PstPassword

PstPassword is a small freeware utility from NirSoft that recovers passwords from Outlook PST files. The program works with Outlook 97, Outlook 2000, Outlook XP, Outlook 2003, and Outlook 2007. You do not need an installed Outlook client to retrieve passwords, you only need the PST file.

Passwords of PST files can be easily recovered because their encryption is very weak. Outlook stores only a CRC32 value of the password in the file. Due to the peculiarities of this algorithm, you can find several passwords that will open this file, even if these passwords do not coincide with the one you have specified. PstPassword displays the found passwords in the grid of the main window of the program, and for each file three passwords are provided. One of the passwords may be the one you specified, but it may also be that none of the password variants will match the original one. The only thing that can be said for sure is that any of the three passwords will open your PST file.

In order to run the program it is enough just to unpack the archive, installation is not required. To translate the interface, you can create a language file with the /savelangfile parameter or download a ready translation and put it into the folder with the program. After starting the program, it will find all the PST files of the current user, which are located at Documents and Settings\User Name\Local Settings\Application Data\Microsoft\Outlook, or in Documents\Outlook Files for newer Outlook versions. If you need to select another file, press F7 or just drag it to the main program window.

PstPassword allows users to recover lost or forgotten passwords from their PST Outlook files easily.