Troubleshooting Kendo UI License Error, Resolving Console Warning, and Watermark on Components

Environment

Description

When upgrading your Kendo UI package or renewing the Kendo UI license, you could encounter issues with the license activation such as the console showing a warning that the license is expired, or there is a watermark on the components indicating an invalid license.

Solution

To resolve the issue, follow these steps:

1. Confirm the expiration date of your license by referring to the Downloading the License key article. Download the key and replace the one that you are using.
2. Run rm -rf .angular/cache to clear the cache stored by Angular.
3. If you're setting the license key as an environment variable, run Write-Output $env:KENDO_UI_LICENSE in PowerShell to verify that there is no older version of the license key in the environment variable. It should be empty. If not empty, delete the environment variable and reset the environment variable to the new license key.
4. Delete the node_modules folder and the package-lock.json file.
5. Run npm cache clean to clear the NPM cache.
6. Run npm install to install all the packages.
7. Activate the license and run the application.

Notes

• Make sure you have a valid Kendo UI license before proceeding with the activation.
• If the issue persists, please contact our support team for further assistance.

Suggested Link

• Setting Up Your Kendo UI for Angular License Key