@viveksrivastava Are you worried because you OST file got corrupted? Let's accept the fact that OST files gets easily corrupted, so why don't we change the OST file into any other format like Outlook PST?
Let's talk about how to repair the corrupted OST files. There is no free tool provided by the Microsoft to repair the corrupted file. You can use the MailsDaddy Exchange Server Suite that easily repairs the OST file and migrates them into PST format.
There is one plus point of this software that it not only repairs the OST file it repairs the other files too such as EDB, PST, etc. You can easily covert your Exchange server files into different formats like: Exchange to Exchange, Exchange to Office 365, Tenant to Tenant, EDB to PST, OST to PST and etc.
To know more visit: Repair OST file