If you want to fix an error in an oversized OST file, here I suggest you get the SysInspire OST to PST converter tool. This tool can convert OST files into multiple file formats such as OST to PST, EML, EMLX, Office 365, Yahoo Mail, Gmail, vCard, etc. it has a demo version that can allow users to convert 25 items from each folder. It has technical support and all users get help by email or live chat. It converts OST files into PST for free. It exports emails with attachments. This tool is 100% safe and free. It supports all versions of Windows OS. This tool does not require installing MS Outlook on users ' PCs.
