Set Up Your Kendo UI for Vue License Key

In this article, you’ll learn how to activate the Kendo UI for Vue components by installing a personal license key.

Since version 3.14.0 (13 September 2023) of Kendo UI for Vue, a missing license causes a watermark to appear over selected components. For more information, see theInvalid License section below.

Kendo UI for Vue is a professionally developed library distributed under acommercial license.Starting fromversion 2.0.0, using any of the UI components from the Kendo UI for Vue library requires either a commercial license key or an active trial license key.

The license key installation process involves three steps:

1. Download a license key from this page (see next section).
2. Install or update your license key file in your project.
3. Register the license key by running a CLI command.

Download Your License Key

To download a license key for Kendo UI for Vue, you must have either a developer license or a trial license. If you are new to Kendo UI for Vue,sign up for a free trial first and then follow the steps below.

1. Go to theLicense Keys page in your Telerik account.

2. Click theDownload License Key button in theLicense Key banner.

   

Starting with the 2025 Q1 release, the name of the downloaded file changes fromkendo-ui-license.txt totelerik-license.txt. This change is required as all Telerik UI and Kendo UI products now use the same licensing mechanism with a common license key. See theHandling License Key File Name and Environment Variable Name Changes in the 2025 Q1 Release knowledge base article for more details.

Installing or Updating the License Key

1. Copy the license key file (telerik-license.txt) to the root folder of your application. This is the folder that contains thepackage.json file.
   • Alternatively, copy the contents of the file to theTELERIK_UI_LICENSE environment variable.
2. Install@progress/kendo-licensing as a project dependency by runningnpm install --save @progress/kendo-licensing oryarn add @progress/kendo-licensing.
3. Runnpx kendo-ui-license activate oryarn run kendo-ui-license activate in the console.

• If both theTELERIK_LICENSE environment variable and thetelerik-license.txt file are present, then the environment variable will be used.

When renewing your subscription, always regenerate and reactivate the license key. This will allow you to update the Kendo UI for Vue components in your application. Each licensing file contains information about the validity of your subscription and can be used for all Kendo UI for Vue versions published before its expiration date.

Troubleshooting

If you have a valid license key, and theLicense activation failed warning appears in the terminal, performing a clean, fresh install usually resolves it. To do this, follow these instructions:

1. Runrm -rf node_modules to remove all installed packages.
2. Delete thepackage-lock.json and/oryarn.lock file(s).
3. Make a new npm install and activation of the license.

If the invalid license attributes are still displayed after you have installed or updated the license key, see theLicense Activation Errors and Warnings and theFAQs articles for more information.

Suggested Links

• Adding the License Key to CI Services
• License Activation Errors and Warnings
• Frequently Asked Questions