Licenseinfo.setlicensekey -

CreateHostBuilder(args).Build().Run();

public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureWebHostDefaults(webBuilder => webBuilder.UseStartup<Startup>(); ); licenseinfo.setlicensekey

// Set license key as early as possible LicenseInfo.SetLicenseKey("YOUR_LICENSE_KEY_HERE"); CreateHostBuilder(args)

using Telerik.Licensing; public class Program public class Program