Is your OST File got corrupted? There a quantity of some helpful software within the market called OST to PST Software by that you will be capable to repair and recover not working or lost OST files. OST to PST software which is use for recover or repair .ost files however use for changing them into .pst files format. you'll be able to obtain additional info concerning this tool from here
http://www.outlookosttopst.org/
http://www.osttopstrecovery.org/