Error connecting to the language server

[helmut-hackl]

Type: Bug

Issue Description

Starting VSCode with a newly generated C# console app and the C# and the C# Dev Kit installed leads to the following error:

Using dotnet configured on PATH
Dotnet path: C:\Program Files\dotnet\dotnet.exe
Activating C# + C# Dev Kit + C# IntelliCode...
waiting for named pipe information from server...
[stdout] {"pipeName":"\\.\pipe\f2903b47"}
received named pipe information from server
attempting to connect client to server...
[Error - 2:10:49 PM] Microsoft.CodeAnalysis.LanguageServer client: couldn't create connection to server.
Error: Timeout. Client cound not connect to server via named pipe: \.\pipe\f2903b47
at q. (c:\Users\001429753.vscode\extensions\ms-dotnettools.csharp-2.15.30-win32-x64\dist\extension.js:2:1291107)
at Generator.next ()
at s (c:\Users\001429753.vscode\extensions\ms-dotnettools.csharp-2.15.30-win32-x64\dist\extension.js:2:1280740)

Steps to Reproduce

Occurs at every start

Expected Behavior

Connect to language server via named pipe

Actual Behavior

Does not connect, runs into timeout

Logs

C# log

C# LSP Trace Logs

Environment information

VSCode version: 1.86.0
C# Extension: 2.15.30
Using OmniSharp: false

Dotnet Information

.NET SDK: Version: 8.0.200-preview.23624.5 Commit: 8065b9770c Workload version: 8.0.200-manifests.66f5ce51

Runtime Environment:
OS Name: Windows
OS Version: 10.0.22631
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.200-preview.23624.5\

.NET workloads installed:
Workload version: 8.0.200-manifests.66f5ce51
[maui-windows]
Installation Source: VS 17.8.34511.84, VS 17.9.34511.98
Manifest Version: 8.0.3/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.maui\8.0.3\WorkloadManifest.json
Install Type: Msi

[maccatalyst]
Installation Source: VS 17.8.34511.84, VS 17.9.34511.98
Manifest Version: 17.2.8004/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.maccatalyst\17.2.8004\WorkloadManifest.json
Install Type: Msi

[ios]
Installation Source: VS 17.8.34511.84, VS 17.9.34511.98
Manifest Version: 17.2.8004/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.ios\17.2.8004\WorkloadManifest.json
Install Type: Msi

[android]
Installation Source: VS 17.8.34511.84, VS 17.9.34511.98
Manifest Version: 34.0.52/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.android\34.0.52\WorkloadManifest.json
Install Type: Msi

[aspire]
Installation Source: VS 17.9.34511.98
Manifest Version: 8.0.0-preview.1.23557.2/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.0.0-preview.1.23557.2\WorkloadManifest.json
Install Type: Msi

Host:
Version: 8.0.1
Architecture: x64
Commit: bf5e279d92

.NET SDKs installed:
8.0.101 [C:\Program Files\dotnet\sdk]
8.0.200-preview.23624.5 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.16 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.26 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.0 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.1 [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
csdevkit	ms-dotnettools	1.3.10	ms-dotnettools.csdevkit-1.3.10-win32-x64
csharp	ms-dotnettools	2.15.30	ms-dotnettools.csharp-2.15.30-win32-x64
powershell	ms-vscode	2024.0.0	ms-vscode.powershell-2024.0.0
rest-client	humao	0.25.1	humao.rest-client-0.25.1
vscode-dotnet-runtime	ms-dotnettools	2.0.1	ms-dotnettools.vscode-dotnet-runtime-2.0.1
vscodeintellicode-csharp	ms-dotnettools	0.1.26	ms-dotnettools.vscodeintellicode-csharp-0.1.26-win32-x64

Extension version: 2.15.30
VS Code version: Code 1.86.0 (05047486b6df5eb8d44b2ecd70ea3bdf775fd937, 2024-01-31T10:28:19.990Z)
OS version: Windows_NT x64 10.0.22631
Modes:

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz (8 x 2803)
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
Load (avg)	undefined
Memory (System)	23.73GB (11.90GB free)
Process Argv	--crash-reporter-id f1f183bb-8241-4071-8770-73d9ca064142
Screen Reader	no
VM	0%

A/B Experiments

vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vscoreces:30445986
vscod805:30301674
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:30899288
c4g48928:30535728
azure-dev_surveyone:30548225
a9j8j154:30646983
962ge761:30959799
pythongtdpath:30769146
pythonidxpt:30866567
pythonnoceb:30805159
asynctok:30898717
pythontestfixt:30902429
pythonregdiag2:30936856
pyreplss1:30897532
pythonmypyd1:30879173
pythoncet0:30885854
pythontbext0:30879054
dsvsc016:30899300
dsvsc017:30899301
dsvsc018:30899302
pydisww2:30959801
dsvsc019b:30953937
8082a590:30958339
b5d27386:30958190
3ef8e399:30949928
bg6jg535:30958357

[dibarbet]

One thing to try - if you increase the connection timeout by updating the dotnet.server.startTimeout in vscode settings to something like 60000 (or even higher), does it work?

[dibarbet]

Closing, this is almost certainly a duplicate of #6842. If this still reproduces on the latest versions of the extension, feel free to re-open and include the latest logs.