solutions it gives me are: The "Wired Proxy" Method (Most Reliable) This is the gold standard for watchOS debugging. Do not rely on "Connect via Network" for the Watch directly if you can avoid it. Disable WiFi on your Mac (temporarily) or ensure the Mac and iPhone are on the exact same SSID. Plug your iPhone into the Mac via USB. Ensure the Watch is paired to that iPhone. Result: Xcode will tunnel the instructions through the USB connection to the Phone, and the Phone acts as a high-bandwidth proxy to the Watch. This eliminates the "Mac-to-Watch" WiFi negotiation failure point. Do you hit this regularly? What do you do to make for a smooth development and deployment process? Or is it really this fragile? Thanks for any help! Bryan
Replies
8
Boosts
1
Views
639
Activity
1w