Incase you are stuck with Outlook and would wish to fix an OST data file you can use WebbyAcad OST Recovery Software. It can also efficiently perform the recovery of Ost files which are damaged or corrupted and does not require the outlook software to rebuild the emails, contact and other items in the mailbox. Just install the software, open it and choose the OST file that you want to repair and then click start repair button of the software. When it is done you can save each of the recovered data to a new PST file, hence enable easy access to in outlook. This method is effective and straightforward, to not allow much data loss when performing the recovery process.