First of all, thank you for your time to take a look. I just installed and testing right now, Added input data and used excel as a source data and ran it. Instead of getting preview of source file right bottom, I am getting following error message. Start: Designer x64: Started running at 04/04/2022 18:40:59 Error: Designer x64: The Designer x64 reported: AlteryxProcessManager::Start: User Canceled End: Designer x64: Finished running in 30.2 seconds with 1 error Your advice will be really grateful. Thank you