Suppressing Application Insights telemetry on an ASP.NET web applications

aspnet-ai-telemetry-suppress-init.cs

// **********************************************
// Fore more information, visit: 
// https://blog.hildenco.com/2020/02/suppressing-application-insights.html
// **********************************************

// add this on your Global.asax
var builder = TelemetryConfiguration.Active.DefaultTelemetrySink.TelemetryProcessorChainBuilder;
builder.Use((next) => new SuppressFaviconFilter(next));
builder.Build();