Avoid hardcoding keys. Store them in appsettings.json or as environment variables for better security and easier updates.
from the Downloads and Keys page for your target major version and edition(s). syncfusion generate license key upd
// Program.cs using Syncfusion.Licensing; var builder = WebApplication.CreateBuilder(args); // Register Syncfusion license SyncfusionLicenseProvider.RegisterLicense("YOUR_NEW_LICENSE_KEY_HERE"); var app = builder.Build(); Use code with caution. For .NET MAUI Avoid hardcoding keys