Remove Password from PST File: Unlock Outlook PST Securely
-
Written By
Aaradhya Jain -
Approved By
Shivam Rathore -
Updated on
September 13th, 2025 - Read Time
6 minutes
User Query: I have an old Outlook PST file that is password-protected, but I forgot the password. Now I need to access my emails urgently. Is there a way to remove password from PST file without losing any data?
Introduction: Microsoft Outlook allows you to set a password on PST files to protect sensitive emails and attachments. While this is the best way to keep your data safe, forgetting the password can lock you out of your mailbox. Many users face this issue when they switch systems, restore old backups, or work on shared PST files. In this blog, we’ll share practical methods to remove forgotten password of Outlook PST file without corrupting the data. You will learn manual techniques and a professional DRS PST Password Remover Tool that works even if you have multiple locked PST files.
What is a PST File?
Microsoft Outlook uses a PST (Personal Storage Table) file to store emails, contacts, calendars, and attachments on your computer.
- Use case: Backup and access Outlook data offline.
- Issue: If a PST file is password-protected and you forget the password, you cannot open it in Outlook until the password is removed.
Easy Steps to Remove Password from PST File
- Initially, download & install the DRS Outlook PST Remover Tool.
- Now, choose: Select Files to add single or multiple locked PST files.
- Then, click Remove Password to unlock all the files.
- Also, you can set the new password by choosing: Set Password.
- In the end, enter your New Password and click Ok.
Why Decrypt Outlook PST File?
- Access archived emails for work or legal needs.
- To move PST data to another Outlook profile.
- Save time by avoiding password prompts every time you open Outlook.
- Moreover, restore data from a backup.
Manual Method to Remove Password from PST File
Outlook has an in-built utility called pst19upg.exe (for older PST formats) and MFCMAPI (for Unicode PST). Using MFCMAPI, you can clear the password. Here is how you can perform it:
- First, get the latest version of MFCMAPI from its official GitHub page and extract it.
- Now, launch Outlook and note which profile contains the locked PST file.
- Open MFCMAPI and click Session > Logon. Choose the Outlook profile you use.
- After that, in the list of stores, find the PST file that is password-protected.
- Then, right-click the PST store and select Open Store Properties.
- Find the property PR_PST_PASSWORD. Double-click it and set the value to 0. Save and close MFCMAPI.
- Lastly, open Outlook and check if the PST file opens without asking for a password.
Limitations: Manually Unlock Outlook PST File Password
- Works only if you have access to Outlook, and the PST is not severely corrupted.
- It requires technical steps and is also risky for beginners.
- This process can contain multiple PST files at once.
- Moreover, time-consuming for large files.
Verified Tool to Remove Password from PST File
If you have several password-protected PST files, using a reliable DRS Password Remover Software is the safest choice. This tool is specifically designed to unlock passwords from multiple PST files. With the help of this tool, you can set the new password. It eliminates all the limitations of the manual method and offers you a hassle-free result. Additionally, it has a simple interface, which means every user can easily use it.
One-Time Service Available
If you only need to remove the password from multiple PST files at once. There’s no need to use any tool or long steps. Just send your locked PST files to our support team, and we’ll handle the procedure. In addition, this tool is safe to use.
Step-By-Step Guide to Decrypt Outlook PST File
- Firstly, launch the DRS PST Password Remover Tool on your PC.
- Then, pick: Select Files to browse the PST file and select it.
- After that, click on the Remove Password option.
- Also, you can set the New Password by choosing: New Set Password.
- In the end, enter your New Password and click OK.
Key Features to Remove Password from PST File:
- Unlocks multiple password-protected PST files in one go.
- No data loss or file corruption.
- Option to set a new password after removal.
- Works with ANSI and Unicode PST files of any size.
- Also, recover if Outlook data file password lost.
Real-Life Scenario:
If you are tech-savvy and have a single PST file, the manual method works fine. But for a quick, risk-free solution (especially for bulk files), a professional PST Password Remover tool is highly recommended. Furthermore, let’s discuss a real-life scenario:
A user named Aly, an IT administrator in a mid-sized company, had multiple PST backups from former employees. Most files were password-protected, and no one remembered the passwords. Manually unlocking them with MFCMAPI would have taken days. Instead, Aly used the DRS Remover Tool and unlocked all PSTs in a single batch without any hassle.
How to Open Encrypted File in Outlook?
- Encrypted Emails: Open the email in Outlook → click Read the Message → sign in with your email/Microsoft account → view the decrypted message and attachment.
- Password-Protected PST Files: Go to File > Open Outlook Data File → select the PST → enter the password. Forgot it? Use a PST Password Remover Tool to unlock it.
- Encrypted Attachments: Download the file → open it → enter the password shared by the sender (or sign in if IRM is used).
Conclusion
In this complete blog post, we explored several methods to remove password from PST File. Forgetting a PST password doesn’t mean losing access to your emails forever. If you use MFCMAPI manually or a professional tool, you can regain access securely. Also, for a hassle-free and secure solution, go with the professional tool. It saves time, supports multiple files, and ensures your Outlook data remains intact. Moreover, download the free version to understand its features.
Frequently Asked Questions
Ans: Yes. A professional PST Password Remover tool allows you to unlock multiple PST files at once, saving time and effort compared to the manual method.
Ans: No. With a professional tool, you don’t need the old password. The software removes the existing password and gives you the option to set a new one if needed.
Ans: No. First, you need to repair the corrupted PST file using the Inbox Repair Tool (scanpst.exe). Once the file is healthy, you can remove the password.
Ans: Yes. A trusted tool removes the password without altering, deleting, or damaging your emails, contacts, calendars, or attachments.
About The Author:
I, Aaradhya Jain, a technical content writer at DRS Solutions, specializes in delivering clear, practical guides on data management, migration, and recovery tools. With a detail-oriented and user-first approach mindset, I transform complex processes into actionable insights for IT professionals and decision-makers.
