MS Outlook is used to store data in PST files which contains contacts, emails, calenders, notes, tasks etc. But sometimes, it may possible that you will gst some error messages while accessing your PST files. The reasons behind this may be power failure, header file corruption issue, hardware or software issues, over-sized file etc. if you are getting some error message while running MS Outlook then you should repair it quickly to safe your PST file. To repair corrupt MS Outlook PST file, scanpst.exe tool is provided by Microsoft which comes in very handy. So user should not to be worry while getting any error message. Before repairing corrupt PST file, first of all know about Inbox repair utility and where it exist. It automatically install into your PC whenever you install MS Outlook package.