Outlook is one of the leading applications that are used for personal as well as business use. It is used both in small and large companies in private or government organization. It helps you to manage your work and makes it easier. It provides you a large space to store your vital information like emails, contacts, journals, attachments, notes, tasks etc. and saves them in personal storage table (.pst file).  This PST file stores all your important documents or files and secure them from the unauthorized user to access your important documents. To secure your PST files you need to set a password. You can choose any alphabets or any numbers to set a strong password. You even include special characters to make password more complicated so that no one can break it.