License Key Fix __exclusive__: Syncfusion Trial

A: You registered the key after the grid loaded. Move the registration to Main() or App() constructor.

You likely have multiple projects in your solution. The project that first loads a Syncfusion control must call RegisterLicense . For example, if your UI layer references a class library that uses Syncfusion, register the key in the UI layer's Main method. syncfusion trial license key fix

Syncfusion components do not automatically "know" your license status via a config file or dashboard login. Instead, they require a programmatic handshake. If the license is not registered before the UI components are initialized, the library defaults to its "evaluation" state, triggering the watermark. The Fix: Strategic Registration A: You registered the key after the grid loaded

How to Fix Syncfusion Trial License Key Errors: A Complete Guide The project that first loads a Syncfusion control

The key is generated but never called in the application startup.

// Paste your trial key here SyncfusionLicenseProvider.RegisterLicense("YOUR_TRIAL_KEY_FROM_ACCOUNT");

The "fix" depends entirely on where you are in your development lifecycle.