How-to clear the Outlook email address autocomplete cache? If you just need to clear specified autocomplete cache in Outlook, please do as follows: Shift to the Mail view, and click Home > New Email to create a new email. Click on Browse and specify a storage location for the new PST file. Then select the folder that needs to be exported to the new PST. Click on Personal Folder File (.pst) and click on Next. How do you transfer outlook settings to a new computer? Follow the steps below: Open MS Outlook and click on the File menu.