Outlook makes use of PST and OST files. This is a database that stores your emails within a single file. These files are prone to corruption and can cause all kinds of problems when accessing your mailbox. Symptoms may include that new emails are not displayed or the wrong information is displayed when you select an email.
Review the following information to recreate or repair your Outlook data file using scanpst.
https://support.office.com/en-us/article/Repair-Outlook-Data-Files-pst-and-ost-64842a0a-658a-4324-acc6-ef0a6e3567cd?CorrelationId=64cea4c1-1b88-495d-8e9b-b0227dc975e4&ui=en-US&rs=en-US&ad=US
