If you have any confusion that “how to fix OST file corruption” or finding most usable tool to repair damage OST File, Here is some free methods which can be used to convert data from offline OST file to usable PST format, follow the steps carefully and do make a copy of OST file before starting the process.
Check the conversion steps, here:- easytechtools.com/2016/10/03/smart-ost-to-pst-conversion