If you want to repair your corrupt PST File free, then you should use Inbox Repair Tool (Scanpst.exe) which is a free tool developed by Microsoft. The Inbox Repair Tool will repair your corrupt PST File, but this tool fails to repair PST if your Outlook Data File is highly corrupted.
I would like to suggest you 3rd party like
http://www.recoverydeletedfiles.com/...pair-tool.html tool is excellent to use as this is very effective and completely restore all the PST file.