VS Code does not find some classes. cs0246/cs0103

Question

Hello everyone! When I open Visual Studio Code, I get two error for some of my classes inherited from MonoBehaviour and ScriptableObject:
cs0246: The type or namespace name could not be found
For a static class:
cs0103:The name ____ does not exist in the current context.
If I open files with these classes and save them again (just "ctrl + s", nothing more), then the problems disappear. I can build the project even without resolving the problems. But if I close VS Code and open it again, I get these errors again.
All files are placed in the same folders as the files that do not arise any errors.

How can I fix it?

OS: Windows 10, 64bit
Visual Studio Code version: 1.41.1
C# extension version: 1.21.10 (C# for Visual Studio Code (powered by OmniSharp))
Unity version: 2019.3.0f6

Answer 1

Best Answer

Answer by RahulRaman · Feb 06, 2020 at 02:51 PM

Try the following steps:-

Open Unity
Open Package Manager Window
Check the version of your visual studio code package

If you are use package version 1.1.4 use the following steps to resolve the error:-

In Unity, go to Window/Package Manager
Search for your Visual Studio Code Editor package
Downgrade to version 1.1.3
Close Unity
Delete your .csproj and .sln files in your project
Open Unity
Reopen VS Code and the errors are gone

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SK0M0R0H · Feb 06, 2020 at 05:57 PM 1

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Thank you! It fixed the problem.

Akamis · Apr 14, 2020 at 05:39 PM 0

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Thanks ! The version 2.0.0 is available on beta and works as well

RudolfKorcsmarosDevelopment · Oct 28, 2020 at 01:50 PM 0

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Thank you! It fixed it.

marquizzo · Oct 30, 2020 at 04:16 AM 2

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This worked like a charm! Only thing I did differently was that instead of downgrading to 1.1.3, I upgraded to 1.2.3, which was released earlier this month... and it works. Thanks again!

LoneXUnity · Dec 21, 2020 at 09:52 AM 1

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worked for me too ! thank you

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Answer 2

Answer by stack86 · Oct 14, 2020 at 03:33 AM

I'm on Unity 2019.4.11f1 and package 1.2.2 and randomly had issues today where only one csproj was working at a time, anything from other namespaces from other csproj files were not being recognised. I followed these steps, downgraded and deleted the .sln and now it's working normally again. Thank you

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Answer 3

Answer by MohammedOmarPF · Nov 24, 2020 at 10:05 PM

Awesome! Today November 24th, 2020 I had the same issue with Unity 2019.4.13 (LTS) and Visual Studio Code Package (v 1.2.2) Instead of downgrading to 1.1.3, there was an update for v 1.2.3

I followed the steps of upgrading the package, closing unity, deleting the sln and csproj, then openeing Unity and vscode and it WORKED!

Thanks a lot

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Answer 4

Answer by ironWolf1990 · Nov 30, 2020 at 03:00 AM

OS : Ubuntu:20.04
>VSCode : 1.51.1
>Unity : 2019.4.15f1
> Visual Studio Code Package : v1.2.3

I had the same problem, I didn't downgrade the vscode package. Simply

Close Unity
Delete .sln and .csproj and close vscode
Restart unity and regenerate project file by Edit -> Preferences -> External Tools -> Regenerate Project Files.

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djDavidj · Nov 09, 2021 at 11:48 PM 0

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This worked for me. Thank you.

Answer 5

Answer by Beastman632 · Apr 23, 2020 at 06:24 PM

I also go this in the past and I'm now on 2019.3.10f1 and still got it. However if you just run and stop your project in unity and make sure all errors are resolved, the missing class imports in vs code will be fixed.

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VS Code does not find some classes. cs0246/cs0103

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