You should be run Inbox repair tool which is scanpst.exe first find your PST File and run with scanpst.exe may be possible your pst is also corrupte this is also one reason of outlook not open.
Another thing OST File capacty are 2gB while it's more then it so it too one of the reason any way if still problem is not solved .
You can try any third party data recovery software to reair and convert you OST File .
I used Outlook 2010 with exchange server everything going good but few days ago My Outlook's OST database become unreadable my be it's corrupt and I have more than 2gB data of OST can you please give some suggestion ,how i can recover my OST File .
As i suggest by a friend that i need of OST to PST Converter Tool.
Is This True?
Any Please help my to recover my Outlook.
Thanks In advance.