To repair PST files suffering from any sort of corruption issues, use Outlook PST repair tool.
When you launch the software, the Select Corrupted Source PST file window appears by default. You can Browse for Source PST file or Search for it.
After the corrupt PST file is repaired, all the recovered emails are listed in a tree like structure in the left pane. Select any folder from the list to view its content in the right pane.
Select output type for the recovered emails to save them either in Outlook or in Outlook Express format.
On saving the emails, the window displays the current status of the saving process.