Troubleshooting the Syncfusion "Trial License Key" Message: A Complete Fix Guide
A license key generated for v24.x will not work for v25.x. If you upgrade your NuGet packages, you must log back into the Syncfusion portal and generate a new key for that specific version. syncfusion trial license key fix
In your Program.cs file, add the registration call before builder.Build(); . In Visual Studio, go to Build > Clean Solution
In Visual Studio, go to Build > Clean Solution . Select the specific Platform and Version that matches
import 'package:syncfusion_flutter_core/core.dart'; void main() { // Register your license key SyncfusionLicenseProvider.registerLicense('YOUR_ACTUAL_KEY_HERE'); runApp(MyApp()); } Use code with caution. Step 3: Clearing the Cache (The "Invisible" Fix)
Is the RegisterLicense method called at the very start of the app?
Select the specific Platform and Version that matches the NuGet packages in your project (e.g., v25.1.xx). Copy the generated string. Step 2: Where to Place the Fix (By Platform)