Microsoft Outlook allows one to work offline when the connection to exchange is severed using OST files which store the changes made and later sync them up with exchange server. When OST corruption occurs the only feasible recovery mechanism is to use OST to PST Converter.

OST to PST Conversion:

Since you've come here looking to tackle OST Corruption let me not disappoint you and get straight to the point. For managing OST corruptions the best utility you could possibly find out there is EdbMails.

EdbMails can work with most versions of Outlook whether it be 32bit or 64bit deployments and effortlessly recover all the information possible. This is why it gets the most recommendations from experienced hands globally. I've tried many a OST Recovery tools and let me list what me overlook them for this write up:

Cumbersome interface and navigation.
Slow export speed.
Multiple unnecessary user intervention requirements.
No Non-English Unicode support.
Incomplete Recovery (lost mails and contacts)
Some have file size limitation



EdbMails on the other hand turned out to be simply perfect. No issues exporting large files. Excellent export speed. A modern and easy to navigate user interface. Extensive filtering options to export exactly what you need. A free OST to PST trial version to test out all the features before buying the licence for full recovery. To top it all there is 24x7, 365 days technical support on standby for any queries you may have.