console app application insight logging is not working

[ruonan0509]

since Application Insights “Instrumentation Keys” are Sunsetting on March 31, 2025, i am trying to convert current applicationInsights config from Instrumentation Key to Connection String

current startup:

public void ConfigureServices(IServiceCollection services) => services .AddApplicationInsightsTelemetryWorkerService("00000000-0000-0000-0000-000000000000");

changed to

public void ConfigureServices(IServiceCollection services) => services .AddApplicationInsightsTelemetryWorkerService(options => options.ConnectionString = "InstrumentationKey="00000000-0000-0000-0000-000000000000");

but the new code is not logging anything to the same AI transaction logging. am I missing anything? thanks!

[TimothyMothra]

Make sure you copy the ConnectionString verbatim from your Application Insights resource. If that's not working, you can collect SDK logs to identify any errors within the SDK

[ruonan0509]

thank you @TimothyMothra getting back to me here is my AI

the connection string is very long, shall i copy the whole thing or just InstrumentationKey=xxx part? and also where i can find the SDK logs? thank you!

[TimothyMothra]

Yes, full string. The SDK needs those Endpoint values.

Self diagnostics would be the easiest way to collect internal logs: https://github.com/microsoft/ApplicationInsights-dotnet/tree/main/troubleshooting/ETW#self-diagnostics

[JJong-nl]

working with the InstrumentationKey is depricated. You should work with the connectionstring InstrumentationKey=xxx;IngestionEndpoint=xxx;LiveEndpoint=xxx;ApplicationId=xxx

https://learn.microsoft.com/en-us/azure/azure-monitor/app/connection-strings

On March 31, 2025, support for instrumentation key ingestion will end. Instrumentation key ingestion will continue to work, but we'll no longer provide updates or support for the feature. Transition to connection strings to take advantage of new capabilities.

            services.AddApplicationInsightsTelemetryWorkerService(options =>
            {
                // default is EnvironmentVariable "APPLICATIONINSIGHTS_CONNECTION_STRING"
                // so we overwrite with the appsettings
                options.ConnectionString = configuration.GetValue<string>("ApplicationInsights:ConnectionString");
            });