License Activation Errors and Warnings
Starting with the Q2 2025 release, Telerik JustMock will display specific warnings and errors if used without a valid license or with an invalid one. This article explains what defines an invalid license, the possible reasons behind it, and the related warnings and errors you might encounter.
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 product versions released outside the validity period of your license.
- Using an expired trial license.
- A missing license for Telerik JustMock.
- Not installing a license key in your application.
- Not updating the license key after renewing your Telerik JustMock license.
License Warnings and Errors
When working on a project with Telerik JustMock and encountering an expired or missing license, the test execution will display the following errors:
| Error Message | Message Code | Solution |
|---|---|---|
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 resolve this issue, you can either: |
| - Renew your license, then download a new license key and use it to activate the controls. | ||
| - Downgrade to a product version included in your perpetual license as indicated in the message. | ||
Your trial expired. |
TKL105 | Purchase a commercial license to continue using the product. |
Telerik JustMock is not listed in your current license file. |
TKL101 | Review the purchase options for the listed products. |