Thank you for your prompt answer! I’ve watched the videos and went through the unit test section thoroughly and learned new things, however the initial issue hasn’t been solved. I created a new, blank project with only the sample tests in it and tried to execute those cases but the situation is the same. I can see the configured sample test items but that is just because there is a test configuration xml by default in the working directory. Once I delete the xml file, I cannot retrieve them. I also tried configuring Opc Ua, changed TCP port number and tried to reload available test items with the new configuration… unsuccessfully.