If you know the current password, Outlook allows you to remove or change it through the Data File Settings option. However, if you've forgotten the password, Outlook does not provide a built-in way to remove it without knowing the existing one.
In such cases, a professional MailsDaddy Outlook PST Password Remover Tool  is the most practical solution. It removes or reset the password from the PST file while keeping your emails, contacts, calendars, attachments, and other mailbox data intact. The tool preserves the original folder hierarchy and email properties, ensuring you can regain access to your Outlook data without modifying or losing any information.