If you are seeing a "License Expired" message or a popup dialog in your Syncfusion application, it usually means the 30-day trial period has concluded, or the licensing framework requires a valid key to compile without warnings.
var builder = WebApplication.CreateBuilder(args); syncfusion trial license key fix
Understanding Syncfusion License Issues When working with Syncfusion’s library of UI components, developers often encounter a “License Validation” popup or a trial watermark. This usually happens even after acquiring a trial key, leading to frustration during the development phase. Resolving this isn’t just about having a key; it’s about the correct within the application’s lifecycle. The Core Cause If you are seeing a "License Expired" message
: Check your package.json or .csproj file for the version number. If you upgraded your packages, you must generate a new key from the Syncfusion Dashboard . Resolving this isn’t just about having a key;
any Syncfusion controls are initialized. Place the registration code in the entry point of your application: ASP.NET Core / Blazor: Program.cs .NET MAUI / Xamarin: App.xaml.cs constructor. WinForms / WPF: App.xaml.cs Example Code: // Replace 'YOUR_LICENSE_KEY' with your actual key
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