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.

The implementation of the 2025 product licensing requirements will occur in two phases:

• Phase 1 - Starting with the 2025 Q1 release, a missing or invalid license logs a warning in the build log and the report will show a watermark with a trial message. The trial distribution won't show the trial message when activated with a trial license. There will be no change in the commercial distribution.

• Phase 2 - Starting with the 2025 Q2 release, there will be only one distribution of the product with different licenses. A missing, expired, or invalid license will result in:

  • A watermark appears on each report document page.

  • A warning message appearing 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 license key is detected	TKL002	Install a license key to activate Telerik Reporting and remove the error message.
Invalid license key	TKL003	Download a new license key and install it to activate Telerik Reporting and remove the error message.
Your subscription license has expired.	TKL103; TKL104	Renew your subscription and download a new license key.
Your perpetual license is invalid.	TKL102
Your trial license has expired.	TKL105	Purchase a commercial license to continue using the product.
Your license is not valid for the detected product(s).	TKL101	Review the purchase options for the listed products. Alternatively, remove the references to the listed packages from package.json.

Starting with the 2025 Q2 release of Telerik Reporting, all conditions above will be treated as errors.