No license found for Telerik ui for winforms

[Ahmed]

I have upgraded my WinForms project to the latest version, as shown in the attached file.

When running the application inside the VS 2022, a dialog box shows with no license.

I tried the suggested resolution from:

https://docs.telerik.com/devtools/winforms/licensing/license-key#downloading-the-license-key

I also downloaded the latest license from my account.

Nothing resolved the problem.

Can you help, please?

Note: My subscription will expire by 20 Sep 2025

[Nadya | Tech Support Engineer]

Hello, Ahmed,

With our latest 2025 Q2 release, UI components from the Telerik UI for .NET WinForms library require activation through a license key.

You said that you already downloaded the License Key successfully from your account. Now,  you also need to get the Telerik.Licensing NuGet package from the NuGet Package Manager. It will automatically add a reference to Telerik.Licensing.Runtime dll in your project, which is required to activate Telerik controls. 

The exact steps how to activate our controls are described here: Activating the Telerik UI for .NET WinForms Components.

Once you set up the license key and add a reference to Telerik.Licensing.Runtime, you are not supposed to receive licensing messages or warnings.

Please follow the suggested steps, and let me know if you have further issues.

Regards,
Nadya | Tech Support Engineer
Progress Telerik

[Ahmed]

Thank you ver much Nadya.
Issue resolved after installing Telerik.Licensing and referencing the Telerik.Licensing.Runtime.