string licenseKey = Environment.GetEnvironmentVariable("SYNCFUSION_LICENSE_KEY"); Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense(licenseKey);

Once you have generated your key, you must register it in your application code. This is required to remove evaluation banners. For .NET Applications (Blazor, WPF, WinUI)

: If your subscription has expired, you must renew it to get a key for the latest version. However, Syncfusion usually provides a 5-day temporary key to prevent immediate downtime during the renewal process. How to Generate Syncfusion License Keys for React 2 Feb 2026 —

Open your web browser and navigate to the Syncfusion Login Page.

Crucially, the license key is the same as the unlock key. Starting with version 16.2.0.41, if you reference Syncfusion assemblies from the evaluation installer or NuGet feed, you must include a license key in your projects.

This article provides a step-by-step walkthrough on how to generate and update Syncfusion license keys for your development projects. Understanding Syncfusion Licensing

For , avoid hardcoding keys directly. Syncfusion recommends using licensed NuGet packages instead of registering keys in WASM client code:

Licensing errors can manifest as pop-up messages, console warnings, or runtime exceptions. Below are the most common error messages and their solutions.

Complete Guide: Syncfusion Generate License Key Update must be updated in your application whenever you perform a major volume release upgrade . Essential Studio components rely on strict, version-specific validation. Moving across major versions without modifying your registration key causes restrictive evaluation watermarks and runtime license exceptions.

If you are maintaining a legacy project, the process remains platform-specific. Navigate to the same page.