Which version Syncfusion license key should I use in my application

Syncfusion has been introduced the licensing system from the version 16.1.0.41. So, you should register the valid license key in your application to remove the license exception message permanently if you are using Syncfusion evaluation setup or NuGet packages.

Syncfusion license key is a version specific. So, you need to regenerate the licensing key for every new volume releases. For example, you have to generate the new license key and update the key in your application for the volume release of 16.3.*.* when you upgrading the application from Syncfusion version 16.2.0.*. No need to regenerate the key for service pack of corresponding volume release (16.2.0.*).

Please follow the steps to generate the license key:

1. Generate the license key from License & Downloads section of the Syncfusion website. Refer the following screenshot.

2. Choose the version which you want to generate the license key, and then click GET LICENSE KEY.

3. Get the License key which shown in the bottom of the pop-up window. This is your license key.

The generated license key is just a string that should be registered before any Syncfusion control is initiated. Kindly follow the licensing help document to register the key in the application.