@arochester Your statement is only true for older versions of Kali. Kali recently restructured user permissions and now loads a standard user by default. https://www.kali.org/news/kali-default-non-root-user/ @Ravichandran Your question is not clear. Do you believe that you set a password that is no longer working or can you not changes users? What version of Kali are you using? How recently did you download the install media?