iOS crash report: System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_

Question

iOS crash report: System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_

Kim Strasser 1,671

I have uploaded my iOS build on TestFlight and then installed it on my iPad. My game always crashes 1-2 seconds after I opened it on my iPad. It only crashes in release mode and not in debug mode.

It's not the first time that I have this kind of crash. Last time the problem could be solved when I changed Link Framework SDKs Only to Don't link in the iOS project Build properties: https://learn.microsoft.com/en-sg/answers/questions/2151387/ios-crash-report-system-runtime-compilerservices-a

This time I already use Don't link in the iOS project Build properties but my app still crashes.

SharedCode_MyClass__Updated__303_MoveNext (in ProjectiOS) (<unknown>:1) System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_ (in ProjectiOS) + 388 ProjectiOS_SharedCode_MyClass_Update_Microsoft_Xna_Framework_GameTime (in ProjectiOS) + 184 -[iOSGameView doTick] (in ProjectiOS) (registrar.mm:14955)

Why does my app crash in release mode?

I use Visual Studio Community 2022 (64-bit) Version 17.14.19.

Screenshot 2025-11-04 222509

My iOS .csproj file:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net9.0-ios</TargetFramework>
    <OutputType>Exe</OutputType>
    <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion>
    <CodesignKey>Apple Distribution: Kim Strasser (...)</CodesignKey>
    </PropertyGroup>
    <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <CreatePackage>false</CreatePackage>
    <WarningLevel>4</WarningLevel>
    <CodesignProvision>Automatic</CodesignProvision>
    <MtouchLink>None</MtouchLink>
    <NoStdLib>false</NoStdLib>
  </PropertyGroup>
<PropertyGroup>
    <NoSymbolStrip>true</NoSymbolStrip>
</PropertyGroup>
<PropertyGroup> <DisableFastUpToDateCheck>true</DisableFastUpToDateCheck> <CollectBundleResourcesDependsOn> IncludeContent; </CollectBundleResourcesDependsOn> <ProvisioningType>manual</ProvisioningType> <CodesignProvision>ProjectiOS Profile Distribution</CodesignProvision> </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <CreatePackage>false</CreatePackage>
    <NoStdLib>false</NoStdLib>
    <MtouchLink>None</MtouchLink>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net6.0-ios|AnyCPU'">
    <CodesignKey>iPhone Developer</CodesignKey>
    <CodesignProvision>ProjectiOS Profile Development</CodesignProvision>
    <MtouchDebug>true</MtouchDebug>
    <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net7.0-ios|AnyCPU'">
    <CodesignProvision>Automatic</CodesignProvision>
    <CodesignKey>iPhone Developer</CodesignKey>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net7.0-ios|AnyCPU'" />
…
 <ProjectExtensions><VisualStudio><UserProperties XamarinHotReloadDebuggerTimeoutExceptionProjectiOSHideInfoBar="True" /></VisualStudio></ProjectExtensions>
</Project>

Is something wrong in my .csproj file? Should I change something in the .csproj file before uploading my app to TestFlight or before distribution in the Apple App Store?

Starry Night 615 Reputation points

2025-11-05T07:06:13.3833333+00:00

Have you tried to update your visual studio to the latest version?
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-05T07:16:59.5433333+00:00
Hello Kim,

Based on the information you've provided, it seems the issue is related to the settings used when building your app for release.

Aside from linker, another setting that can cause this type of problem is the LLVM compiler, which your project uses for release builds.

To help determine if this is the cause, I recommend turning off the LLVM compiler for your next release build. You can do this by editing your .csproj file and adding <UseLlvm>false</UseLlvm> to the property group for your release configuration, as shown below:

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>false</CreatePackage> <NoStdLib>false</NoStdLib> <MtouchLink>None</MtouchLink> <UseLlvm>false</UseLlvm> </PropertyGroup>

Or turn off the LLVM setting in your IDE if it provides that option.

After making this change, please clean your project, create a new build, and deploy it to TestFlight to check if the crash still occurs.

Note

I also noticed that your .csproj file contains some settings for older .NET versions. While these are likely not causing the current issue, removing them can help make your project file cleaner and easier to manage in the future.

If the crash persists, we can explore other potential causes.

Please let me know if this helps.
Kim Strasser 1,671 Reputation points

2025-11-05T14:37:23.05+00:00
I get the same crash with a new build. My .csproj file:

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>false</CreatePackage> <NoStdLib>false</NoStdLib> <MtouchLink>None</MtouchLink> <UseLlvm>false</UseLlvm> <MtouchUseLlvm>False</MtouchUseLlvm> <MtouchNoSymbolStrip>True</MtouchNoSymbolStrip> </PropertyGroup>

I use Visual Studio Community 2022 (64-bit) Version 17.14.19 and Xcode Version 26.0.1. Should I try to install an older Xcode version on my MacBook Air? Could the Xcode version be the reason for the crash?
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-06T02:45:43.0533333+00:00
Please don't disable symbols. AOT compilation needs debug symbols to provide meaningful stack traces. Also, you could try out these settings.

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>true</CreatePackage> <MtouchLink>None</MtouchLink>  <DebugType>pdbonly</DebugType>  <MtouchDebug>true</MtouchDebug> <NoStdLib>false</NoStdLib> </PropertyGroup>

Remember to clean up your project, delete bin/obj folders, and rebuild after making these changes.

The version of Xcode is likely not the cause, so downgrading it is not recommended.
Kim Strasser 1,671 Reputation points

2025-11-06T11:05:08.1266667+00:00
I get this error when I try to rebuild my iOS project:

1>IL stripping assemblies 1>bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist : error : Error loading 'bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist': Could not find file 'C:\Users\Kim Strasser\source\repos\Newvisualstudio\MyProject\MyProjectiOS\bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist'. 1>Done building project "MyProjectiOS.csproj" -- FAILED. ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ========== ========== Rebuild completed at 11:01 and took 19:29,211 minutes ==========

I don´t know why I´m getting this error. My Info.plist is in my iOS project, I can open it normally in my iOS project in VS 2022.

I use this release configuration:

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>true</CreatePackage> <MtouchLink>None</MtouchLink>  <DebugType>pdbonly</DebugType>  <MtouchDebug>true</MtouchDebug> <NoStdLib>false</NoStdLib> </PropertyGroup>
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-07T02:54:11.64+00:00
Hello Kim,

Let’s lock this down to a short checklist you can follow and confirm step by step.

Please do these in order:

Close Visual Studio.

Delete every bin and obj folder for all projects in the solution.

Edit the iOS .csproj:

Keep the first main PropertyGroup (TargetFramework etc.).

Keep one Debug group.

Keep one Release group.

Remove every PropertyGroup mentioning net6.0, net7.0, or duplicate Release/Debug settings.

In the Release group, use only this:

<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'"> <CreatePackage>true</CreatePackage> <MtouchLink>SdkOnly</MtouchLink> <DebugType>portable</DebugType> <MtouchDebug>true</MtouchDebug> <Optimize>true</Optimize> <UseLlvm>false</UseLlvm> <MtouchExtraArgs>--enable-detailed-crash-reports</MtouchExtraArgs> </PropertyGroup>

In the Debug group, use only this:

<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'"> <MtouchLink>SdkOnly</MtouchLink> <DebugType>portable</DebugType> <MtouchDebug>true</MtouchDebug> <Optimize>false</Optimize> <UseLlvm>false</UseLlvm> </PropertyGroup>

Remove every other occurrence of:

MtouchLink with value None

NoSymbolStrip

MtouchNoSymbolStrip

Extra duplicate MtouchDebug / UseLlvm lines

Reopen the solution. Use Clean Solution, then Build. If it fails, copy the full build output (start to failure), not just the last error line.

Archive the Release build (this gives you dSYMs), then submit that archive to TestFlight.

In the async update method that appeared in the crash stack, wrap the first code block in a try/catch and log the exception (Console.WriteLine or Debug.WriteLine).

After reproducing the crash on device/TestFlight:

Get the device console log from launch to crash.

Download and symbolicate the crash report using the dSYMs from the archive.

If it still crashes with no useful info, temporarily change MtouchExtraArgs to:
--enable-detailed-crash-reports --disable-generic-sharing --disable-inlining
Build and test once.

Please send back:

The exact Release PropertyGroup now in the file (or the full .csproj file).

Confirmation the old groups were removed.

First 30 lines of build output plus the error section if build failed.

The symbolicated crash trace (not the raw unsymbolicated one).

Any exception message logged from the try/catch.

Once we have those, we can move from cleanup to the actual runtime cause. Let me know when each step is done rather than pasting partial edits.

Kim Strasser 1,671

Clean and build the solution with the updated .csproj file works. But I still get this error in release mode. I don´t get an error when I debug on my iPad Air.

Error loading 'bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist': Could not find file 'C:\Users\Kim Strasser\source\repos\Newvisualstudio\MyProject\MyProjectiOS\bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist'.

My .csproj file:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net9.0-ios</TargetFramework>
    <OutputType>Exe</OutputType>
    <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion>
    <CodesignKey>iPhone Developer: Kim Strasser (...)</CodesignKey>
    </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
  <MtouchLink>SdkOnly</MtouchLink>
  <DebugType>portable</DebugType>
  <MtouchDebug>true</MtouchDebug>
  <Optimize>false</Optimize>
  <UseLlvm>false</UseLlvm>
  </PropertyGroup>
<PropertyGroup> <DisableFastUpToDateCheck>true</DisableFastUpToDateCheck> <CollectBundleResourcesDependsOn> IncludeContent; </CollectBundleResourcesDependsOn> <ProvisioningType>manual</ProvisioningType> <CodesignProvision>MyProject Profile Development</CodesignProvision> </PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
  <CreatePackage>true</CreatePackage>
  <MtouchLink>SdkOnly</MtouchLink>
  <DebugType>portable</DebugType>
  <MtouchDebug>true</MtouchDebug>
  <Optimize>true</Optimize>
  <UseLlvm>false</UseLlvm>
  <MtouchExtraArgs>--enable-detailed-crash-reports</MtouchExtraArgs>
</PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.Maui.Controls" />
    <PackageReference Include="Microsoft.Maui.Core" Version="9.0.120" />
    <PackageReference Include="Microsoft.Maui.Essentials" />
    <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.4.1" />
    <PackageReference Include="MonoGame.Framework.iOS" Version="3.8.4.1" />
    <PackageReference Include="MonoGame.Library.OpenAL" Version="1.24.3.2" />
    <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
    <PackageReference Include="PlayFabAllSDK" Version="1.205.250718" />
    <PackageReference Include="Microsoft.AppCenter.Analytics" Version="5.0.7" />
    <PackageReference Include="Microsoft.AppCenter.Crashes" Version="5.0.7" />
    <PackageReference Include="Plugin.InAppBilling" Version="9.1.0" />
    <PackageReference Include="Plugin.MediaManager" Version="1.2.2" />
    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
  </ItemGroup>
  <ItemGroup>
    <BundleResource Include="GoogleService-Info.plist" />
    <BundleResource Include="Launchscreenlogo.png" />
    <BundleResource Include="Default.png" />
  </ItemGroup>
 <Target Name="RestoreDotnetTools" BeforeTargets="Restore">
    <Message Text="Restoring dotnet tools" Importance="High" />
    <Exec Command="dotnet tool restore" />
  </Target>
  <Import Project="..\ProjectA\ProjectA.projitems" Label="Shared" Condition="Exists('..\ProjectA\ProjectA.projitems')" />
  <Import Project="..\ProjectB\ProjectB.projitems" Label="Shared" />
  <Import Project="..\ProjectC\ProjectC.projitems" Label="Shared" />
  <ItemGroup>
    <PackageReference Update="Microsoft.Maui.Controls" Version="9.0.120" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Update="Microsoft.Maui.Controls.Compatibility" Version="9.0.10" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Update="Microsoft.Maui.Essentials" Version="9.0.120" />
  </ItemGroup>
  <ProjectExtensions><VisualStudio><UserProperties XamarinHotReloadDebuggerTimeoutExceptionMyProjectiOSHideInfoBar="True" /></VisualStudio></ProjectExtensions>
</Project>

Michael Le (WICLOUD CORPORATION) 5,930 Microsoft External Staff Moderator

I've spotted another extra PropertyGroup in your .csproj.

<PropertyGroup>
  <DisableFastUpToDateCheck>true</DisableFastUpToDateCheck>
  <CollectBundleResourcesDependsOn> IncludeContent; </CollectBundleResourcesDependsOn>
  <ProvisioningType>manual</ProvisioningType>
  <CodesignProvision>MyProject Profile Development</CodesignProvision>
</PropertyGroup>

Additionally, your global CodesignKey is set to "iPhone Developer," which is for debugging. For a Release/Distribution build, it needs to be your "Apple Distribution" key. It's better to set these within their specific configuration groups (Debug and Release) to avoid conflicts.

Remove the above extra PropertyGroup.
Organize your code signing keys, your file structure should look like this:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net9.0-ios</TargetFramework>
    <OutputType>Exe</OutputType>
    <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion>
    <!-- The global CodesignKey has been removed from here -->
  </PropertyGroup>

  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
    <!-- ... your other Debug settings ... -->
    <CodesignKey>iPhone Developer: Kim Strasser (...)</CodesignKey>
    <CodesignProvision>MyProject Profile Development</CodesignProvision>
  </PropertyGroup>

  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <!-- ... your other Release settings ... -->
    <CodesignKey>Apple Distribution: Kim Strasser (...)</CodesignKey>
    <CodesignProvision>MyProject Profile Distribution</CodesignProvision>
  </PropertyGroup>

  <!-- ... rest of your project file ... -->
</Project>

After making changes, delete all .vs, bin, and obj folders, then clean and rebuild your solution.

Kim Strasser 1,671 Reputation points

2025-11-11T14:44:43.37+00:00

I have decided to wait a few weeks with my iOS project until a new Visual Studio Community 2022 version is released. Maybe my issue get solved in a newer VS version and then I don´t need to install an old VS version.
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-12T04:03:58.6066667+00:00

Visual Studio 17.14.20 has been released today—please check it out. Let me know if the issue persists after updating.
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-18T10:18:45.1366667+00:00

Hello @Kim Strasser , have you been able to resolve the problem? If you're still encountering issues, please don't hesitate to reach out.
Harry Vo (WICLOUD CORPORATION) 3,505 Reputation points Microsoft External Staff Moderator

2025-11-25T08:29:35.14+00:00

Hi @Kim Strasser , do you have any update yet?

Kim Strasser 1,671

I have installed Visual Studio 17.14.21 and I still get the error IL Trimmer has encountered an unexpected error.

Then I have installed Visual Studio Community 2026 Version 18.0.2 and I get this error when I try to build my iOS project in Release mode:

Error loading 'bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist': Could not find file 'C:\ProjectTestVSInsiders\ProjectiOS\ProjectiOS\bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist'.

My csproj:

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net10.0-ios</TargetFramework>
    <OutputType>Exe</OutputType>
    <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion>
    <ApplicationVersion>1.2</ApplicationVersion>
    <ApplicationDisplayVersion>1.2</ApplicationDisplayVersion>
    <CodesignKey>iPhone Distribution: Kim Strasser (...)</CodesignKey>
    <CodesignProvision>Project iOS Profile Distribution</CodesignProvision>
    <ProvisioningType>manual</ProvisioningType>
  </PropertyGroup>
  <PropertyGroup Condition="'$(TargetFramework)'=='net10.0-ios' And '$(Configuration)'=='Debug'">
  <MtouchLink>None</MtouchLink> <!--Disables linking/trimming for all assemblies, as recommended by the error message.-->
  <EnableAssemblyILStripping>False</EnableAssemblyILStripping>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
  <CreatePackage>true</CreatePackage>
  <MtouchLink>SdkOnly</MtouchLink>
  <DebugType>portable</DebugType>
  <MtouchDebug>true</MtouchDebug>
  <Optimize>true</Optimize>
  <UseLlvm>false</UseLlvm>
  <MtouchExtraArgs>--enable-detailed-crash-reports</MtouchExtraArgs>
  <MtouchUseLlvm>False</MtouchUseLlvm>
  </PropertyGroup>

Screenshot 2025-12-03 144015

1 answer

Your answer

Starry Night 615 Reputation points

2025-11-05T07:06:13.3833333+00:00

Have you tried to update your visual studio to the latest version?
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-05T07:16:59.5433333+00:00

Hello Kim,

Based on the information you've provided, it seems the issue is related to the settings used when building your app for release.

Aside from linker, another setting that can cause this type of problem is the LLVM compiler, which your project uses for release builds.

To help determine if this is the cause, I recommend turning off the LLVM compiler for your next release build. You can do this by editing your .csproj file and adding <UseLlvm>false</UseLlvm> to the property group for your release configuration, as shown below:

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>false</CreatePackage> <NoStdLib>false</NoStdLib> <MtouchLink>None</MtouchLink> <UseLlvm>false</UseLlvm> </PropertyGroup>

Or turn off the LLVM setting in your IDE if it provides that option.

After making this change, please clean your project, create a new build, and deploy it to TestFlight to check if the crash still occurs.

Note

I also noticed that your .csproj file contains some settings for older .NET versions. While these are likely not causing the current issue, removing them can help make your project file cleaner and easier to manage in the future.

If the crash persists, we can explore other potential causes.

Please let me know if this helps.
Kim Strasser 1,671 Reputation points

2025-11-05T14:37:23.05+00:00

I get the same crash with a new build. My .csproj file:

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>false</CreatePackage> <NoStdLib>false</NoStdLib> <MtouchLink>None</MtouchLink> <UseLlvm>false</UseLlvm> <MtouchUseLlvm>False</MtouchUseLlvm> <MtouchNoSymbolStrip>True</MtouchNoSymbolStrip> </PropertyGroup>

I use Visual Studio Community 2022 (64-bit) Version 17.14.19 and Xcode Version 26.0.1. Should I try to install an older Xcode version on my MacBook Air? Could the Xcode version be the reason for the crash?
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-06T02:45:43.0533333+00:00

Please don't disable symbols. AOT compilation needs debug symbols to provide meaningful stack traces. Also, you could try out these settings.

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>true</CreatePackage> <MtouchLink>None</MtouchLink>  <DebugType>pdbonly</DebugType>  <MtouchDebug>true</MtouchDebug> <NoStdLib>false</NoStdLib> </PropertyGroup>

Remember to clean up your project, delete bin/obj folders, and rebuild after making these changes.

The version of Xcode is likely not the cause, so downgrading it is not recommended.
Kim Strasser 1,671 Reputation points

2025-11-06T11:05:08.1266667+00:00

I get this error when I try to rebuild my iOS project:

1>IL stripping assemblies 1>bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist : error : Error loading 'bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist': Could not find file 'C:\Users\Kim Strasser\source\repos\Newvisualstudio\MyProject\MyProjectiOS\bin\Release\net9.0-ios\ios-arm64\MyProjectiOS.app\Info.plist'. 1>Done building project "MyProjectiOS.csproj" -- FAILED. ========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ========== ========== Rebuild completed at 11:01 and took 19:29,211 minutes ==========

I don´t know why I´m getting this error. My Info.plist is in my iOS project, I can open it normally in my iOS project in VS 2022.

I use this release configuration:

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "> <CreatePackage>true</CreatePackage> <MtouchLink>None</MtouchLink>  <DebugType>pdbonly</DebugType>  <MtouchDebug>true</MtouchDebug> <NoStdLib>false</NoStdLib> </PropertyGroup>
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-10T09:35:46.4366667+00:00

I've spotted another extra PropertyGroup in your .csproj.

<PropertyGroup> <DisableFastUpToDateCheck>true</DisableFastUpToDateCheck> <CollectBundleResourcesDependsOn> IncludeContent; </CollectBundleResourcesDependsOn> <ProvisioningType>manual</ProvisioningType> <CodesignProvision>MyProject Profile Development</CodesignProvision> </PropertyGroup>

Additionally, your global CodesignKey is set to "iPhone Developer," which is for debugging. For a Release/Distribution build, it needs to be your "Apple Distribution" key. It's better to set these within their specific configuration groups (Debug and Release) to avoid conflicts.

Remove the above extra PropertyGroup.

Organize your code signing keys, your file structure should look like this:

<Project Sdk="Microsoft.NET.Sdk"> <PropertyGroup> <TargetFramework>net9.0-ios</TargetFramework> <OutputType>Exe</OutputType> <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion>  </PropertyGroup> <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">  <CodesignKey>iPhone Developer: Kim Strasser (...)</CodesignKey> <CodesignProvision>MyProject Profile Development</CodesignProvision> </PropertyGroup> <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">  <CodesignKey>Apple Distribution: Kim Strasser (...)</CodesignKey> <CodesignProvision>MyProject Profile Distribution</CodesignProvision> </PropertyGroup>  </Project>

After making changes, delete all .vs, bin, and obj folders, then clean and rebuild your solution.
Kim Strasser 1,671 Reputation points

2025-11-11T14:44:43.37+00:00

I have decided to wait a few weeks with my iOS project until a new Visual Studio Community 2022 version is released. Maybe my issue get solved in a newer VS version and then I don´t need to install an old VS version.
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-12T04:03:58.6066667+00:00

Visual Studio 17.14.20 has been released today—please check it out. Let me know if the issue persists after updating.
Michael Le (WICLOUD CORPORATION) 5,930 Reputation points Microsoft External Staff Moderator

2025-11-18T10:18:45.1366667+00:00

Hello @Kim Strasser , have you been able to resolve the problem? If you're still encountering issues, please don't hesitate to reach out.
Harry Vo (WICLOUD CORPORATION) 3,505 Reputation points Microsoft External Staff Moderator

2025-11-25T08:29:35.14+00:00

Hi @Kim Strasser , do you have any update yet?
Kim Strasser 1,671 Reputation points

2025-12-03T13:43:21.0933333+00:00

I have installed Visual Studio 17.14.21 and I still get the error IL Trimmer has encountered an unexpected error.

Then I have installed Visual Studio Community 2026 Version 18.0.2 and I get this error when I try to build my iOS project in Release mode:

Error loading 'bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist': Could not find file 'C:\ProjectTestVSInsiders\ProjectiOS\ProjectiOS\bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist'.

My csproj:

<Project Sdk="Microsoft.NET.Sdk"> <PropertyGroup> <TargetFramework>net10.0-ios</TargetFramework> <OutputType>Exe</OutputType> <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion> <ApplicationVersion>1.2</ApplicationVersion> <ApplicationDisplayVersion>1.2</ApplicationDisplayVersion> <CodesignKey>iPhone Distribution: Kim Strasser (...)</CodesignKey> <CodesignProvision>Project iOS Profile Distribution</CodesignProvision> <ProvisioningType>manual</ProvisioningType> </PropertyGroup> <PropertyGroup Condition="'$(TargetFramework)'=='net10.0-ios' And '$(Configuration)'=='Debug'"> <MtouchLink>None</MtouchLink>  <EnableAssemblyILStripping>False</EnableAssemblyILStripping> </PropertyGroup> <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'"> <CreatePackage>true</CreatePackage> <MtouchLink>SdkOnly</MtouchLink> <DebugType>portable</DebugType> <MtouchDebug>true</MtouchDebug> <Optimize>true</Optimize> <UseLlvm>false</UseLlvm> <MtouchExtraArgs>--enable-detailed-crash-reports</MtouchExtraArgs> <MtouchUseLlvm>False</MtouchUseLlvm> </PropertyGroup>

Answer 1

Michael Le (WICLOUD CORPORATION) 5,930 Microsoft External Staff Moderator

Hello @Kim Strasser ,

Please try this streamlined setup in your .csproj file. I have cleaned up a few conflicting settings (like the duplicate LLVM properties) and set the linker to None for the Release configuration.

Close Visual Studio.
Manually delete the bin and obj folders in your project directory.
Replace your .csproj content with the XML below.
Open the project and try to build again.

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net10.0-ios</TargetFramework>
    <OutputType>Exe</OutputType>
    <SupportedOSPlatformVersion>15.0</SupportedOSPlatformVersion>
  </PropertyGroup>

  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
    <MtouchLink>SdkOnly</MtouchLink>
    <DebugType>portable</DebugType>
    <MtouchDebug>true</MtouchDebug>
    <CodesignKey>iPhone Developer</CodesignKey>
    <CodesignProvision>Project iOS Profile Development</CodesignProvision>
  </PropertyGroup>

  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <CreatePackage>true</CreatePackage>
    <!-- Set Link to None to prevent the original crash and build errors -->
    <MtouchLink>None</MtouchLink> 
    <DebugType>portable</DebugType>
    <MtouchDebug>true</MtouchDebug>
    <Optimize>true</Optimize>
    <UseLlvm>false</UseLlvm>
    <CodesignKey>iPhone Distribution</CodesignKey>
    <CodesignProvision>Project iOS Profile Distribution</CodesignProvision>
  </PropertyGroup>

  <!-- Your ItemGroups remain the same -->
</Project>

If the build still fails after cleaning the project and settings, please try creating a brand new, empty .NET 10 iOS project (File > New Project) and see if that builds and deploys to your device.

If the empty project works: The issue is definitely inside your specific project code or one of your NuGet packages (like PlayFabAllSDK or MonoGame). You will need to add them back one by one to find the culprit.
If the empty project also fails: Your Visual Studio installation or Mac connection is corrupted. You will need to fully reinstall Visual Studio and the iOS workloads.

If you do isolate the issue to a specific bug in the SDK (like the IL Trimmer error persisting even on a clean project), the best place to get it fixed is the official GitHub repository where the engineering team tracks these defects. You can file an issue here: github.com/dotnet/maui/issues.

Also, if you post there or need further help anywhere else, please share the full build log, not just the last error line. The "Info.plist" error is usually just the final symptom; the actual cause will be buried much earlier in the log output.

Kim Strasser 1,671 Reputation points

2025-12-05T00:35:11.05+00:00
Error loading 'bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist': Could not find file 'C:\ProjectTestVSInsiders\ProjectiOS\ProjectiOS\bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist'.

I don´t get this error when I remove the following line from my csproj file:

<CreatePackage>true</CreatePackage>

I use this code in my csproj file and I have uploaded my archive to TestFlight but my application still always crashes shortly after launch on my iPad Air.

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">  <MtouchLink>None</MtouchLink> <DebugType>portable</DebugType> <MtouchDebug>true</MtouchDebug> <Optimize>true</Optimize> <UseLlvm>false</UseLlvm> <CodesignKey>iPhone Distribution</CodesignKey> <CodesignProvision>Project iOS Profile Distribution</CodesignProvision> </PropertyGroup>

Kim Strasser 1,671

Error loading 'bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist': Could not find file 'C:\ProjectTestVSInsiders\ProjectiOS\ProjectiOS\bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist'.

I don´t get this error when I remove the following line from my csproj file:

<CreatePackage>true</CreatePackage>

I have uploaded my archive to TestFlight but my application still always crashes shortly after launch on my iPad Air.

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">          <!-- Set Link to None to prevent the original crash and build errors -->     <MtouchLink>None</MtouchLink> 
    <DebugType>portable</DebugType>
    <MtouchDebug>true</MtouchDebug>
    <Optimize>true</Optimize>
    <UseLlvm>false</UseLlvm>
    <CodesignKey>iPhone Distribution</CodesignKey>
    <CodesignProvision>Project iOS Profile Distribution</CodesignProvision>
  </PropertyGroup>

Kim Strasser 1,671

Error loading 'bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist': Could not find file 'C:\ProjectTestVSInsiders\ProjectiOS\ProjectiOS\bin\Release\net10.0-ios\ios-arm64\ProjectiOS.app\Info.plist'.

I don´t get this error when I remove the following line from my csproj file:

<CreatePackage>true</CreatePackage>

I have uploaded my archive to TestFlight but my application still always crashes shortly after launch on my iPad Air.

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">          <!-- Set Link to None to prevent the original crash and build errors -->     <MtouchLink>None</MtouchLink> 
    <DebugType>portable</DebugType>
    <MtouchDebug>true</MtouchDebug>
    <Optimize>true</Optimize>
    <UseLlvm>false</UseLlvm>
    <CodesignKey>iPhone Distribution</CodesignKey>
    <CodesignProvision>Project iOS Profile Distribution</CodesignProvision>
  </PropertyGroup>

Michael Le (WICLOUD CORPORATION) 5,930 Microsoft External Staff Moderator

So far, we haven't tried to enable the Mono Interpreter yet. I recommend reading through that document for more details.

Please try this configuration:

<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <!-- Enables the interpreter -->
    <UseInterpreter>true</UseInterpreter>

    <MtouchLink>None</MtouchLink>
    <DebugType>portable</DebugType>
    <MtouchDebug>true</MtouchDebug>
    <Optimize>true</Optimize>
    <UseLlvm>false</UseLlvm>
    <CodesignKey>iPhone Distribution</CodesignKey>
    <CodesignProvision>Project iOS Profile Distribution</CodesignProvision>
</PropertyGroup>

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iOS crash report: System_Runtime_CompilerServices_AsyncMethodBuilderCore_Start_TStateMachine_GSHAREDVT_TStateMachine_GSHAREDVT_

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