Azure functions runtime exception, the type initializer for system data sqlclient excetion, Unable to load DLL 'sni.dll'

Question

I am using aspnet core 3.0 and azure function v3-preview with system.data.sqlclient version 4.7.0 When i try to run azure function(on both service queue trigger

Answer 1

It worked for me by adding below code in csproj file :

<Target Name="PostPublish" BeforeTargets="Publish">
  <Exec Command="move $(PublishDir)\runtimes $(PublishDir)\bin" />
</Target>

This line should be taking care of that: <Exec Command="move $(PublishDir)\runtimes $(PublishDir)\bin" />

reference : github

Answer 2

Please make sure your azure function meet these criteria in this link.

And here is a workaround provided by others, add the following to your .csproj:

<Target Name="PostBuild" AfterTargets="PostBuildEvent">
    <Exec Command="copy $(OutDir)$(ProjectName).deps.json $(OutDir)bin\function.deps.json" />
  </Target>
  <Target Name="PostPublish" BeforeTargets="Publish">
    <Exec Command="copy $(PublishDir)$(ProjectName).deps.json $(PublishDir)bin\function.deps.json" />
  </Target>