Upgrading Telerik UI for ASP.NET Core

This document describes how to upgrade the version of the Telerik UI for ASP.NET Core helpers.

Upgrading to New Versions

To update Telerik UI for ASP.NET Core to a new version, either:

• Upgrade with NuGet or Bower.

• Manually replace the references and files.

Using NuGet or Bower

To upgrade the version with NuGet or Bower:

1. In Visual Studio, open the NuGet Package Manager and navigate to the Installed tab. Click Update for the Telerik.UI.for.AspNet.Core package.

   • If you use Bower instead of NuGet, open the Bower Package Manager and select the Installed tab. Click Update for the kendo-ui package.

2. In the application, manually replace any references which point to the old Kendo UI scripts and styles.

   • If the scripts and styles are referenced through the Kendo CDN service, update the links with the new version.

     HTML

     <link rel="stylesheet" href="https://kendo.cdn.telerik.com/themes/12.0.0/default/default-main.css" />
     <script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>
     <script src="https://kendo.cdn.telerik.com/2025.3.825/js/kendo.all.min.js"></script>
     <script src="https://kendo.cdn.telerik.com/2025.3.825/js/kendo.aspnetmvc.min.js"></script>

   • If the scripts and styles are referenced locally, download the JavaScript and CSS files from the Telerik website and then copying them in your project. For the detailed step-by-step procedure, refer to the Using Local Files article.

To properly load the Telerik and Kendo UI packages, both NuGet and Bower require authentication.

Upgrading Manually

1. Download the desired version from the Download section of your account.

2. Change the reference to the new Kendo.MVC dll. Verify that the dll refers to the correct ASP.NET Core version.

3. In the application, manually replace any references which point to the old Kendo UI scripts and styles.

   • If the scripts and styles are referenced through the Kendo CDN service, update the links with the new version.

     HTML

     <link rel="stylesheet" href="https://kendo.cdn.telerik.com/themes/12.0.0/default/default-main.css" />
     <script src="https://code.jquery.com/jquery-3.7.0.min.js"></script>
     <script src="https://kendo.cdn.telerik.com/2025.3.825/js/kendo.all.min.js"></script>
     <script src="https://kendo.cdn.telerik.com/2025.3.825/js/kendo.aspnetmvc.min.js"></script>

   • If the scripts and styles are referenced locally, download the JavaScript and CSS files from the Telerik website and then copying them in your project. For the detailed step-by-step procedure, refer to the Using Local Files article.

The NuGet package and the required client-side resources must have identical versions.

Switching to a Developer License [Deprecated]

Starting with version 2025 Q3, the Trial package is deprecated, and the toolset is available only with a Developer License.

1. After the purchase of a Developer License, follow the Update your license key guidelines.
2. To upgrade to the latest product version, follow the steps for updating the Telerik UI for ASP.NET Core version.

If you still see the Trial message after you switch to a developer (commercial) license, check the troubleshooting knowledge base article.

See Also

• Upgrade Troubleshooting

• Telerik UI for ASP.NET Core Download and Installation

• Downloading New Versions of Telerik UI for ASP.NET Core.