
Microsoft Outlook gets installed into your computer system by either from the Outlook Disk or with the Microsoft Office Disk then it installs the Scanpst.exe file too into your computer system. According to the different operating system the location of the file changes but generally it is available at the location:
C:\Program Files\Common Files\System
Over here you can find MSMAPI or MAPI folders and in one of them you can find the folder named 1033. It finally makes the complete path of the Scanpst.exe as:
C:\Program Files\Common Files\System\MAPI\1033\
You can use the windows search option to find the scanpst.exe but if they are not found in the search results then it means they are hidden. You can change the folder options to set the hidden files visible and again search for scanpst.exe
If unfortunately you can not find the file from your system then there are chances that due to any mishap or problems like virus attack the exe has been deleted or lost. In this situation you don’t have any option get the file from your system. Over here you can try to extract the Scanpst.exe from the cabinet file from Microsoft Office CD. It is a little tricky step and for the experienced users only.


Other option is to download Scanpst file from the external source like Websites running on internet. You should try to download it from the Microsoft's official website.
After Scanpst exe download, you can use it on those corrupted, damaged PST files to recover the data present on it but before using the Scanpst.exe you must need to take the backup of the PST file. It’s because this exe also cause some files deletion from the PST file and that may not accepted by everyone. There are chances that it deletes the files that you must need and for that only you are performing the complete scan process with this tool.
Further if the PST file has been deleted, scanpst.exe does not help you because it is incapable of recovering the deleted PST files. The Scanpst only repair the corrupted header but if the actual data has been corrupted then the file will be deleted causing the loss of file after this scan. So people must take the backup before performing any kind of recovery.
The most suitable way to recover the files without any loss is to use professional software that is made to recover deleted or lost PST files and repair the corrupted PST files. For this Outlook PST Repair is the right choice. It just do all those things that are necessary to get back the PST files. It scans thoroughly to your complete hard drive to find all the PST files that were corrupted, lost or deleted and prompts for the recovery as per your input. Just choose the pst file and everything else will be very simple. So apart from download scanpst you can use this professional tool to get back the PST once again.

It's really difficult to get back Outlook data after a system crash. But I easily get back the entire lost data even after my system crash with the help of Outlook PST Repair software.
Thank you again for the great help!
Allen 'Oahu'