Ensure the method is called before the first licensed control is created. Verify the key string (no extra spaces, correct encoding). 2. LicenseExpiredException Cause: The license key has passed its expiration date (common for annual subscriptions).
public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureWebHostDefaults(webBuilder => webBuilder.UseStartup<Startup>(); ); licenseinfo.setlicensekey
public static void Main(string[] args)
LicenseInfo.SetLicenseKey("YOUR_LICENSE_KEY_HERE"); Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new MainForm()); Ensure the method is called before the first