Last Updated: 08 Nov 2022 13:51 by ADMIN

Steps to reproduce: 

  1. Set the dark theme in Test Studio.
  2. Go to the Reports tab and choose some test runs to create a report.
  3. Export this to an image or html.

Expected: The x-axis and y-axis of the bar chart to be listed in the exported image. The colour legend next to the pie chart to be specified. 

Actual: These are missing. 

Note: If the export is performed from the light theme, the mentioned legend is output as expected.

Last Updated: 26 Oct 2022 13:39 by ADMIN
Created by: Jerry
Comments: 1
Type: Bug Report

Visual Studio 2019 crashes after opening and closing tests and working on them for some time. The memory that Visual Studio uses increases to the point where it slows down and eventually crashes. 

There are errors from VSTSExecution in the Windows Event Viewer log and other errors about faulting module "C:\WINDOWS\System32\KERNELBASE.dll" from the time of the crash.


Last Updated: 15 Sep 2022 12:25 by ADMIN

Test Studio version 2022.2.804.

Steps to reproduce

1. Use a tests, which enters text into an input field.
2. Use commas in the text to type. 

Expected: The text to get typed with all listed characters.
Actual: Commas don't get entered into the text field. 

Last Updated: 10 Jun 2022 12:04 by ADMIN

I have a test list where there are few tests in it and its set to re-run failed tests. If a test fails it re-runs and passes after re-run but the entire test list is marked as failed in HTML results. 

The same test list is showing green (passed) in Test Studio and Executive Dashboard. The issue is only in the exported results.

Last Updated: 25 Mar 2022 12:23 by ADMIN

TestStudio returns 0 for the number of tabs in a Kendo Angular TabStrip control. The behavior is reproduced on the demo page of the control -

Test Studio version is 2021.2.809.0

Last Updated: 25 Mar 2022 10:07 by ADMIN
Created by: Ingrid
Comments: 1
Type: Bug Report
Specific result file with web tests results cannot be exported to HTML format. If uploaded to the storage database, it is loaded in the Executive dashboard. But when trying to drill down the test results, there is a message that load test results are not supported. 
Last Updated: 23 Mar 2022 08:32 by ADMIN
On a specific machine a test cannot be executed in Chrome headless mode. The following exception is listed in the application logging: 

TestExecuteProxy.ExecuteTest() : EXCEPTION! (see below)
     Outer Exception Type: System.ServiceModel.FaultException
     Message: The server was unable to process the request due to an internal error.  For more information about the error, either turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the <serviceDebug> configuration behavior) on the server in order to send the exception information back to the client, or turn on tracing as per the Microsoft .NET Framework SDK documentation and inspect the server trace logs.
Last Updated: 21 Mar 2022 12:13 by ADMIN

1. Navigate to
2. Enter text in the autocomplete input and select the filtered country from the dropdown. 
3. The recorded steps are KendoInputValue enter text and KendoListBox select item and these are correctly recorded.
4. Execute the test. 

Expected: The steps should enter the text as it is listed in the step and select the country. 

Actual: The text from the KendoInputValue enter text step gets entered with capitol letters, although these are small letters in the step. If there is a capitol letter in the step, it is not sent at all. 

Example: KendoInputValue enter text 'Great Britain' actually enters 'REAT RITAIN'

Last Updated: 21 Mar 2022 12:13 by ADMIN

Test Studio 2022.1.215

Steps to reproduce: 

1. Record a test to navigate to

2. Enter some text in the field and select it with ctrl+A.

3. Press the Del button to delete it.

4. Execute the test.

Expected: The text should be removed with the step to press Del.

Actual: Del is entered as text in the text field.

Last Updated: 07 Mar 2022 11:30 by ADMIN
Double left click desktop action is not executed in Chrome Headless browser. The step passes, but the action is not triggered as expected.
Last Updated: 08 Dec 2021 13:40 by ADMIN

The is an issue with Connect to pop-up step, when the new tab immediately has a Logon dialog.

The Logon dialog handling takes priority and is handled before the Connect to pop-up step is executed. As a result, the identification and connection to the new tab is failing and Test Studio does not have access to any of its elements.

This issue is reproduced in Chrome and Edge Chromium browsers.

Last Updated: 05 Nov 2021 08:28 by ADMIN

Chrome Headless Failed to Select ByText when text value includes apostrophe.

The workaround is to select ByIndex or ByValue, if the value does not have an apostrophe.

Last Updated: 28 Jul 2021 12:27 by ADMIN

Using the Telerik.ApiTesting.Runner.exe to execute API tests cannot output results in junitstep format. It throws an error if using the -f junitstep option when running tests or test suite:

[ERROR] Not supported test results format
Parameter name: junitstep
Last Updated: 28 Jul 2021 09:06 by ADMIN

I am presently working on a government contract and on a virtual machine they can not give me administrator rights because of resent hacks a policy.

Can I please get a contact number and email address that I can have the system administrator talk to and try to get this problem fixed because I am a contractor

and have been working with them to get this fixed and we have not been able to resolve this and because of this no testing is getting done for automation.

Please help I have been using telerik for over 5 years and this is the first time I have had this problem


Thank you

Donna DeVries



Last Updated: 28 Jul 2021 06:56 by ADMIN

Telerik does not support test studio assemblies in .net standard and does not have a test runner in .net core. Considering all of our Azure DevOps and container agents are running linux we will not be able to use the tool.

Please add this feature to your product.

Last Updated: 25 Jun 2021 08:06 by ADMIN

The tests and test lists are visible in the Test Explorer and can be run the first time you open the Test Studio project in Visual Studio 2019. After any changes or rebuilding the solution, the tests and test lists disappear from the Test Explorer.

The issue is related to the latest version of Visual Studio 2019 and is recognized in build 16.10.2.

Last Updated: 17 May 2021 11:45 by ADMIN

Add the option to start quick execution of tests in Headless mode from Visual Studio.

Currently it is available from the Select Execution Browser window, but if you have selected a preferred browser this window is skipped.

Last Updated: 17 May 2021 11:43 by ADMIN

Navigate to the application under test and click a link that opens in a new tab. Then, click within the new tab to redirect it to a new URL and close the tab. 

The result is that the Close pop-up window step is successful, but the tab is not closed. This results in issues with the following steps in the test scenario.

Last Updated: 12 Apr 2021 06:54 by ADMIN

If using the coded solution to launch a WPF app for testing (sample code listed here), the ArtOfTest.Runner crashes.

Workaround: Replace the line


Last Updated: 17 Mar 2021 14:44 by ADMIN
The 'ColorAndBackground:BackgroundColor' style verifications in Test Studio v.2021.1.309 cannot be added in recording mode - the value from DOM tree is missing in the Verification builder. Previously recorded steps cannot be executed as well. 
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