If you still see the watermark or error after 30 minutes of trying, apply for the Community License. It’s free, permanent, and eliminates the entire trial headache.
To fix issues with your Syncfusion Trial License Key , you typically need to ensure the version of the NuGet packages matches the version of the key you generated. Syncfusion license keys are version-specific and do not work across different major releases. 1. Identify the Correct Version
using Syncfusion.Licensing; var builder = WebApplication.CreateBuilder(args); // Register Syncfusion license SyncfusionLicenseProvider.RegisterLicense("YOUR_ACTUAL_LICENSE_KEY_HERE"); var app = builder.Build(); Use code with caution. For Angular / React / Vue ( main.ts or index.js )
A: No. Syncfusion does not require a license key for development purposes when using NuGet packages from version 13.2.0.29 onwards. However, you will encounter the validation popup when you run your application. syncfusion trial license key fix
Ensure you have a valid key that exactly matches the version of the Syncfusion packages you are using. Log in to your . Navigate to the License & Downloads section. Click on Downloads & Keys .
Having mismatched versions is a primary cause for stubborn trial popups.
The license must be registered globally before the application renders any UI components. If you still see the watermark or error
When to Contact Vendor Support If the preceding steps fail, contact Syncfusion support with:
: Ensure the key was generated for the correct platform (e.g., ASP.NET Core vs. Flutter). Using a web key for a mobile project will trigger a licensing error. Registration Timing : The license must be registered
Search results suggesting a "fix" usually point to two specific avenues, both of which carry significant drawbacks. Syncfusion license keys are version-specific and do not
Are you seeing a disruptive watermark, a popup warning, or a console error saying your Syncfusion license key is invalid or missing?
using Syncfusion.Licensing; // For WinForms Main method [STAThread] static void Main() SyncfusionLicenseProvider.RegisterLicense("YOUR_GENERATED_LICENSE_KEY_HERE"); Application.EnableVisualStyles(); Application.Run(new Form1()); Use code with caution. For JavaScript / Angular / React / Vue
A mismatch between a v20 key and v21 packages will trigger the trial warning. : Delete bin and obj folders.