Microsoft-ui-xaml: Randomly hitting 'read access violation' in CompositonVisualDiagnostics.cpp

Created on 30 Apr 2020  路  14Comments  路  Source: microsoft/microsoft-ui-xaml

Describe the bug
I've started hitting an issue where VS will constantly hit a 'read access violation' in CompositionVisualDiagnostics.cpp and it won't let me continue execution of my application even after excluding the checkbox of breaking on this type of exception.

Restarting the app/unit test app (happens in both types) doesn't resolve the issue. I need to restart Visual Studio in order to be able to resume normal execution. I had seemingly encountered this more frequently while in Mixed debugging mode, but am now seeing it in Managed debugging mode only, even with 'just my code' enabled, which is extra odd...

This is while running in debug mode. I do have other XAML files open in the VS editor, but not the active tab. It seemed to occur more often when setting a debug breakpoint in my files. Happened in two different cases, once just as the app, and again after I added a Unit Test project and started using that.

Expected behavior
No exception.

Screenshots
image

Version Info
Built-in windows controls (not referencing NuGet package)


| Windows 10 version | Saw the problem? |
| :--------------------------------- | :-------------------- |
| Insider Build (19615) | Yes |
| November 2019 Update (18363) | |
| May 2019 Update (18362) | |
| October 2018 Update (17763) | |
| April 2018 Update (17134) | |
| Fall Creators Update (16299) | |
| Creators Update (15063) | |


| Device form factor | Saw the problem? |
| :-------------------- | :------------------- |
| Desktop | Yes |
| Mobile | |
| Xbox | |
| Surface Hub | |
| IoT | |

VS info: VS 2019 16.5.4

Additional context

Unhandled exception thrown: read access violation.
this->m_spCompDiagInterop.**ptr_** was nullptr. occurred

Stack Trace:

>   Windows.UI.Xaml.dll!CompositionVisualDiagnostics::~CompositionVisualDiagnostics() Line 50   C++
    Windows.UI.Xaml.dll!CompositionVisualDiagnostics::`scalar deleting destructor'(unsigned int)    C++
    Windows.UI.Xaml.dll!Microsoft::WRL::Details::RuntimeClassImpl<Microsoft::WRL::RuntimeClassFlags<2>,1,0,0,Windows::UI::Composition::ICompositionTreeChangedDiagnostics>::Release() Line 1588 C++
    Windows.UI.Xaml.dll!Microsoft::WRL::ComPtr<Windows::Foundation::Collections::IVector<Windows::UI::Composition::Scenes::SceneNode *>>::InternalRelease() Line 235    C++
    [Inline Frame] Windows.UI.Xaml.dll!Microsoft::WRL::ComPtr<CompositionVisualDiagnostics>::{dtor}() Line 290  C++
    Windows.UI.Xaml.dll!Microsoft::WRL::Details::MakeAndInitialize<CompositionVisualDiagnostics,CompositionVisualDiagnostics>(CompositionVisualDiagnostics * * result) Line 2480    C++
    [Inline Frame] Windows.UI.Xaml.dll!Microsoft::WRL::Details::MakeAndInitialize(Microsoft::WRL::Details::ComPtrRef<Microsoft::WRL::ComPtr<CompositionVisualDiagnostics>>) Line 2488   C++
    Windows.UI.Xaml.dll!CompositionVisualDiagnostics::Create(CompositionVisualDiagnostics * * ppInstance) Line 20   C++
    Windows.UI.Xaml.dll!XamlDiagnostics::CreateCompVisualDiag() Line 67 C++
    Windows.UI.Xaml.dll!XamlDiagnostics::AdviseVisualTreeChange(IVisualTreeServiceCallback * pCallback) Line 247    C++
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!11048e57()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll![Frames below may be incorrect and/or missing, no symbols loaded for Microsoft.VisualStudio.DesignTools.UwpTap.dll]   Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!110528c0()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!11063e33()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!11056e5a()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!11059398()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!1107fda9()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!11079bd1()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!11074a4f()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!11074c15()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!1107678a()    Unknown
    Microsoft.VisualStudio.DesignTools.UwpTap.dll!110b8c20()    Unknown
    kernel32.dll!763c6739() Unknown
    ntdll.dll!771abc60()    Unknown
    ntdll.dll!771abc2a()    Unknown

If I continue execution, it continues indefinitely (as far as I was willing to keep hitting continue) and gave the same exception in the seemingly same spot. I did notice some differences in my output window:

'UnitTestProject.exe' (Win32): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\UnitTestProject.exe'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntdll.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\KernelBase.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.VCLibs.140.00.Debug_14.0.27810.0_x86__8wekyb3d8bbwe\vcruntime140_app.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreRuntime.2.2_2.2.27902.3_x86__8wekyb3d8bbwe\uwphost.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ucrtbase.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\combase.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\rpcrt4.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreRuntime.2.2_2.2.27902.3_x86__8wekyb3d8bbwe\coreclr.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\advapi32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcrt.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\sechost.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ole32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msvcp_win.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\gdi32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\win32u.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\gdi32full.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\user32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\oleaut32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\shlwapi.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\version.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\bcrypt.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\imm32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.StateRepositoryCore.dll'. Symbol loading disabled by Include/Exclude setting.
The thread 0x8f8 has exited with code 0 (0x0).
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreRuntime.2.2_2.2.27902.3_x86__8wekyb3d8bbwe\System.Private.CoreLib.dll'. 
'UnitTestProject.exe' (CoreCLR: DefaultDomain): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreRuntime.2.2_2.2.27902.3_x86__8wekyb3d8bbwe\System.Private.CoreLib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreRuntime.2.2_2.2.27902.3_x86__8wekyb3d8bbwe\clrjit.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\entrypoint\UnitTestProject.exe'. 
'UnitTestProject.exe' (Win32): Unloaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\entrypoint\UnitTestProject.exe'
'UnitTestProject.exe' (Win32): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\entrypoint\UnitTestProject.exe'. 
'UnitTestProject.exe' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\entrypoint\UnitTestProject.exe'. Symbols loaded.
'UnitTestProject.exe' (Win32): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\System.Runtime.dll'. 
'UnitTestProject.exe' (Win32): Unloaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\System.Runtime.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\System.Runtime.dll'. 
'UnitTestProject.exe' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\System.Runtime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\WinTypes.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\WinMetadata\Windows.winmd'. Module was built without symbols.
'UnitTestProject.exe' (Win32): Unloaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\WinMetadata\Windows.winmd'
'UnitTestProject.exe' (Win32): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\WinMetadata\Windows.winmd'. Module was built without symbols.
'UnitTestProject.exe' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Users\\source\repos\TokenizingTextBoxLayoutTest\UnitTestProject\bin\x86\Debug\AppX\WinMetadata\Windows.winmd'. Module was built without symbols.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\mscorlib.dll'. 
'UnitTestProject.exe' (Win32): Unloaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\mscorlib.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\mscorlib.dll'. 
'UnitTestProject.exe' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\mscorlib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.InteropServices.WindowsRuntime.dll'. 
'UnitTestProject.exe' (Win32): Unloaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.InteropServices.WindowsRuntime.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.InteropServices.WindowsRuntime.dll'. 
'UnitTestProject.exe' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.InteropServices.WindowsRuntime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\kernel.appcore.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\bcryptprimitives.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.UI.Xaml.dll'. Symbols loaded.
'UnitTestProject.exe' (Win32): Unloaded 'C:\Windows\SysWOW64\Windows.UI.Xaml.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.UI.Xaml.dll'. Symbols loaded.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\iertutil.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\twinapi.appcore.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\SHCore.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.UI.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\CoreMessaging.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\WindowManagementAPI.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\OneCoreUAPCommonProxyStub.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\uxtheme.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\urlmon.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\dxgi.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ResourcePolicyClient.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Unloaded 'C:\Windows\SysWOW64\ResourcePolicyClient.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\MrmCoreR.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Unloaded 'C:\Windows\SysWOW64\MrmCoreR.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\MrmCoreR.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.StateRepositoryClient.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\d3d11.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_529e3d8e49058c6d\igd10iumd32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ncrypt.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\ntasn1.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_529e3d8e49058c6d\igdgmm32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_529e3d8e49058c6d\igc32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\shell32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\profapi.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\DXCore.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\cfgmgr32.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\BCP47mrm.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\d2d1.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\DWrite.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\msctf.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\TextShaping.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.Shell.ServiceHostBuilder.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\execmodelproxy.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\CoreUIComponents.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\rmclient.dll'. Symbol loading disabled by Include/Exclude setting.
The thread 0x25f8 has exited with code 0 (0x0).
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\InputHost.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\UiaManager.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\CommonExtensions\Microsoft\XamlDiagnostics\x86\Microsoft.VisualStudio.DesignTools.UwpTap.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Unloaded 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\CommonExtensions\Microsoft\XamlDiagnostics\x86\Microsoft.VisualStudio.DesignTools.UwpTap.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\CommonExtensions\Microsoft\XamlDiagnostics\x86\Microsoft.VisualStudio.DesignTools.UwpTap.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.UI.Core.TextInput.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\TextInputFramework.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\Windows.UI.Immersive.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\DataExchange.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\windows.storage.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\windows.storage.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Unloaded 'C:\Windows\SysWOW64\windows.storage.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\xmllite.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Windows\SysWOW64\cryptbase.dll'. Symbol loading disabled by Include/Exclude setting.
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.WindowsRuntime.dll'. 
'UnitTestProject.exe' (Win32): Unloaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.WindowsRuntime.dll'
'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.WindowsRuntime.dll'. 
'UnitTestProject.exe' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Runtime.WindowsRuntime.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Exception thrown at 0x096FB455 (Windows.UI.Xaml.dll) in UnitTestProject.exe: 0xC0000005: Access violation reading location 0x00000000.
Unhandled exception thrown: read access violation.
this->m_spCompDiagInterop.**ptr_** was nullptr.

Exception thrown at 0x096FB455 (Windows.UI.Xaml.dll) in UnitTestProject.exe: 0xC0000005: Access violation reading location 0x00000000.
Unhandled exception thrown: read access violation.
this->m_spCompDiagInterop.**ptr_** was nullptr.

'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Numerics.Vectors.dll'. 
'UnitTestProject.exe' (Win32): Unloaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Numerics.Vectors.dll'
Exception thrown at 0x096FB455 (Windows.UI.Xaml.dll) in UnitTestProject.exe: 0xC0000005: Access violation reading location 0x00000000.
Unhandled exception thrown: read access violation.
this->m_spCompDiagInterop.**ptr_** was nullptr.

'UnitTestProject.exe' (Win32): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Numerics.Vectors.dll'. 
Exception thrown at 0x096FB455 (Windows.UI.Xaml.dll) in UnitTestProject.exe: 0xC0000005: Access violation reading location 0x00000000.
Unhandled exception thrown: read access violation.
this->m_spCompDiagInterop.**ptr_** was nullptr.

Exception thrown at 0x096FB455 (Windows.UI.Xaml.dll) in UnitTestProject.exe: 0xC0000005: Access violation reading location 0x00000000.
Unhandled exception thrown: read access violation.
this->m_spCompDiagInterop.**ptr_** was nullptr.

'UnitTestProject.exe' (CoreCLR: CoreCLR_UWP_Domain): Loaded 'C:\Program Files\WindowsApps\Microsoft.NET.CoreFramework.Debug.2.2_2.2.28529.0_x86__8wekyb3d8bbwe\System.Numerics.Vectors.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
Exception thrown at 0x096FB455 (Windows.UI.Xaml.dll) in UnitTestProject.exe: 0xC0000005: Access violation reading location 0x00000000.
Unhandled exception thrown: read access violation.
this->m_spCompDiagInterop.**ptr_** was nullptr.
area-External
Source
picture michael-hawker
👍1

All 14 comments

This is tracked by internal bug https://microsoft.visualstudio.com/OS/_workitems/edit/26071662
@simeoncran can you please confirm this is the same issue ?

ranjeshj picture ranjeshj on 30 Apr 2020
👍1

Thanks @ranjeshj, this looks like the same issue. Is this an Insider build issue with the OS?

michael-hawker picture michael-hawker on 1 May 2020

I can confirm that is the issue. Not sure how far it escaped. It's a race condition so you can get unlucky, and turning on or off native debugging can perturb it.

simeoncran picture simeoncran on 1 May 2020

I noticed the issue doesn't seem to occur if I use the restart button after hitting it to deploy again instead of stopping and deploying again.
image

joseartrivera picture joseartrivera on 7 May 2020

I am hitting this also with WinUI 2.4.

Windows 10 Enterprise Insider Preview
Version 2004
OS Build 19624.1000
Windows Feature Experience Pack 120.10601.30.0

Exception thrown: read access violation.
this->m_spCompDiagInterop.ptr_ was nullptr. occurred
source is in compositionvisualdiagnostics.cpp

PaulaScholz picture PaulaScholz on 13 May 2020

I am also facing this issue. Using the restart button does not fix this issue for me. I am running Build 19631 (Windows Insider Fast Ring)

Ticomware picture Ticomware on 23 May 2020

@simeoncran Has this issue been resolved ? Can you share which insider build has the fix ?

ranjeshj picture ranjeshj on 27 May 2020
👍1

The issue has been resolved in the OS (internal id: 26071662 fyi).
Flighting in: 20133.1000.rs_prerelease.200519-1427

simeoncran picture simeoncran on 27 May 2020

When is this going to hit Windows Update? This is a blocker for me.

PaulaScholz picture PaulaScholz on 27 May 2020

The fix has been checked in. I don't have an exact ETA, because it still is being figured out internally, but it will be available in an upcoming flight, because it . I will update this thread as soon as that I know.

ajbennet picture ajbennet on 28 May 2020

Screenshot (9)

Still broken on the latest Insider Fast Ring build. Disabling XAML debugging is a possible workaround for the time being.

Ticomware picture Ticomware on 28 May 2020
👍1

Thanks Ticomware for proposing that workaround, I d recommend using that workaround to get unblocked. I got some clarity on when this fix will reach Insiders Fast ring and its going to be in late June, unfortunately.

ajbennet picture ajbennet on 29 May 2020

I solved the issue by moving my development to Win 10 v1909 where the issue does not appear.

PaulaScholz picture PaulaScholz on 29 May 2020
👍1

I'm still seeing this on build 19645.

duke7553 picture duke7553 on 12 Jun 2020
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