Repairing a Personal Folders file (.pst)

To repair the .pst file

On the Start menu, click Run.
In the Open box, type
drive:\Program Files\Common Files\System\Mapi\LocaleID\scanpst.exe

OR you can search the scanpst.exe and run

Click OK.
In the Enter the name of the file you want to scan box, type the path and file name given in the error message above.
Note You may not be able to use the Browse button to locate this file because it is located in a hidden folder.

To change the options for logging errors during the scan, click Options. If you choose Replace log or Append to log, the log file is saved to the same directory as the .pst file.
Click Start.
When the file scan is completed, select the Make a backup of scanned file before repairing check box.
Click Repair.
If the file is successfully repaired, you will see a Repair complete message. If the Inbox Repair Tool was unable to repair the file, you will need to use a backup of your file.