Reply To: How do I remove or update the password for the PST file?

[softwarekit]

If you want to delete or modify your PST password, you need to log in to Outlook, access the File menu, Account Settings, Data Files, select the PST file you want, click the Settings link, and finally, Change Password. To delete the old password, simply enter the current one and leave the new and confirm password fields empty. In case of lost or forgotten passwords, one handy application I’m aware of is Shoviv PST Password Recovery which can immediately recover the password without the risk of losing any data.
Read more- https://www.shoviv.com/unlock-outlook-password.html