# Julia + Vscode: Error while communicating with the LS, no documented solution works

**URL:** https://discourse.julialang.org/t/julia-vscode-error-while-communicating-with-the-ls-no-documented-solution-works/136215
**Category:** Tooling
**Tags:** languageserver
**Created:** [March 16, 2026, 7:39am UTC](https://discourse.julialang.org/t/julia-vscode-error-while-communicating-with-the-ls-no-documented-solution-works/136215 "2026-03-16T07:39:24Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![MarkusGabl](https://avatars.discourse-cdn.com/v4/letter/m/d9b06d/32.png) [@MarkusGabl](https://discourse.julialang.org/u/MarkusGabl)
#### Post date: [March 16, 2026, 7:39am UTC](https://discourse.julialang.org/t/julia-vscode-error-while-communicating-with-the-ls-no-documented-solution-works/136215/1 "2026-03-16T07:39:24Z")

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When I use SHIFT+ENTER to execute a command in the editor, I get the Error message:  
“Error while communicating with the LS. Check Output \> Julia Language Server for additional information.”

After toggling “Print code in REPL”, if I mark the entire line I want to execute and press SHIFT+ENTER, the line executes perfectly well. But this is cumbersome. A related post suggested running “juliaup add release”, but juliaup triggers an “Undef” Error.

Is there anything I can do?

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### Author: ![ufechner7](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ufechner7/32/51363_2.png) [@ufechner7](https://discourse.julialang.org/u/ufechner7)
#### Post date: [March 16, 2026, 7:50am UTC](https://discourse.julialang.org/t/julia-vscode-error-while-communicating-with-the-ls-no-documented-solution-works/136215/2 "2026-03-16T07:50:08Z")

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> [@MarkusGabl](#):
>
> Is there anything I can do?

Reinstall juliaup?

On Linux:

```bash
rm -rf .juliaup
curl -fsSL https://install.julialang.org | sh

```

`juliaup add release` must work.

```bash
ufechner@ufryzen:~$ juliaup add release
    Checking for new Julia versions
'release' is already installed.

```

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### Author: ![pfitzseb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pfitzseb/32/45566_2.png) [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)
#### Post date: [March 16, 2026, 8:04am UTC](https://discourse.julialang.org/t/julia-vscode-error-while-communicating-with-the-ls-no-documented-solution-works/136215/3 "2026-03-16T08:04:57Z")

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> [@MarkusGabl](#):
>
> Check Output \> Julia Language Server for additional information.

So what does that say?