If you want to recover the password of a 7zip file, I recommend you to use the eSoftTools 7z password unlocker software. Users can unlock passwords without changing any data of the 7z file. It has 3 unique techniques for unlocking 7z passwords. It has a Brute force attack, a Mask attack, and a Dictionary attack for unlocking 7z file password. It can unlock lengthy passwords, mixed passwords, and symbolic passwords.