Syncfusion® licensing overview
22 Oct 20252 minutes to read
Syncfusion® license key registration applies to all evaluators and to paid customers who use Syncfusion® packages from NuGet.org. When referencing Syncfusion® assemblies via the evaluation installer or the NuGet feed, register the corresponding platform and version-specific license key in each project.
The following validation message appears if the license key is not registered when using assemblies from the evaluation installer or from NuGet.org.
NOTE
This application was built using a trial version of Syncfusion® Essential Studio®. Include a valid license to permanently remove this license validation message. You can also obtain a free 30‑day evaluation license to temporarily remove this message during the evaluation period. See Licensing errors: license key not registered.
Difference between unlock key and license key
The license key is different from the installer unlock key and must be generated separately from the Syncfusion® website.
-
Unlock key - Used only to unlock Syncfusion® installers.
-
License key - A string registered in your project to avoid licensing warnings.
NOTE
See difference between the unlock key and licensing key.
Register Syncfusion® license keys on build servers
| Source of Syncfusion® assemblies | Details | License Key needs to be registered? | Where to get license key from |
|---|---|---|---|
| NuGet package | If the Syncfusion® assemblies used in Build Server were from the Syncfusion® NuGet packages, then no need to install any Syncfusion® installer. We can directly use the required Syncfusion® NuGet packages at nuget.org. But, if using NuGet packages from the nuget.org, then we should register the Syncfusion® license key in the application. |
Yes | Use any developer license to generate keys for Build Environments as well. |
| Trial installer | If the Syncfusion® assemblies used in Build Server were from Trial Installer, we should register the license key in the application for the corresponding version and platforms, to avoid trial license warning. | Yes | Use any developer trial license to generate keys for Build Environments as well. |
| Licensed installer | If the Syncfusion® assemblies used in Build Server were from Licensed Installer, then there is no need to register the license keys. You can download and install the licensed version of our installer. |
No | Not applicable |
You can download and install the licensed version of our installer.