OSS_Ja_JP

First of all, you need to look for the scanost.exe on the local machine
In Outlook 2007 : C:Program Files\ Microsoft Office\ Office 12
In Outlook 2003 : C:Program Files\Common Files\Systme\MSMAPI\scanost.exe
In Outlook 2002/XP : C:Program Files\Common Files\Systme\MAPI\scanost.exe
In Outlook 2000 :C:Program Files\Common Files\Systme\MAPINT\scanost.exe

Now, simply right-click scanost.exe application icon and run it as an administrator.
Here, you need to choose the profile containing damaged OST file.
Select the folders that you want to scan or you can choose Scan all folders option also.
After that, check the Repair errors checkbox to fix the issue.
Then, click on the Begin Scan option and start the scanning process of corrupt OST file.
As the scanning process completed successfully, “OST repaired successfully” message will pop-up on the screen. Click on the OK button to complete the process to repair Outlook OST file.

This May Help,
Peter

This blog helps you to easily recover corrupt OST files. It has provided different approaches for recovering OST files. It has utilized methods like OST file recovery via ccanpst.exe, running Outlook in safe mode to repair Outlook data file, disabling Add-ins and troubleshooting OST files, and an automated approach to repair Outlook mailbox. So read the blog carefully and perform any method according to your choice
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​Read blog here:- https://www.recoveryandmanagement.com/recover-corrupt-ost-file/