import { registerLicense } from '@syncfusion/ej2-base'; // Registering Syncfusion license key registerLicense('YOUR_ACTUAL_KEY_HERE'); Use code with caution. For Flutter Add the registration in your main() function:
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
Ensure your key matches the product. A "File Formats" key won't unlock "Essential JS 2" UI controls. Summary Checklist Ensure your key matches the product
Manually delete the bin and obj folders in your project directory. You must register the license key before any
You must register the license key before any Syncfusion components are rendered. Here is where to apply the fix based on your tech stack. For ASP.NET Core / Blazor
Occasionally, a corrupted package metadata causes issues. Run dotnet nuget locals all --clear . Rebuild: Perform a fresh Rebuild of the project. Important Versioning Rules
The "Syncfusion trial license key fix" is version-sensitive.