With the help of vMail OST to PST Converter tool, you can convert single and multiple files without disturbing the integrity of the database. The free vMail OST to PST File converter software to transfer OST files to the new Outlook format. This OST export tool is 100% capable of restoring ms outlook OST file files and also exporting OST to Office 365 and live Exchange Server. Import exported PST file into Outlook application to access all your emails, contacts, calendar and attachments, etc.

Know more info- https://www.vsoftware.org/blog/fix-error-have-been-detected-in-ost-file.html