UndoPDF Excel Password Unlocker is designed to unlock Excel files which are protected by forgotten or lost passwords, to help the users who want to reopen and reuse the contents of Excel files. Regardless of the password length and the character set, the three attacks provided by UndoPDF Excel Password Unlocker ensure that you can unlock the password protected Excel files. The three attacks are dictionary attack, which will try all the passwords in a built-in dictionary or the dictionary added by a user; the brute-force with mask attack, which try passwords in a specified area; and the brute-force with mask attack (trying all possible combinations).

You can download UndoPDF Excel Password Unlocker by clicking Trial Version. The free trial version can only be used free for 20 times. If you want to own it, you can get the Full Version here.

The following is the interface of UndoPDF Excel Password Unlocker which contains five parts as illustrated below. The first part has six buttons. The second part is File name edit box and a button. The third part is four tabs and a tab control. The fourth part is a window displaying the input and output information and the last part is named Process Indicator. The most useful parts of the interface are the first and the third parts when you use UndoPDF Excel Password Unlocker to unlock Excel passwords.

For example, if you remember the password length, try the brute-force with mask attack. First click the button Open in the first part to add an input Excel file. Second, click the second radio box preceding Brute-force with Mask Attack in the third part. Third, click the tab Brute-force to switch to the corresponding tab control then select the minimum length and maximum length in the combo box under Password Length. At last, go back to the top of the interface and click the button Start.