New to Telerik Test Studio? Download free 30-day trial

Tests Not Executed in Chrome or Firefox


Test Studio Chrome or Firefox browser latest extensions have been installed and browsers properly calibrated. But it's still not possible to execute/record a test using those browsers and the following exception appears in the execution log.

[Date, Time] - Error attempting to exit runner. Error: System.IO.IOException: Pipe is broken.
   at System.IO.Pipes.PipeStream.WinIOError(Int32 errorCode)
   at System.IO.Pipes.PipeStream.WriteCore(Byte[] buffer, Int32 offset, Int32 count)
   at System.IO.Pipes.PipeStream.Write(Byte[] buffer, Int32 offset, Int32 count)
   at ArtOfTest.WebAii.Messaging.Process.PipeCommunication.WriteCommandToPipe(PipeCommand command, PipeStream pipe, Boolean waitForDrain)
   at ArtOfTest.WebAii.Design.Execution.RunnerController.Exit()


The exception indicates that the communication between the product and the browser extension has been broken and no further test recording or execution is possible. Such problem is most probably caused by an active firewall or anti-virus software on the testing machine. Try to stop or deactivate that software to resolve the problem.

In this article