You may be in the position in which you have download something in the RAR file format, but when you atempt to open and extract it, a display appears asking for a password before proceeding. This means that this file is encrypted and locked. You may not have the password readily available. Your best availabe option is to use a program such as RAR Password Unlocker to decrypt the file and retrieve the password for you, so that you can extract the file contents. Tips Writer Bio

How to Open an Encrypted RAR File - 68