If you get an error that your outlook .pst file is corrupted and outlook cannot start because the primary mail file is corrupted, this is how you repair the .pst file…
This is the location of your scanpst.exe file which should be run as administrator to get the following GUI
After the tool starts, locate your pst file and click on the start button to start the repair.
After all the phases completes, you will be prompted that the repair has been done and completed. Restart your Outlook and everything should be fine.