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Teststand Python Step Error

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I'm a new user of Teststand and I am attempting to set up a step to call a Python script. But in the Python Step Configure window I'm getting the error "Invalid Python Version. Make sure required version of python is installed and added to PATH environment variable." I don't know what this means or what I need to do to make this work.


Any suggestions for fixing this would be much appreciated!

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Accepted by topic author kclayt88

TestStand supports CPython interpreter. Hence, make sure the following is done:


  • Install python from
  • Make sure bitness of TestStand and installed python match
  • When installing python from, there will be an option to add the python path to the environment variable. This is disabled by default and you should enable it when installing.



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