If you are just starting and have not yet registered a key, this is your solution.
In main.ts :
Follow these steps to generate and apply a valid license key to eliminate the trial errors. 1. Retrieve the Matching License Key Log into your . Navigate to the License & Downloads section. Select Downloads & Keys . Click Get License Key .
If you updated Syncfusion packages, you must generate a new license key that matches the new version number. 5. Verify Community License Eligibility syncfusion trial license key fix
var app = builder.Build();
: License keys are platform-specific (e.g., Blazor, React, ASP.NET Core). Ensure you are using a key generated for the correct platform.
Syncfusion license keys are highly version-specific. If your NuGet package version is 24.1.41 , a license key generated for version 24.1.39 or 24.2.0 will fail. Open your project files (e.g., .csproj or package.json ). If you are just starting and have not
To resolve "This application was built using a trial version of Syncfusion" popups or expiration errors, you must ensure your registered license key matches your specific platform, product version, and assembly versions.
: Copying the key from the dashboard or an email can sometimes include hidden spaces at the end, which will invalidate the key. Official Fix Guides
The Complete Guide to Resolving Syncfusion Trial License Key Errors Retrieve the Matching License Key Log into your
All installed @syncfusion packages must share the exact same major and minor version numbers.
Ensure you aren't calling RegisterLicense in multiple places with different keys.
If you are seeing a popup or console error stating or "The Syncfusion license key is invalid," you are not alone. Syncfusion requires license registration to unlock their UI component libraries for platforms like ASP.NET Core, Angular, React, Vue, Flutter, and Blazor.
Syncfusion offers a generous Community License that is completely free for individual developers and small companies with less than $1 million in gross annual revenue. This license provides access to the entire Essential Studio suite without the 30-day trial limitation.