If your PST size is under 2 GB then Scanpst is the right choice, but if it is above 2 GB, it will take long time to scan and the result will be repair job failure. Why...? Because it is the limitation of Inbox repair tool that stops it to fix the PST file which size is exceeded than 2 GB. So if you've to finish the job quickly and your PST file is oversized, try any professional Outlook repair tool and here is a one of them: ************