: The .part3.rar suffix indicates this is the third volume of a set. To extract the contents, you must have all parts (e.g., part1.rar , part2.rar , and part3.rar ) in the same folder.
: Many guides shared under obscure filenames are password-protected. You may need to refer to the original source where you found the link to find the decryption key. 8CR85D8T85A87475A845.part3.rar
(often split into three parts).