What is OST File?
OST file basically an offline storage data files in MS Outlook. Working offline in MS Outlook become possible through the OST file and synchronizes the changes with the exchange server the next time they connect. If anyone doesn't have reliable internet connectivity still the work can easily be done by the use of MS Outlook.
How the OST file becomes corrupt?
I know being an Outlook user, you must have come across the Outlook OST files corruption and accidental deletion scenarios. It is a rare problem but may affect your entire MS Outlook badly. At that time your OST file becomes inaccessible due to severe corruption. When OST file becomes inaccessible then there is a need for immediate Outlook recovery solution.
The following errors occur while opening the damaged, inaccessible or corrupted OST file: