Resolve - Azure Function App Publish Specific Target Not Existing in VS2019

Problem statement

When following official tutorial Develop and publish .NET 5 functions using Azure Functions, the Specific target for Azure Function App doesn't exist in the wizard.

Environment: Visual Studio 2019 16.11.1 (the latest version).

Azure Tools: Included when installing Visual Studio.

.NET version: 5.0 (isolated).

Resolution

To fix this problem, simply add the following highlighted package reference (Microsoft.Azure.Functions.Workder.Sdk)  in your project file:

<Project Sdk="Microsoft.NET.Sdk">
	<PropertyGroup>
		<TargetFramework>net5.0</TargetFramework>
		<AzureFunctionsVersion>v3</AzureFunctionsVersion>
		<OutputType>Exe</OutputType>
	</PropertyGroup>
	<ItemGroup>
		<PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.5.1" />
		<PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.0.4" />
		<PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Storage" Version="4.0.4" />
		<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="5.0.0" />
        </ItemGroup>
	<ItemGroup>
		<None Update="host.json">
			<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
		</None>
		<None Update="local.settings.json">
			<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
			<CopyToPublishDirectory>Never</CopyToPublishDirectory>
		</None>
	</ItemGroup>
</Project>

Blob triggered function

For Blob triggered function template with .NET 5 in Visual Studio 2019, you will encounter compiler errors like could not find FunctionAttribute or BlobTriggerAttribtue class. The resolution is already provided in the above sample project file - add the right package references:

<PackageReference Include="Microsoft.Azure.Functions.Worker" Version="1.5.1" />
<PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="1.0.4" />
<PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Storage" Version="4.0.4" />

Refer to .NET isolated process guide for .NET 5.0 in Azure Functions | Microsoft Docs for details.