Run the command john –test to test your computer’s capabilities.Open a command prompt as administrator and navigate to the C:\John directory.Extract the ZIP file and copy the John folder to the C:\ drive.Download the latest version of John the Ripper from the official website.To use John the Ripper on Windows 10, here are the steps: It uses a combination of techniques to detect weak passwords. John the Ripper is a free and open-source password cracking tool available for Windows 10.