Select Data File Management or Account Settings under “ Tools”.In case if you have lost Outlook data then you can restore data again by using backup file. Therefore, it is best to backup Outlook data before losing any precious emails and other data. and finally ends up with data loss from it. However, MS Outlook is highly prone to corruption due to various things such as virus attacks, application error, etc. Apart from this, it stores other information also such as contacts, tasks, notes, RSS feeds, calendar items, journals, etc. With the help of MS Outlook, you can send and receive emails to and from anyone who as an email account. MS Outlook is been used to manage personal information as well as to keep in touch with other people through emails. Microsoft Outlook is an email client application comes standard with MS Office suite.