Developer licenses come with modified DLLs, which work without displaying copyright messages. If you have a Developer license for one or more of the Telerik components, you only need to ensure that you are using the developer build when downloading the control(s). These builds have the Dev abbreviation in their file names.

If your application is displaying a copyright message intermittently, this means that you are using a trial version of the product. Log in to your Telerik account and download the developer build through the Manage Products menu and its Purchased Products section. To update your project, please take a look at the Upgrading the Trial License to a Production License section for step-by-step instructions.

The free trial licenses of all Telerik products are fully functional and will work for an unlimited time but with copyright message (see below) displayed randomly on the page.

The trial licenses will occasionally display the following message on your webform:

Telerik RadControls for ASP.NET AJAX trial version. Copyright Telerik © 2002-2012. To remove this message, please, purchase a developer version .

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