Implemented Managed Identity for App Service to access Application Insights .NET Core 3.1

Question

I implemented my webapp so that it is able to log data to Application Insights through managed identity. I noticed now that after my implementation I am getting an error on the home page of the webapp:

This is the page that comes up on my app when loads up when a valid route is not found. If I was to go to the Console this is what I see:

Like I mentioned, this came after Managed Identity was implemented.

Answer 1

Thanks @Panagiotis Kanavos for the comments.

• Yes, .NET Core 3.1 is OutofSupport and your App may not work as expected.

• If you still want to continue with the old Core 3.1 version, check the below steps.

Thanks @Stefano Demiliani for the clear explanation.

I have taken references from MSDoc and demiliani

• To work with Managed Identity, you need to assign a new role Monitoring Metrics Publisher in Application Insights.

• Even the Properties section in Application Insights says the same.

• Disable the Local Authentication.

My .csproj file:

<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup>    
  <TargetFramework>netcoreapp3.1</TargetFramework>    
  <ApplicationInsightsResourceId>/subscriptions/**********/resourceGroups/********/providers/microsoft.insights/components/Core3AppInsights</ApplicationInsightsResourceId>   
    <UserSecretsId>********</UserSecretsId>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Azure.Identity" Version="1.10.4" />
    <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.21.0" />
    <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="8.0.0" />
  </ItemGroup>
</Project>

In Startup.cs file, add under ConfigureServices,services.AddApplicationInsightsTelemetry();.