By using SysInspire PST Converter software, you can fix all errors of MS Outlook. They can Repair Outlook PST files and convert PST files into EML, EMLX, Zimbra, MBOX, vCart, ICS, and many more other formats. They also have a date-filter feature on which you can restore data between selective dates. It supports all the versions of Windows OS like Windows7, 8, XP, Vista, and 10, etc.
Read more:-Repair Outlook PST

Repair an Outlook data file (.pst) file:
Exit Outlook and browse to one of the following file locations:
Open SCANPST.EXE.
Select Browse to select the Outlook Data File (.pst) you want to scan. If you need help locating your Outlook Data File, see Locating the Outlook Data Files.
Choose Start to begin the scan.
If the scan finds errors, choose Repair to start the process to fix them.
When the repair is complete, start Outlook with the profile associated with the Outlook Data File you just repaired.
Hope You Find This Useful, Peter