[VS Code] Error: The reference assemblies for framework ".NETFramework,Version=v4.7.1" were not foun

Hello,

I want to use VS Code Mac. I just followed the installation tutorial but I got this issue with Unity 2018.3.14f1 and VS Code 1.36

Code (CSharp):

1. Microsoft.Common.CurrentVersion.targets(1195,5): Error: The reference assemblies for framework ".NETFramework,Version=v4.7.1" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend.

 

Same problem with Unity 2019.1.0f2 on Linux (Fedora) and VS Code 1.38. Any tips? Where should we look?
I'm new to the C# ecosystem so I might interpret this the wrong way. I have installed dotnet-sdk-3.0, which is the latest version on their site (https://dotnet.microsoft.com/download). The error message also mentions .NETFramework but the download page does not have it for Linux, or Mac for that matter.
Apart from that error, auto-completion doesn't work for Unity related classes, might be for the same reason.

 

I managed to fix it by installing mono. See this comment https://forum.unity.com/threads/setup-visual-studio-code-on-linux.695509/#post-4944119
The project still failed, but with another error:

Code (CSharp):

1. Unable to create directory "/Debug/". Access to the path "/Debug/" is denied

I could not figure where this path was defined but I assumed that it actually tries to write in the root of the filesystem. So I manually created /Debug and did a chmod a+rw on it. Now everything works fine.

 

Did you install Mono framework and .net core, if so write on your terminal below:
export FrameworkPathOverride=/Library/Frameworks/Mono.framework/Versions/Current

 

Im using widnows and fixed this problem by uninstalling .NET SDK 5 and installing 4.7.1 from here https://dotnet.microsoft.com/download/dotnet-framework/net471

 

Thank you very much, after 4 hours of troubleshooting...
All I had to do was uninstalling .NET 5, uninstalling SDK/Targeting Pack and installing .NET 4.7.1
Finally intellisense works and I can start programming in Unity.

For others googling this issue I add "tags" bellow:
Windows 10, Visual studio code, Unity
The reference assemblies for framework ".NETFramework,Version=v4.7.1" were not found.
Intellisense (autocomplete) fix

 

I had the same issue using csharp-ls in emacs on linux.
Settings the env variable `export FrameworkPathOverride=/lib/mono/4.5`, fixed things for me.