dotnet
Go to definition of project reference goes to decompiled output rather than the source
Type: Bug
Issue Description
I have a large solution with multiple csprojects that reference eachother. When I click go to definition on a type defined in a referenced project I get a decompiled view. This issue is persisting since the very creation of c# dev kit and it is still persisting in this solution for me. Debugging steps that I already checked:
- A clean new solution => everything works fine with a clean solution
- VS 2022 => in Visual Studio go to references works fine
Steps to Reproduce
You will probably not be able to reproduce this, as I couldn't either in a new solution. I would be down to assist in debugging.
Expected Behavior
Go to definition goes to the source file of the referenced project.
Actual Behavior
Go to definition launches decompiled view of class.
Logs
C# log
2025-08-13 12:04:40.601 [info] Locating .NET runtime version 9.0.1 2025-08-13 12:04:40.617 [info] Dotnet path: C:\Program Files\dotnet\dotnet.exe 2025-08-13 12:04:40.617 [info] Activating C# standalone... 2025-08-13 12:04:46.757 [info] [stdout] {"pipeName":"\\.\pipe\a381f588"}
2025-08-13 12:04:46.757 [info] received named pipe information from server 2025-08-13 12:04:46.759 [info] client has connected to server 2025-08-13 12:04:48.113 [info] [Info - 12:04:48 PM] [Program] Language server initialized 2025-08-13 12:04:51.312 [info] [Info - 12:04:51 PM] [solution/open] [LanguageServerProjectSystem] Loading d:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-backend.sln... 2025-08-13 12:04:59.371 [info] [Info - 12:04:59 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\ExtenDotNet\ExtenDotNet\ExtenDotNet.csproj 2025-08-13 12:05:07.406 [info] Detected new installation of ms-dotnettools.csdevkit 2025-08-13 12:05:09.182 [info] [Info - 12:05:09 PM] Shutting down 2025-08-13 12:05:09.190 [info] Dotnet path: C:\Program Files\dotnet\dotnet.exe 2025-08-13 12:05:09.190 [info] Activating C# + C# Dev Kit... 2025-08-13 12:05:09.757 [info] Language server process exited with 0 2025-08-13 12:05:10.203 [info] [stdout] fail: Microsoft.CodeAnalysis.Remote.ExportProviderBuilder[0] c:\Users\up.vscode\extensions\ms-dotnettools.csharp-2.76.27-win32-x64.razorExtension\Microsoft.VisualStudioCode.RazorExtension.dll with assembly name Microsoft.VisualStudioCode.RazorExtension, Version=10.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60 conflicts with extension loaded from c:\Users\up.vscode\extensions\ms-dotnettools.csharp-2.76.27-win32-x64.razorExtension
2025-08-13 12:05:14.965 [info] [stdout] {"pipeName":"\\.\pipe\50748d1b"}
2025-08-13 12:05:14.965 [info] received named pipe information from server 2025-08-13 12:05:14.966 [info] client has connected to server 2025-08-13 12:05:15.136 [info] [Info - 12:05:15 PM] [Program] Language server initialized 2025-08-13 12:05:16.113 [info] [Info - 12:05:16 PM] [solution/open] [LanguageServerProjectSystem] Loading d:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-backend.sln... 2025-08-13 12:05:29.375 [info] [Info - 12:05:29 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\cs2ts\cs2ts\cs2ts.csproj 2025-08-13 12:05:32.826 [info] [Info - 12:05:32 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\bitrix-opr\bitrix-opr.csproj 2025-08-13 12:05:33.776 [info] [Info - 12:05:33 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\officedoc-creator\officedoc-creator\officedoc-creator.csproj 2025-08-13 12:05:34.096 [info] [Info - 12:05:34 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\ConfigFramework\ConfigFramework.csproj 2025-08-13 12:05:34.300 [info] [Info - 12:05:34 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\cs2ts\cs2tsShared\cs2tsShared.csproj 2025-08-13 12:05:34.626 [info] [Info - 12:05:34 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\ExtenDotNet\ExtenDotNet\ExtenDotNet.csproj 2025-08-13 12:05:34.747 [info] [Info - 12:05:34 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-publish\myproject-publish.csproj loaded by C# Dev Kit 2025-08-13 12:05:35.602 [info] [Info - 12:05:35 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\netcorehostedservice\NetCoreHostedService\NetCoreHostedService.csproj 2025-08-13 12:05:35.602 [info] [Info - 12:05:35 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\JsonCfg.Net\JsonCfg.Net\JsonCfg.Net.csproj 2025-08-13 12:05:35.603 [info] [Info - 12:05:35 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\SourceGenerators\SourceGenerators.csproj 2025-08-13 12:05:35.603 [info] [Info - 12:05:35 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\netcorehostedservice\NetCoreHostedService\NetCoreHostedService.csproj loaded by C# Dev Kit 2025-08-13 12:05:35.619 [info] [Info - 12:05:35 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\JsonCfg.Net\JsonCfg.Net\JsonCfg.Net.csproj loaded by C# Dev Kit 2025-08-13 12:05:35.836 [info] [Info - 12:05:35 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\ConfigFramework\ConfigFramework.csproj loaded by C# Dev Kit 2025-08-13 12:05:35.839 [info] [Info - 12:05:35 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\ExtenDotNet\ExtenDotNet\ExtenDotNet.csproj loaded by C# Dev Kit 2025-08-13 12:05:36.372 [info] [Info - 12:05:36 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-backend\myproject-backend.csproj loaded by C# Dev Kit 2025-08-13 12:05:36.373 [info] [Info - 12:05:36 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-tests\myproject-tests.csproj loaded by C# Dev Kit 2025-08-13 12:05:36.645 [info] [Info - 12:05:36 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-cli\myproject-cli.csproj loaded by C# Dev Kit 2025-08-13 12:05:36.785 [info] [Info - 12:05:36 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\officedoc-creator\officedoc-creator\officedoc-creator.csproj loaded by C# Dev Kit 2025-08-13 12:05:36.786 [info] [Info - 12:05:36 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-common\myproject-common.csproj loaded by C# Dev Kit 2025-08-13 12:05:36.990 [info] [Info - 12:05:36 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\cs2ts\cs2tsShared\cs2tsShared.csproj loaded by C# Dev Kit 2025-08-13 12:05:37.037 [info] [Info - 12:05:37 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\bitrix-opr\bitrix-opr.csproj loaded by C# Dev Kit 2025-08-13 12:05:37.038 [info] [Info - 12:05:37 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\SourceGenerators\SourceGenerators.csproj loaded by C# Dev Kit 2025-08-13 12:05:37.134 [info] [Info - 12:05:37 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\cs2ts\cs2ts\cs2ts.csproj loaded by C# Dev Kit 2025-08-13 12:05:50.781 [info] [Info - 12:05:50 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-publish\myproject-publish.csproj 2025-08-13 12:05:50.890 [info] [Info - 12:05:50 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-common\myproject-common.csproj 2025-08-13 12:05:50.974 [info] [Info - 12:05:50 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-cli\myproject-cli.csproj 2025-08-13 12:05:52.700 [info] [Info - 12:05:52 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-tests\myproject-tests.csproj 2025-08-13 12:05:52.871 [info] [Info - 12:05:52 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\myproject-backend\myproject-backend.csproj 2025-08-13 12:05:52.871 [info] [Info - 12:05:52 PM] [solution/open] [LanguageServerProjectLoader] Completed (re)load of all projects in 00:00:35.5921723
C# LSP Trace Logs
Environment information
VSCode version: 1.102.3 C# Extension: 2.76.27 Using OmniSharp: false
Dotnet Information
.NET SDK: Version: 9.0.304 Commit: f12f5f689e Workload version: 9.0.300-manifests.ad61bb1c MSBuild version: 17.14.16+5d8159c5fRuntime Environment: OS Name: Windows OS Version: 10.0.26100 OS Platform: Windows RID: win-x64 Base Path: C:\Program Files\dotnet\sdk\9.0.304\
.NET workloads installed: There are no installed workloads to display. Configured to use loose manifests when installing new manifests.
Host: Version: 9.0.8 Architecture: x64 Commit: aae90fa090
.NET SDKs installed: 8.0.413 [C:\Program Files\dotnet\sdk] 9.0.205 [C:\Program Files\dotnet\sdk] 9.0.304 [C:\Program Files\dotnet\sdk]
.NET runtimes installed: Microsoft.AspNetCore.App 8.0.19 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 9.0.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 8.0.19 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 9.0.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 8.0.19 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 9.0.8 [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 |
|---|---|---|---|
| angular-essentials | johnpapa | 18.0.0 | johnpapa.angular-essentials-18.0.0 |
| angular-schematics | cyrilletuzi | 6.23.0 | cyrilletuzi.angular-schematics-6.23.0 |
| Angular2 | johnpapa | 18.0.2 | johnpapa.angular2-18.0.2 |
| angular2-switcher | infinity1207 | 0.4.0 | infinity1207.angular2-switcher-0.4.0 |
| Bookmarks | alefragnani | 13.5.0 | alefragnani.bookmarks-13.5.0 |
| codealignment-vscode | cpmcgrath | 2.0.19 | cpmcgrath.codealignment-vscode-2.0.19 |
| copilot | GitHub | 1.350.0 | github.copilot-1.350.0 |
| copilot-chat | GitHub | 0.29.1 | github.copilot-chat-0.29.1 |
| csdevkit | ms-dotnettools | 1.41.11 | ms-dotnettools.csdevkit-1.41.11-win32-x64 |
| csharp | ms-dotnettools | 2.76.27 | ms-dotnettools.csharp-2.76.27-win32-x64 |
| dbcode | dbcode | 1.14.29 | dbcode.dbcode-1.14.29 |
| docker | docker | 0.14.0 | docker.docker-0.14.0-win32-x64 |
| dotnet-test-explorer | formulahendry | 0.7.8 | formulahendry.dotnet-test-explorer-0.7.8 |
| gitlens | eamodio | 17.3.4 | eamodio.gitlens-17.3.4 |
| hex-to-hsl | kavish | 0.1.1 | kavish.hex-to-hsl-0.1.1 |
| hexeditor | ms-vscode | 1.11.1 | ms-vscode.hexeditor-1.11.1 |
| jsonpath-extract | davidmarek | 1.2.3 | davidmarek.jsonpath-extract-1.2.3 |
| lorem-ipsum | Tyriar | 1.3.1 | tyriar.lorem-ipsum-1.3.1 |
| markdown-mermaid | bierner | 1.28.0 | bierner.markdown-mermaid-1.28.0 |
| markdown-pdf | yzane | 1.5.0 | yzane.markdown-pdf-1.5.0 |
| material-icon-theme | PKief | 5.25.0 | pkief.material-icon-theme-5.25.0 |
| ng-template | Angular | 20.1.1 | angular.ng-template-20.1.1 |
| nunit-test-runner | Forms | 0.3.11 | forms.nunit-test-runner-0.3.11 |
| path-intellisense | christian-kohler | 2.10.0 | christian-kohler.path-intellisense-2.10.0 |
| rainbow-csv | mechatroner | 3.20.0 | mechatroner.rainbow-csv-3.20.0 |
| remote-containers | ms-vscode-remote | 0.422.1 | ms-vscode-remote.remote-containers-0.422.1 |
| remote-explorer | ms-vscode | 0.5.0 | ms-vscode.remote-explorer-0.5.0 |
| remote-server | ms-vscode | 1.5.2 | ms-vscode.remote-server-1.5.2 |
| remote-ssh | ms-vscode-remote | 0.120.0 | ms-vscode-remote.remote-ssh-0.120.0 |
| remote-ssh-edit | ms-vscode-remote | 0.87.0 | ms-vscode-remote.remote-ssh-edit-0.87.0 |
| remote-wsl | ms-vscode-remote | 0.99.0 | ms-vscode-remote.remote-wsl-0.99.0 |
| sass-indented | syler | 1.8.33 | syler.sass-indented-1.8.33 |
| some-sass | SomewhatStationery | 4.3.0 | somewhatstationery.some-sass-4.3.0 |
| svg | jock | 1.5.4 | jock.svg-1.5.4 |
| swissarmyknife2 | b4ckup | 0.0.7 | b4ckup.swissarmyknife2-0.0.7 |
| todo-tree | Gruntfuggly | 0.0.226 | gruntfuggly.todo-tree-0.0.226 |
| vscode-containers | ms-azuretools | 2.1.0 | ms-azuretools.vscode-containers-2.1.0 |
| vscode-dotnet-runtime | ms-dotnettools | 2.3.7 | ms-dotnettools.vscode-dotnet-runtime-2.3.7 |
| vscode-eslint | dbaeumer | 3.0.16 | dbaeumer.vscode-eslint-3.0.16 |
| vscode-highlight | fabiospampinato | 1.9.0 | fabiospampinato.vscode-highlight-1.9.0 |
| vscode-icons | vscode-icons-team | 12.14.0 | vscode-icons-team.vscode-icons-12.14.0 |
| vscode-nuget-gallery | patcx | 1.2.4 | patcx.vscode-nuget-gallery-1.2.4 |
| vscode-peacock | johnpapa | 4.2.2 | johnpapa.vscode-peacock-4.2.2 |
| vscode-remote-extensionpack | ms-vscode-remote | 0.26.0 | ms-vscode-remote.vscode-remote-extensionpack-0.26.0 |
| vscode-sql-formatter | adpyke | 1.4.4 | adpyke.vscode-sql-formatter-1.4.4 |
| vscode-statusbar-json-path | richie5um2 | 2.0.0 | richie5um2.vscode-statusbar-json-path-2.0.0 |
| winteriscoming | johnpapa | 1.4.4 | johnpapa.winteriscoming-1.4.4 |
| xliff-sync | rvanbekkum | 1.5.0 | rvanbekkum.xliff-sync-1.5.0 |
| xml | DotJoshJohnson | 2.5.1 | dotjoshjohnson.xml-2.5.1 |
Extension version: 2.76.27 VS Code version: Code 1.102.3 (488a1f239235055e34e673291fb8d8c810886f81, 2025-07-29T03:00:23.339Z) OS version: Windows_NT x64 10.0.26100 Modes:
System Info
| Item | Value |
|---|---|
| CPUs | AMD Ryzen AI 7 PRO 360 w/ Radeon 880M (16 x 1996) |
| GPU Status | 2d_canvas: enabled canvas_oop_rasterization: enabled_on 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 video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off |
| Load (avg) | undefined |
| Memory (System) | 63.15GB (32.38GB free) |
| Process Argv | --crash-reporter-id 3a70d3e8-9eb1-4a73-9785-c41ead04114b |
| Screen Reader | no |
| VM | 0% |
A/B Experiments
vsliv368:30146709
vswsl492:30256859
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
6074i472:31201624
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythoneinst12:31285622
c7cif404:31314491
996jf627:31283433
pythonrdcb7:31342333
usemplatestapi:31297334
0aa6g176:31307128
747dc170:31275177
aj953862:31281341
pylancequickfixt:31358882
9d2cg352:31346308
convertlamdat:31358880
usemarketplace:31343026
nesew2to5:31336538
agentclaude:31350858
4f60g487:31327383
replacestringexc:31350595
nes-set-on:31351930
testaa123:31335226
6abeh943:31336334
yijiwantestdri0626-c:31336931
0927b901:31350571
4gdec884:31348710
45650338:31358607
0cj2b977:31352657
gaj49834:31362110
controlchatstate:31363048
A couple of initial things that would help
- Your C# extension version looks a bit old, would you mind updating to the latest release (2.87.31) and seeing if its any better?
- Can you enable trace logging and share the trace logs (see https://github.com/dotnet/vscode-csharp/blob/main/SUPPORT.md#collecting-general-logs)
- A bit of a longshot, but if you're able to share the actual solution that reproduces it, that would be extremely helpful. You can share it privately with me ([email protected]) if preferred.
I do notice something very suspicious immediately however. It looks like we're trying to load projects with both the C# standalone project loader, and CDK is also trying to load projects:
2025-08-13 12:05:29.375 [info] [Info - 12:05:29 PM] [solution/open] [LanguageServerProjectLoader] Successfully completed load of d:\Projects\myproject.opr.master\myproject\myproject-backend\lib\cs2ts\cs2ts\cs2ts.csproj
and CDK
2025-08-13 12:05:37.134 [info] [Info - 12:05:37 PM] [serviceBroker/connect] [WorkspaceProjectFactoryService] Project D:\Projects\myproject.opr.master\myproject\myproject-backend\lib\cs2ts\cs2ts\cs2ts.csproj loaded by C# Dev Kit
That is definitely a recipe for failure and should not be happening. Starting off with @jasonmalinowski to take a look here.
