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Removing the Kendo License Warning


Product Telerik UI for ASP.NET Core
Progress Telerik UI for ASP.NET Core version 2022.3.913


After upgrading, there is a warning in the console stating the following:

 License Activation failed for @progress/kendo-ui
 No license found

A watermark for the component I have been using:

Watermark over Grid with Light Theme

And a banner which indicates that my license is not found: Banner

The application seems to be running. How can I remove the warning, watermark, and banner?


The license warning will surface because of the new licensing mechanism introduced with the R3 2022 release. To remove the warning:

  • Generate a license file.
  • Add the license file after the CDN reference to kendo.all.min.js and kendo.aspnetmvc.min.js.

    <script src="***/kendo.all.min.js"></script>
    <script src="***/kendo.aspnetmvc.min.js"></script>
    <script src="~/kendo-ui-license.js"></script>
    <!-- Rest of the HTML -->

The license file mechanism does not break any builds and does not affect existing applications. It acts as verification when the CDN or NPM distribution channel is utilized for the client-side resources.

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