VS Code install C# extension with local OmniSharp

visual-studio-code omnisharp
J Lewis picture J Lewis · Mar 29, 2018 · Viewed 9.9k times · Source

Due to limitations with my current work setup, I'm trying to do a local installation of the VS Code C# extension. I can install it fine using the marketplace or a .vsix, but run into issues where it tries to install the required OmniSharp toolset.

As a result of this I have installed a local version of OmniSharp and have set the omnisharp.path setting in VS Code to point at this local installation. My issue is that instead of using this, the extension will still try and download a version of OmniSharp.

Is there a way of working around this, without having to set up VS Code to work nicely with our network (probably proxy issues)?

Extension manager output for reference:

Updating C# dependencies...
Platform: win32, x86_64

Downloading package 'OmniSharp for Windows (.NET 4.6 / x64)'    Retrying from 'https://omnisharpdownload.blob.core.windows.net/ext/omnisharp-win-x64-1.23.2.zip' Downloading package '.NET Core Debugger (Windows / x64)'   Retrying from 'https://vsdebugger.blob.core.windows.net/coreclr-debug-1-12-5/coreclr-debug-win7-x64.zip' 
Installing package 'OmniSharp for Windows (.NET 4.6 / x64)'
Failed at stage: installPackages
Error: end of central directory record signature not found

Finished

Answer

MuhammadMahmud picture MuhammadMahmud · May 18, 2018

I believe this is due to restriction from corporate proxy setup. You can follow the workaround from here --> https://www.codeproject.com/Tips/1209935/VS-Code-NET-Core-Offline-installation-of-extension

It is working for me. But I have changed the path to %USERPROFILE%.vscode\extensions\ms-vscode.csharp-1.14.0\.omnisharp to make it work.

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