Function Runtime Error

Question

Function Runtime Error

mbeesley 1

My azure function runtime is unable to start with error:
Microsoft.Azure.Functions.Extensions: Method not found: 'Microsoft.Extensions.Configuration.IConfigurationBuilder Microsoft.Azure.WebJobs.Hosting.IWebJobsConfigurationBuilder.get_ConfigurationBuilder()'.

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Answer 1

MughundhanRaveendran-MSFT 12,506

@mbeesley ,

Thanks for reaching out to Q&A forum.

Please check if your scenario is related to this issue. If it is not related, I would suggest you review the dependency injection implementation in your code. Please look into the below documentation for reference.

https://learn.microsoft.com/en-us/azure/azure-functions/functions-dotnet-dependency-injection

Feel free to reach out to me if you have any queries or concerns.

Thirumal Reddy 0

Thank you Mughundhan for your solution. We are migrating our Azure function apps to .Net 6. We got same issue what @mbeesley is getting and resolved Azure Function app(Event based) using this solution.https://github.com/Azure/azure-functions-host/issues/5735 We have another Azure Function app with Service bus dependency and we upgraded the Function app to .Net 6 and deployed in to Azure Portal. It started working on. After few days from 2023 April first week onwards it started giving error in Azure and in local as well. Below are the errors AZFD0005: Error building configuration in an external startup class.
Functions runtime error: Microsoft.Azure.Functions.Extensions: Method not found: 'Microsoft.Extensions.Configuration.IConfigurationBuilder Microsoft.Azure.WebJobs.Hosting.IWebJobsConfigurationBuilder.get_ConfigurationBuilder()'. We tried to debug the code in local as well we are getting in the WebJobsBuilderExtensions.cs file Below are the package references we have in our project

<PackageReference Include="AutoMapper" Version="10.1.1" />
    <PackageReference Include="DeveloperForce.Force" Version="2.1.0" />
    <PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="5.2.9" />
    <PackageReference Include="Microsoft.AspNetCore.Routing" Version="2.2.2" />
    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs" Version="3.0.33" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions" Version="4.0.1" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.EventGrid" Version="3.2.1" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.ServiceBus" Version="4.3.0" />
    <PackageReference Include="Microsoft.Data.SqlClient" Version="5.1.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.2" />    
    <PackageReference Include="Microsoft.Extensions.Configuration" Version="6.0.0" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.1.3" />
    <PackageReference Include="Polly" Version="7.2.2" />
	  <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.0">
		  <PrivateAssets>all</PrivateAssets>
		  <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
	  </PackageReference>

Could you please help us here.

Answer 2

I was still getting this error even after upgrading the FUNCTION_EXTENSION_VERSION to v4, the .NET version to net6.0, and the NuGet packages on the function app. However, I had referenced a number of Microsoft.X packages that were labeled 7.0. I had to revert all of the references to 6.0 for both my function app, AS WELL AS the chain of projects that were referenced in my code for the function app (it ran about 4 deep). I believe the 7.0 libraries only are compatible with Function Apps that run in Isolation Mode, which we are not using yet. See https://github.com/Azure/azure-functions-host/issues/8984.

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Function Runtime Error

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