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Setting Up the License File

This article describes how to activate the Kendo UI for jQuery scripts from the CDN and NPM distribution by generating a personal license file.

Kendo UI for jQuery is a UI library distributed under a commercial license.

As of the R2 2022 release, using any of the Kendo UI for jQuery components from the NPM distribution channel and as of R3 2022 from the CDN distribution requires a license registration. Depending on the license type you own, you can register an active trial license or a commercial license key.

If you are experiencing any issues related to the license key, inform the team through the available support channels.

  • The script license registration is required only for the commercial NPM package (@progress/kendo-ui) and the CDN distribution. The other Kendo UI for jQuery commercial distributions or script sources require only an active license. This means that you don't need license registration when using NuGet, Bower, and for locally downloaded Kendo UI bundles.
  • The license key will be distributed along with the scripts which cannot not be avoided. However, Progress recommends that you do not publicly announce it.

The license key installation process involves the following steps:

  1. Download a license file
  2. Add the license file in your application
  3. Add a Reference or Import the License File

1. Get a License File

This section contains auto-generated content based on the license information for your account.

To acquire a license file, generate it:

2. Add the License File

To register the Kendo UI product, you need to add the kendo-ui-license.js file in the root of the application or in the main scripts folder. The following table shows the most common location you can include it according to the type of application you are using.

Type of Application Common Locations
JS applications
  • ./
  • ./src
  • ./scripts
  • ./js
ASP.NET MVC applications
  • ./
  • ./Scripts
ASP.NET Core applications
  • ./wwwroot
  • ./wwwroot/scripts
  • ./wwwroot/js

3. Add a Reference or Import the License File

You can reference the kendo-ui-license.js file by using either of the following approaches:

Use a Script Reference

Add the kendo-ui-license.js as a script reference right after the kendo.all.min.js reference or the Kendo UI scripts you are using.

The following example shows how to use the CDN reference (kendo.all.min.js).

<script src="***/kendo.all.min.js"></script>
<script src="./kendo-ui-license.js"></script>

<!-- Rest of the HTML -->

The following example shows how to use the CDN reference by utilizing the predefined list of scripts.

<script src="***/kendo.core.min.js"></script>
<script src="***/kendo.userevents.min.js"></script>
<script src="***/kendo.draganddrop.min.js"></script>
<script src="***/kendo.popup.min.js   "></script>
<script src="***/kendo.fx.min.js"></script>
<script src="***/kendo.window.min.js"></script>
<script src="./kendo-ui-license.js"></script>

<!-- Rest of the HTML -->

Use JS or TS Modules

Import the kendo-ui-license.js file right after the import of the Kendo UI modules.

The following example shows how to use the ESM modules.

import "@progress/kendo-ui";
import "./kendo-ui-license.js";


The following example shows how to use the CJS modules.



Often, you will need two or more imports of the Kendo UI libraries and you will need to import the license file only in one location, which most likely will be the main script file of your application. In that case, import the kendo.core.js and register your license code as usual:

The following example shows how to use the ESM modules to import the license file in a single location.

import '@progress/kendo-ui/js/kendo.core';
import './kendo-ui-license.js';

// The rest of the code.

The following example shows how to use the CJS modules to import the license files in a single location.


// The rest of the code.

Frequently Asked Questions

This section lists the answers to the most frequently asked questions (FAQs) about working with the Kendo UI for jQuery license key.

Do I need to generate a new license file if I had to renew my license?

Yes, but only If you upgrade the version of our product in your application with the new version.

What happens if a developer leaves?

This doesn’t affect your licensing key. The license key is generated against a specific range of versions and it will be valid as long as the license code is valid for the product version you are using (that is, you need to change the license file only when you upgrade Kendo UI for jQuery).

Which versions of jQuery does this affect?

  • For CDN usage, version R3 2022 and later.

  • For NPM usage, version R2 2022 and later.

Will projects stop working if I don't renew?

No, the licensing mechanism doesn’t control the components behavior. Also, the licensing mechanism checks if the user account (used to generate the license file) has a license for the product version used in the application. Note that the Kendo UI licenses are perpetual (see the EULA)..

Will the product function without a license key?

Yes, the product will continue to function normally without a license key. However, a warning message will appear in the browser console if a valid license key is not present.

Does the license key expire?

Yes, the license key expires at the end of your support subscription:

  • (For trial licenses) The license key expires at the end of your 30-day trial.
  • (For commercial licenses) The license key expires when your subscription expires.

You will need to obtain and install a new license key after starting a trial, renewing a license, or upgrading a license.

An expired license key is valid for all Product versions which are published before its expiration date.

I renewed my license key, but the warning message still appears in the console. What should I do?

Make sure that the script license is present in your project and you have correct references to it.

Do I need an Internet connection to activate the license?

No, the license activation and validation are performed entirely offline. No network requests are made at any point of the project lifecycle.

My team has more than one licensed developer. Which key do we have to use?

To activate Kendo UI for jQuery, you can use any of the keys associated with your subscriptions.

Are earlier versions of Kendo UI for jQuery affected?

No, if you use CDN and Kendo UI for jQuery versions released prior to R3 2022 or NPM and version released prior to R2 2022, you don’t need to set up the licensing.

Do not include a license file when using Kendo UI versions prior to R3 2022. Including a license file with those versions will cause a KendoLicensing is not defined error.

Next Steps

See Also

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