License Activation Errors and Warnings
Starting with the 2025 Q1 (19.0.25.211) release, using Telerik Reporting without a license or with an invalid license causes specific license warnings and errors. This article defines what an invalid license is, explains what is causing it, and describes the related license warnings and errors.
If a valid license cannot be found:
- A watermark appears on each document page in the report.
-
A warning message appears in the build log:
Telerik and Kendo UI Licensing warning TKL002: No Telerik and Kendo UI License file found. Telerik and Kendo UI Licensing warning TKL002: The following locations were searched: Telerik and Kendo UI Licensing warning TKL002: * TELERIK_LICENSE (EnvironmentVariable) Telerik and Kendo UI Licensing warning TKL002: * KENDO_UI_LICENSE (EnvironmentVariable) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\CSharp\.NET 6\WinFormsIntegrationDemo\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\CSharp\.NET 6\WinFormsIntegrationDemo\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\CSharp\.NET 6\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\CSharp\.NET 6\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\CSharp\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\CSharp\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\Examples\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\Telerik Reporting 2025 Q1\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\Progress\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Program Files (x86)\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\telerik-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\kendo-ui-license.txt (RecursiveFilePath) Telerik and Kendo UI Licensing warning TKL002: * C:\Users\user1\AppData\Roaming\Telerik\telerik-license.txt (UserDirectory) Telerik and Kendo UI Licensing warning TKL002: * C:\Users\user1\AppData\Roaming\Telerik\kendo-ui-license.txt (UserDirectory) Telerik and Kendo UI Licensing warning TKL002: Activate a License Key file at https://prgress.co/3PBSVoC Telerik and Kendo UI Licensing warning TKL101: Telerik Reporting is not listed in your current license file. Telerik and Kendo UI Licensing warning TKL004: Unable to locate licenses for all products.
Invalid License
An invalid license can be caused by any of the following:
- Using an expired subscription license. Subscription licenses expire at the end of the subscription term.
- Using a perpetual license for Telerik Reporting versions released outside the validity period of your license.
- Using an expired trial license.
- A missing license for the Telerik Reporting.
- Not installing a license key in your application.
- Not updating the license key after renewing your Telerik Reporting license.
License Warnings and Errors
Using the Telerik Reporting in a project with an expired or missing license, the Telerik.Licensing build task will indicate the following errors or conditions:
| Condition or Error | Message Code | Solution |
|---|---|---|
No Telerik and Kendo UI License file found |
TKL002 | Set up a license key to activate Telerik Reporting and remove the error message. |
Corrupted Telerik and Kendo UI License Key content in: [file path or environment variable name] |
TKL003 |
|
Unable to locate licenses for all products |
TKL004 | Your license is not valid for all Telerik and Kendo products added to your project. If you have already purchased the required license, then update your license key. |
Your subscription has expired |
TKL103; TKL104 | Renew your subscription and download a new license key. |
Your current license has expired |
TKL102 | You are using a product version released outside the validity period of your perpetual license. To remove the error message, do either of the following:
|
Your trial expired |
TKL105 | Purchase a commercial license to continue using the product. |
Telerik Reporting is not listed in your current license file |
TKL101 | Review the purchase options for the listed products. |
No Telerik or Kendo UI product references detected in project. |
TKL001 | If you use Telerik products and see this message, update the Telerik.Licensing package to version 1.4.9 or later. If you do not use Telerik products, remove the Telerik.Licensing NuGet reference from your project |