Misleading error message “[TKL101] Progress® Telerik® JustMock is not listed in your current license file.”

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Last Updated: 27 Mar 2026 11:10 by ADMIN

Valentina

Created on: 07 Jan 2026 14:34

Category: Licensing

Type: Bug Report

Misleading error message “[TKL101] Progress® Telerik® JustMock is not listed in your current license file.”

When TELERIK_LICENSE_PATH points to a path where the license file does not exist or cannot be accessed, Telerik JustMock throws:
"Telerik.JustMock.Core.Licensing.LicenseException: Warning: [TKL101] Progress® Telerik® JustMock is not listed in your current license file."

This is misleading. The message suggests the license file was successfully read and its content does not include JustMock, while the actual problem is that the file was not found or could not be opened/read. The behavior was detected in an Azure DevOps pipeline.

2 comments

ADMIN

Valentina

Posted on: 27 Mar 2026 11:07

To resolve the issue, we recommend verifying these two aspects:

Ensure that the license key is valid and active. It is advisable to retrieve it directly from your Telerik account for accuracy.
Confirm that the path to the license file is correct and accessible by the pipeline agent, if TELERIK_LICENSE_PATH is in use.

Regards,
Valentina
Progress Telerik

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Scrum

Posted on: 26 Mar 2026 18:27

I'm currently trying to upgrade us from 2025.1 to 2026.1, and while I've been able to navigate the license on the server for WPF, JustMock is reporting the same thing, saying that the license isn't listed. I'm not sure what else to do at this point. (Originally I'd thought it was because I wasn't including the license in that stage of my pipeline, but after resolving that issue, the problem persisted). I'm not seeing anything documented for including the license in the Telerik JustMock Tests v.2 DevOps Extension, so not sure where to go from here.