C# IntelliSense doesn't work

Type: Bug

I used to get C# intellisense for my projects, but it no longer appears.

VS Code version: Code 1.83.0 (e7e037083ff4455cf320e344325dacb480062c3c, 2023-10-03T16:13:15.449Z) OS version: Darwin x64 23.0.0 Modes:

System Info

|Item|Value| |---|---| |CPUs|Intel(R) Xeon(R) W-2150B CPU @ 3.00GHz (20 x 3000)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: disabled_off
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
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled| |Load (avg)|1, 2, 2| |Memory (System)|32.00GB (12.29GB free)| |Process Argv|. --crash-reporter-id 37e095d3-0123-4076-a4a2-4b2151a4e5e9| |Screen Reader|no| |VM|0%|

Extensions (76)

Extension|Author (truncated)|Version ---|---|--- racket|Dmy|1.2.0 alexa-skills-kit-toolkit|ask|2.15.0 spellright|ban|3.0.118 yacc|car|1.3.1 gltf-vscode|ces|2.4.0 doxdocgen|csc|1.4.0 binary-plist|dni|0.11.3 prettier-vscode|esb|10.1.0 esp-idf-extension|esp|1.6.4 vs-code-xml-format|fab|0.1.5 copilot|Git|1.123.471 copilot-chat|Git|0.8.0 vscode-github-actions|git|0.26.2 vscode-pull-request-github|Git|0.74.0 vscode-graphql|Gra|0.8.19 vscode-graphql-execution|Gra|0.2.4 vscode-graphql-syntax|Gra|1.2.2 vscode-power-mode|hoo|3.0.2 ilspy-vscode|ics|0.16.1 Ionide-fsharp|Ion|7.13.0 better-cpp-syntax|jef|1.17.2 copy-markdown-as-html|jer|1.1.0 cmake-language-support-vscode|jos|0.0.9 vscode-cudacpp|kri|0.1.1 bison|lun|0.1.0 ninja-syntax|mel|1.0.0 fsharp-fsl-fsy|mnx|0.0.1 vscode-docker|ms-|1.26.1 csharp|ms-|2.5.30 vscode-dotnet-runtime|ms-|1.8.0 black-formatter|ms-|2023.5.12771008 isort|ms-|2023.10.1 python|ms-|2023.18.0 vscode-pylance|ms-|2023.10.10 jupyter|ms-|2023.9.1102792234 jupyter-keymap|ms-|1.1.2 jupyter-renderers|ms-|1.0.17 vscode-jupyter-cell-tags|ms-|0.1.8 vscode-jupyter-slideshow|ms-|0.1.5 remote-containers|ms-|0.315.1 remote-ssh|ms-|0.106.5 remote-ssh-edit|ms-|0.86.0 remote-wsl|ms-|0.81.7 cmake-tools|ms-|1.15.31 cpptools|ms-|1.17.5 cpptools-extension-pack|ms-|1.3.0 hexeditor|ms-|1.9.12 live-server|ms-|0.4.11 mono-debug|ms-|0.16.3 remote-explorer|ms-|0.4.1 vscode-serial-monitor|ms-|0.10.0 vsliveshare|ms-|1.0.5883 ufmt|omn|2023.4.3 vscode-jest|Ort|5.2.3 vscode-nuget-gallery|pat|0.0.24 wgsl|Pol|0.1.16 java|red|1.23.0 llvm|RRe|0.1.1 partial-diff|ryu|1.4.3 modelica|Sim|0.0.4 fish-vscode|sky|0.2.1 shader|sle|1.1.5 urdf|smi|0.3.0 cmake|twx|0.0.17 nisaba|UCL|1.4.1 intellicode-api-usage-examples|Vis|0.2.8 vscodeintellicode|Vis|1.2.30 vscode-arduino|vsc|0.6.0 vscode-java-debug|vsc|0.54.0 vscode-java-dependency|vsc|0.23.1 vscode-java-pack|vsc|0.25.14 vscode-java-test|vsc|0.40.0 vscode-maven|vsc|0.42.0 vscode-cil-complete|wk-|0.0.5 material-theme|zhu|3.16.0 vscode-proto3|zxh|0.5.5 (3 theme extensions excluded)

A/B Experiments

``` vsliv368cf:30146710 vsreu685:30147344 python383:30185418 vspor879:30202332 vspor708:30202333 vspor363:30204092 vslsvsres303:30308271 vserr242cf:30382550 pythontb:30283811 vsjup518:30340749 pythonptprofiler:30281270 vshan820:30294714 vstes263cf:30335440 vscoreces:30445986 vscod805:30301674 binariesv615:30325510 bridge0708:30335490 bridge0723:30353136 vsaa593cf:30376535 pythonvs932:30410667 py29gd2263:30792226 vsclangdf:30486550 c4g48928:30535728 dsvsc012cf:30540253 pynewext54:30695312 azure-dev_surveyone:30548225 3biah626:30602489 89544117:30613380 2i9eh265:30646982 showlangstatbar:30737416 03d35959:30757346 pythonfmttext:30731395 fixshowwlkth:30771522 showindicator:30805244 pythongtdpath:30769146 i26e3531:30792625 pythonnosmt12:30797651 pythonidxptcf:30805731 pythonnoceb:30805159 copilotsettingc:30839828 synctok:30821570 dsvsc013:30795093 dsvsc014:30804076 diffeditorv2:30821572 pythonmpsinfo:30842941 dsvsc015:30845448 ```

microsoft / vscode

C# IntelliSense doesn't work #195104