Dotnet 6.0 Azure function v4 build error - Visual Studio for Mac

Build Error

/Users/user2/.nuget/packages/microsoft.azure.webjobs.script.extensionsmetadatagenerator/4.0.1/build/Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator.targets(37,5): error : Metadata generation failed. Exit code: '137' Error: 'Failed to initialize CoreCLR, HRESULT: 0x80004005'
Done building target "_GenerateFunctionsExtensionsMetadataPostBuild" in project "testfunc.csproj" -- FAILED.

Done building project "testfunc.csproj" -- FAILED.

Build FAILED.

/Users/user2/.nuget/packages/microsoft.azure.webjobs.script.extensionsmetadatagenerator/4.0.1/build/Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator.targets(37,5): warning : Failed to initialize CoreCLR, HRESULT: 0x80004005
/Users/user2/.nuget/packages/microsoft.azure.webjobs.script.extensionsmetadatagenerator/4.0.1/build/Microsoft.Azure.WebJobs.Script.ExtensionsMetadataGenerator.targets(37,5): error : Metadata generation failed. Exit code: '137' Error: 'Failed to initialize CoreCLR, HRESULT: 0x80004005'
   1 Warning(s)
   1 Error(s)

func version
4.0.3971

Visual Studio Enterprise 2022 for Mac Preview
Version 17.0 Preview (17.0 build 5186)

Azure function .csProj config

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <AzureFunctionsVersion>v4</AzureFunctionsVersion>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.0.1" />
  </ItemGroup>
  <ItemGroup>
    <None Update="host.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="local.settings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
      <CopyToPublishDirectory>Never</CopyToPublishDirectory>
    </None>
  </ItemGroup>
</Project>

[andrew-benson]

Hi there, it seems a .NET 6 install breaks your Function app builds from what I can tell by reading this useful thread on it: https://issueexplorer.com/issue/dotnet/installer/11951. They’re talking about reinstalling .NET 5. I also got this issue but was able to get around it another way by doing some clean up with my SDK and Runtimes currently installed.

I’d recommend downloading the .net uninstaller from here: https://github.com/dotnet/cli-lab/releases

Once it’s running use the following command to see what you currently have installed, as a bonus it will also tell you which SDKs and runtimes are being used by Visual Studio - don’t remove these. ./dotnet-core-uninstall list

I decided on what to remove by using dotnet sdk check and removed anything that said there’s an update available (as long as that update was already in the list).

Then use the command line to delete your sdk --sdk or runtime --runtime e.g. sudo ./dotnet-core-uninstall remove 5.0.401 --sdk

Here’s what my current SDK/Runtime setup in case you want to copy mine:

andrewbenson@Andrews-MacBook-Pro-2 ~ % dotnet sdk check
.NET SDKs:
Version      Status     
------------------------
3.1.416      Up to date.
5.0.404      Up to date.
6.0.101      Up to date.

.NET Runtimes:
Name                          Version      Status     
------------------------------------------------------
Microsoft.AspNetCore.App      3.1.22       Up to date.
Microsoft.NETCore.App         3.1.22       Up to date.
Microsoft.AspNetCore.App      5.0.13       Up to date.
Microsoft.NETCore.App         5.0.13       Up to date.
Microsoft.AspNetCore.App      6.0.1        Up to date.
Microsoft.NETCore.App         6.0.1        Up to date.

hope this helps

[johnnybegood]

I was able to fix it with the uninstaller, but after a visual studio (for Mac) update it broke again. Uninstalling doesn’t seem to do the trick anymore.

Reinstalling .NET 5 SDK does resolve the issue