public static void Main(string[] args) { var config = new LoggerConfiguration() .MinimumLevel.Debug() .MinimumLevel.Override("Microsoft", LogEventLevel.Warning) .MinimumLevel.Override("Microsoft.AspNetCore.SpaServices", LogEventLevel.Information) .Enrich.FromLogContext() .WriteTo.Console(outputTemplate: "[{Timestamp:HH:mm:ss} {Level:u3}] {SourceContext} {Message:lj}{NewLine}{Exception}") .WriteTo.Trace(); var environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT"); var isDevelopment = environment == Environments.Development; if (!isDevelopment) { config = config .WriteTo.File( @"D:\home\LogFiles\Application\myapp.txt", fileSizeLimitBytes: 1_000_000, rollOnFileSizeLimit: true, shared: true, flushToDiskInterval: TimeSpan.FromSeconds(1)) .WriteTo.ApplicationInsights(TelemetryConverter.Traces); } Log.Logger = config.CreateLogger(); try { Log.Information("Starting web host"); CreateWebHostBuilder(args).Build().Run(); } catch (Exception e) { Log.Fatal(e, "Host terminated unexpectedly"); } finally { Log.CloseAndFlush(); } }