I'll prefer you to use the Yodot OST to PST converter which is a great conversion tool to fix OST file issues. It's a great utility and I believe it since i have used it.
08 December 2017
I will suggest you to use Yodot OST to PST converter to repair damaged OST file as it helped me in past when i lost access to my OST file. It fixed my OST file by safely converting it to PST and it gave me access to all my emails and Outlook data successfully.
05 December 2017
Thanks for providing such wonderful OST to PST converter. This OST conversion tool recovers all components from Offline OST folder and saves into healthy PST file. When I failed to access my OST folder, I converted it into PST file, using this advanced program. No glitches, no difficulty in using, absolutely perfect software for converting OST file.