Find Outlook PST Password: Remove or Unlock Forgotten Passwords

You set a password on your Outlook PST file months or years ago. Now you can’t remember it. Outlook just shows a password prompt with no hint, no recovery option, and no way to bypass it through the interface. You’re locked out of your own data.

This is a common situation. The good news is that PST passwords use a simple hash mechanism, not strong encryption. That means a PST unlocker tool can remove the password from the file without needing to know what the original password was. This guide covers exactly how to do that.

Why PST Passwords Are Hard to Recover

Outlook stores PST passwords as a hash value in the file structure. It doesn’t use the password to encrypt the actual email data inside the PST. This has two practical consequences.

First, you can’t “find” the original password string. The hash is a one-way transformation. There’s no utility that reliably reverses the hash back to the human-readable password you originally set. Password guessing tools exist but they’re slow and succeed only against weak passwords.

Second, because the data inside the PST is not encrypted, a PST unlocker tool can remove the password flag from the file structure without decrypting anything. The email content was never encrypted to begin with. This is why the removal approach is fast and doesn’t risk data corruption.

If you remember the password, you can remove it yourself in Outlook. If you’ve forgotten it, use the Turgs PST Unlocker as described below.

Remove a PST Password You Know

If you still know the current password, removing it takes about 30 seconds in Outlook:

1. Open Outlook and go to File, then Account Settings, then Data Files.
2. Select your PST file from the list and click Settings.
3. In the Settings dialog, click Change Password.
4. Enter the existing password in the “Old password” field.
5. Leave both the “New password” and “Confirm new password” fields blank.
6. Click OK. The password is now removed.

This only works when you know the current password. If you don’t, skip to the section below.

Remove a Forgotten PST Password

The Turgs PST Unlocker removes the password from the PST file without requiring the original password. Here’s how to use it:

Step 1: Download and install the Turgs PST Unlocker on your Windows PC. Launch the application.

Step 2: Click Add File or Browse to locate your password-protected PST file. The tool loads the file and displays its details.

Step 3: The tool shows your PST file loaded and ready. You can preview the contents here to confirm it’s the right file before proceeding.

Step 4: Click Remove Password or Unlock. The tool removes the password hash from the PST file structure. The process takes seconds for files under a few GB and a few minutes for very large PST archives.

When the process completes, open the PST file in Outlook normally. You won’t be prompted for a password. All your email data, attachments, contacts, and calendar items are intact. The tool removes only the password flag, not any content.

PST Password vs. OST File Encryption

It’s worth understanding the difference between a PST password and OST file encryption, because they’re fundamentally different problems.

A PST password is a lock on the file that prevents Outlook from opening it without the correct input. But the data inside the PST is not encrypted at the byte level. A PST unlocker removes the lock. This is fast, safe, and doesn’t touch the email content.

An OST file is different. OST files are created by Exchange or Microsoft 365 and are encrypted at the profile level. The encryption is tied to your Exchange account credentials, not a user-set password. You can’t remove OST encryption with a PST password tool. For OST access problems, you need to either reconnect to the Exchange account or use an OST to PST conversion approach. If you’re dealing with an OST file access error, the guide on OST file errors covers the most common scenarios.

In short: PST passwords are removable. OST encryption is not removable via a password tool. Make sure you’re working with a PST file, not an OST file, before proceeding.

Limitations to Know

Frequently Asked Questions

Can I remove a PST password without any software?

Yes, but only if you know the current password. Open Outlook, go to File, Account Settings, Data Files, select the PST, click Settings, then Change Password. Enter the old password and leave the new password fields blank. If you’ve forgotten the password, you need the PST unlocker tool to remove it without the original.

Does removing the PST password delete any email data?

No. The Turgs PST Unlocker removes only the password flag from the PST file structure. All email messages, attachments, contacts, and calendar items remain completely intact. The tool does not touch the email content during the unlocking process.

Does PST password removal work with all Outlook versions?

Yes. PST files from Outlook 97 through Outlook 2021 and Microsoft 365 all use the same password hash mechanism. The Turgs PST Unlocker handles PST files from any of these Outlook versions without compatibility issues.

What if my PST file is corrupt as well as password-protected?

Repair the PST file first. Microsoft includes a free tool called SCANPST.exe (the Inbox Repair Tool) with every Outlook installation. Run SCANPST.exe on the corrupt PST, complete the repair, and then run the Turgs PST Unlocker to remove the password.

Is it legal to remove a PST password?

Removing a password from a PST file you own is legal. Removing the password from someone else’s PST file without explicit authorization may violate computer fraud laws depending on your jurisdiction. Only use this tool on PST files you own or have permission to access.

Can I view the original PST password in plain text?

No. Outlook stores PST passwords as a one-way hash. No utility reliably reverses this hash back to the original password text. The practical solution is to remove the password rather than try to recover what it was. Once removed, you can set a new password if needed.