The key is for an older or newer version than the NuGet packages you've installed.
<script> ej.base.LicenseManager.registerLicense('YOUR_TRIAL_KEY_FROM_ACCOUNT'); </script>
Sometimes, the development server caches the old "trial" state. After applying the key, perform a Clean and Rebuild of your solution and clear your browser cache.
Attempting to "fix" a Syncfusion trial license key is a high-risk, low-reward endeavor. While technically possible via IL patching, it introduces instability, prevents future updates, and exposes the development environment to significant security threats. The availability of the robust or high-quality open-source alternatives renders the need for illicit fixes largely obsolete for the majority of independent developers and startups.
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.
Manually delete the bin and obj folders inside your project directory.
Instead, use that are distributed with licensed Syncfusion releases. These packages have the license "baked in," eliminating the need for runtime registration. When you use these packages, the RegisterLicense method call is not required. You can host these licensed packages in a local folder or a private NuGet repository (like Nexus or Azure Artifacts) to ensure your build process never pulls a trial version.
Check your package manager (NuGet, NPM, or Pub) for the exact version number of your Syncfusion libraries. Generate a new key matching that exact version. Duplicate Platform Registrations
Ensure that you are using a key mapped to your exact product version.
: Using a JavaScript license key in a .NET application (or vice-versa) will trigger a "Platform Mismatch" error.
To eliminate the licensing warning immediately, complete these three tasks: Step 1: Generate a Matching License Key Log into your . Navigate to the License & Downloads section. Select Downloads & Keys . Click Get License Key .
