In case your OST file becomes inaccessible and you need to convert OST to PST then make use of quick OST to PST exporter tool. It is an efficient third party tool which is the finest solution to access damaged OST and shift entire data to PST file. OST file converter program brilliantly works to repair OST file and export OST to PST, EML, MSG and HTML formats. Microsoft OST to PST converter tool split OST file during OST to PST conversion.