MS Outlook is the world's most popular email client program used to manage the Exchange emails that improve business performance. MS Outlook stores its email files in a PST file format, and this file must remain secure so no third party can access it without permission. The best technique for securing this file is to protect it with a password. However, what happens if the user forgets the password? In this article, we will examine two methods to break the PST file password if the user forgets the password:
- MS Outlook Method
- Third-Party Software Method
Method 1: MS Outlook
- Open MS Outlook.
- Click on the File menu.
- Click on Account Settings (see Figure 1).

- From the open dialog box, click on Data Files.
- Select the PST file for which you want to break the password (see Figure 2).

- Click on Setting.
- In the open dialog box, click on Change Password (see Figure 3).

- Fill the fields. Note: No need to fill the old password field.
- A dialog box will appear with confirmation of the password change.
Method 2: Third-Party Software
Here, I will explain how to use the best PST Password Remover software named MailsDaddy PST Password Remover.
- Download the software from https://www.mailsdaddy.com/pst-password-remover.
- Install the software, then run it.
- Once the program opened, click on the Browse button, and select the desired password-protected PST file for which you need to remove the password (see Figure 4).

- Click on the Select Destination button to save the PST file.
- Click on the Remove button to remove the pre-applied password, which you have already forgotten.
- A dialog box with confirmation of password removal will open.
- Press OK and access your password-free PST file.
Note: With this software, you can also protect an unsecured PST file by applying a password to it. For this, you should follow these simple steps:
- Open your "MailsDaddy" software.
- Click on the Browse button to select the password-protected PST file.
- Click on the Select Destination button to save the password-protected PST file.
- Click on the Reset Password button to change the password.
- Fill in the new password and confirm the password field.
- A confirmation dialog box will open after resetting the password successfully.
- Press OK and access your password-protected PST file.
System Specifications:
- Processor: 2.4Gz Processor.
- RAM: 1GB RAM.
- Disk Space: 34 MB
- Outlook Support: MS Outlook 2002, 2003, 2007, 2010, 2013, 2016, and later versions
- Operating system: Windows 10, 8, 7, 2003, 2000, XP, and Vista
Conclusion
In this article, I have explained how to break PST file passwords and unlock PST files. Using these methods, the user can change a PST file password or remove it and reset the Outlook data file's password. The third-party software, "MailsDaddy PST Password Remover," is the best method to use because it is simple, trustworthy, and time-saving software. It is also available in a demo version that has some restrictions.