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title description type page_title slug tags res_type ticketid
Resolving TelerikLicense.vb Build Error for ASP.NET AJAX 2025 Q1 License Key
This article provides solutions for the TelerikLicense.vb build error encountered when updating to the ASP.NET AJAX 2025 Q1 assemblies.
troubleshooting
Fixing Build Error with ASP.NET AJAX 2025 Q1 TelerikLicense.vb File
common-resolve-teleriklicense-vb-build-error
license, build error, asp.net ajax, vb
kb
1678633

Environment

Product Progress® Telerik® UI for ASP.NET AJAX

Description

Updating web projects with the new 2025 Q1 assemblies for Progress® Telerik® UI for ASP.NET AJAX results in a build error related to the TelerikLicense.vb file. The build error error BC30034: Bracketed identifier is missing closing ']' occurs when trying to follow the instructions for adding the license key to the project. Additionally, the Telerik License Key view uses C# syntax, which the VB compiler does not understand.

Cause

The cause of the build error is the incorrect syntax used in the TelerikLicense.vb file. The VB compiler does not recognize the C# syntax provided in the Telerik License Key view.

Solution

To resolve the build error, use the correct VB syntax in the TelerikLicense.vb file. Replace the content of the TelerikLicense.vb file with the following VB syntax:

<Assembly: Telerik.Licensing.EvidenceAttribute("...your license code string...")>

Replace ...your license code string... with your actual license code string from your Telerik account.

Alternatively, to prevent licensing warnings and make the license key available to all Telerik .NET apps you develop on your local machine, follow these steps:

  1. Go to the License Keys page in your Telerik account.
  2. Click the Download License Key button.
  3. Save the telerik-license.txt file to one of the following directories on your local machine:
    • %AppData%\Telerik\telerik-license.txt (e.g., C:\Users\...\AppData\Roaming\Telerik\telerik-license.txt)
    • C:\inetpub\wwwroot\telerik-license.txt
    • C:\inetpub\telerik-license.txt
    • C:\telerik-license.txt

See Also