Skip to content

## Issue Description ## #9496

Open
Open
## Issue Description ###9496
Labels
C#DKThe C#DK extension is installeduntriaged

Description

@NhatHao2901
NhatHao2901
opened on Jul 3, 2026

Type: Bug

Issue Description

Steps to Reproduce

Expected Behavior

Actual Behavior

Extension version: 2.140.9
VS Code version: Code 1.127.0 (4fe60c8b1cdac1c4c174f2fb180d0d758272d713, 2026-06-30T10:52:33+02:00)
OS version: Windows_NT x64 10.0.22631
Modes:

Logs

C# log

Details 
2026-07-03 08:17:17.386 [info] Locating .NET runtime version 10.0.5
2026-07-03 08:17:17.694 [info] Dotnet path: c:\Users\Admin\AppData\Roaming\Code\User\globalStorage\ms-dotnettools.vscode-dotnet-runtime\.dotnet\10.0.9~x64~aspnetcore\dotnet.exe
2026-07-03 08:17:17.694 [info] Activating C# + C# Dev Kit...
2026-07-03 08:17:17.796 [info] info: Program[0]
2026-07-03 08:17:17.796 [info]       Server started with process ID 33080
2026-07-03 08:17:18.116 [info] [Program] Language server initialized
2026-07-03 08:17:18.117 [info] [Program] Monitoring client process 8280 for exit
2026-07-03 08:17:18.370 [info] [initialized] [Microsoft.CodeAnalysis.LanguageServer.FileBasedPrograms.FileBasedProgramsEntryPointDiscovery] Finished discovery in 'c:\HNN\API\AlphaBIM_RevitAPITemplate2025-WPF' in 6 milliseconds
2026-07-03 08:17:20.786 [info] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project C:\HNN\API\AlphaBIM_RevitAPITemplate2025-WPF\ICON.csproj loaded by C# Dev Kit
2026-07-03 08:29:27.385 [error] [workspace/symbol] [LSP] System.IO.FileNotFoundException: Could not load file or assembly 'System.Threading.Channels, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
File name: 'System.Threading.Channels, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'
   at Microsoft.CodeAnalysis.Threading.ProducerConsumer`1.RunParallelAsync[TSource,TArgs](IAsyncEnumerable`1 source, Func`5 produceItems, Func`4 consumeItems, TArgs args, CancellationToken cancellationToken) in /_/src/Dependencies/Threading/ProducerConsumer.cs:line 146
   at Microsoft.CodeAnalysis.Threading.ProducerConsumer`1.RunParallelAsync[TSource,TArgs](IAsyncEnumerable`1 source, Func`5 produceItems, Func`4 consumeItems, TArgs args, CancellationToken cancellationToken) in /_/src/Dependencies/Threading/ProducerConsumer.cs:line 146
   at Microsoft.CodeAnalysis.NavigateTo.AbstractNavigateToSearchService.SearchProjectsInCurrentProcessAsync(ImmutableArray`1 projects, ImmutableArray`1 priorityDocuments, String searchPattern, IImmutableSet`1 kinds, Func`4 onItemsFound, Func`1 onProjectCompleted, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/NavigateTo/AbstractNavigateToSearchService.NormalSearch.cs:line 210
   at Microsoft.CodeAnalysis.NavigateTo.AbstractNavigateToSearchService.SearchProjectsAsync(Solution solution, ImmutableArray`1 projects, ImmutableArray`1 priorityDocuments, String searchPattern, IImmutableSet`1 kinds, Document activeDocument, Func`2 onResultsFound, Func`1 onProjectCompleted, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/NavigateTo/AbstractNavigateToSearchService.NormalSearch.cs:line 184
   at Microsoft.CodeAnalysis.NavigateTo.NavigateToSearcher.<>c__DisplayClass24_0.<<ProcessOrderedProjectsAsync>g__SearchCoreAsync|0>d.MoveNext() in /_/src/Features/Core/Portable/NavigateTo/NavigateToSearcher.cs:line 384
--- End of stack trace from previous location ---
   at System.Threading.Tasks.Parallel.<>c__53`1.<<ForEachAsync>b__53_0>d.MoveNext()
--- End of stack trace from previous location ---
   at Microsoft.CodeAnalysis.NavigateTo.NavigateToSearcher.ProcessOrderedProjectsAsync(Boolean parallel, ImmutableArray`1 orderedProjects, HashSet`1 seenResults, Func`5 processProjectAsync, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/NavigateTo/NavigateToSearcher.cs:line 370
   at Microsoft.CodeAnalysis.NavigateTo.NavigateToSearcher.SearchSpecificProjectsAsync(Boolean isFullyLoaded, NavigateToDocumentSupport documentSupport, ImmutableArray`1 orderedProjects, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/NavigateTo/NavigateToSearcher.cs:line 255
   at Microsoft.CodeAnalysis.NavigateTo.NavigateToSearcher.SearchAllProjectsAsync(Boolean isFullyLoaded, NavigateToDocumentSupport documentSupport, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/NavigateTo/NavigateToSearcher.cs:line 226
   at Microsoft.CodeAnalysis.NavigateTo.NavigateToSearcher.SearchAsync(NavigateToSearchScope searchScope, NavigateToDocumentSupport documentSupport, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/NavigateTo/NavigateToSearcher.cs:line 149
   at Microsoft.CodeAnalysis.NavigateTo.NavigateToSearcher.SearchAsync(NavigateToSearchScope searchScope, NavigateToDocumentSupport documentSupport, CancellationToken cancellationToken) in /_/src/Features/Core/Portable/NavigateTo/NavigateToSearcher.cs:line 180
   at Microsoft.CodeAnalysis.LanguageServer.Handler.WorkspaceSymbolsHandler.HandleRequestAsync(WorkspaceSymbolParams request, RequestContext context, CancellationToken cancellationToken) in /_/src/LanguageServer/Protocol/Handler/Symbols/WorkspaceSymbolsHandler.cs:line 68
   at Microsoft.CommonLanguageServerProtocol.Framework.QueueItem`1.StartRequestAsync[TRequest,TResponse](TRequest request, TRequestContext context, IMethodHandler handler, CancellationToken cancellationToken) in /_/src/LanguageServer/Microsoft.CommonLanguageServerProtocol.Framework/QueueItem.cs:line 192
2026-07-03 08:29:27.389 [error] Request workspace/symbol failed.
  Message: Could not load file or assembly 'System.Threading.Channels, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
  Code: -32000 
[object Object]

C# LSP Trace Logs log

Details

Environment Information

VSCode version: 1.127.0
C# Extension: 2.140.9
Using OmniSharp: false

Dotnet Information .NET SDK: Version: 9.0.305 Commit: 3fc74f3529 Workload version: 9.0.300-manifests.6fcb754b MSBuild version: 17.14.21+8929ca9e3

Runtime Environment:
OS Name: Windows
OS Version: 10.0.22631
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\9.0.305\

.NET workloads installed:
There are no installed workloads to display.
Configured to use loose manifests when installing new manifests.

Host:
Version: 9.0.9
Architecture: x64
Commit: 893c2ebbd4

.NET SDKs installed:
8.0.412 [C:\Program Files\dotnet\sdk]
9.0.305 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.18 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.20 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.18 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.20 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.18 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.20 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.9 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

Visual Studio Code Extensions
Extension Author Version Folder Name
autodocstring njpwerner 0.6.1 njpwerner.autodocstring-0.6.1
black-formatter ms-python 2026.6.0 ms-python.black-formatter-2026.6.0
chatgpt openai 26.623.101609 openai.chatgpt-26.623.101609-win32-x64
csdevkit ms-dotnettools 3.20.199 ms-dotnettools.csdevkit-3.20.199-win32-x64
csharp ms-dotnettools 2.140.9 ms-dotnettools.csharp-2.140.9-win32-x64
debugpy ms-python 2026.6.0 ms-python.debugpy-2026.6.0-win32-x64
intellicode-api-usage-examples VisualStudioExptTeam 0.2.9 visualstudioexptteam.intellicode-api-usage-examples-0.2.9
java redhat 1.55.0 redhat.java-1.55.0-win32-x64
material-icon-theme PKief 5.36.1 pkief.material-icon-theme-5.36.1
material-theme zhuangtongfa 3.19.0 zhuangtongfa.material-theme-3.19.0
migrate-java-to-azure vscjava 1.21.0 vscjava.migrate-java-to-azure-1.21.0-win32-x64
python ms-python 2026.4.0 ms-python.python-2026.4.0-win32-x64
vscode-dotnet-modernize ms-dotnettools 1.0.1157 ms-dotnettools.vscode-dotnet-modernize-1.0.1157
vscode-dotnet-runtime ms-dotnettools 3.1.0 ms-dotnettools.vscode-dotnet-runtime-3.1.0
vscode-gradle vscjava 3.17.3 vscjava.vscode-gradle-3.17.3
vscode-java-debug vscjava 0.59.0 vscjava.vscode-java-debug-0.59.0
vscode-java-dependency vscjava 0.27.6 vscjava.vscode-java-dependency-0.27.6
vscode-java-pack vscjava 0.31.1 vscjava.vscode-java-pack-0.31.1
vscode-java-test vscjava 0.46.0 vscjava.vscode-java-test-0.46.0
vscode-java-upgrade vscjava 1.7.0 vscjava.vscode-java-upgrade-1.7.0
vscode-maven vscjava 0.45.3 vscjava.vscode-maven-0.45.3
vscode-pylance ms-python 2026.2.1 ms-python.vscode-pylance-2026.2.1
vscode-python-envs ms-python 1.36.0 ms-python.vscode-python-envs-1.36.0-win32-x64
vscodeintellicode VisualStudioExptTeam 1.3.2 visualstudioexptteam.vscodeintellicode-1.3.2
C# Settings
Setting Value
preferCSharpExtension false
compilerDiagnosticScope openFiles
analyzerDiagnosticScope openFiles
enableXamlTools true
useServerGC true
System Info
Item Value
CPUs Intel(R) Core(TM) i9-14900KF (32 x 3187)
GPU Status 2d_canvas: enabled
GPU0: VENDOR= 0x10de, DEVICE=0x2487 [NVIDIA GeForce RTX 3060], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.7628 ACTIVE
GPU1: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.22621.3672
Machine model name:
Machine model version:
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgpu: enabled
webnn: disabled_off
Load (avg) undefined
Memory (System) 63.79GB (40.23GB free)
Process Argv --crash-reporter-id 187d510c-a71b-4f07-b42c-94754cf062df
Screen Reader no
VM 0%
A/B Experiments 
vsliv368:30146709
vswsl492cf:30256860
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
6abeh943:31336334
envsactivate1:31538736
gh487529:31544284
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ddidt:31399633
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
8hhj4413:31478653
38bie571_auto:31426784
cp_cls_c_1081:31454833
conptydll_true:31498968
ia-use-proxy-models-svc:31452481
e9c30283:31461165
test_treatment2:31471001
c9b86496:31447327
idci7584:31464702
e3e4d672:31494082
ei9d7968:31496641
chat:31457767
8hig5102:31480529
89g7j272:31518289
7e187181:31503455
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
ddid_c:31478207
hmra_i5g22:31518061
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
db5d2638:31499441
jb_cp_cls_t_632:31543129
852d2892:31506239
748c7209:31512887
32d76977:31512328
ha629193:31508444
cdk-lw-on:31524445
f9bf7985:31543584
2cfga817_c:31522397
a1ije391_t:31540920
8hfba999:31537718
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31533504
gf14b233:31526830
nes-curr-leftover-1500:31538366
h561g132:31533256
sessions_5:31532894
h7dd7680:31543284
ihg5j128:31534457
7g2b5551:31542111
nes-ex-cf-euporie-03:31542868
nes-nc-rv-1k-lc-2k:31544183

Metadata

Metadata

Assignees

No one assigned

    Labels

    C#DKThe C#DK extension is installeduntriaged

    Type

    No type

    Fields

    No fields configured for issues without a type.

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions