A few days ago I was working on Microsoft Outlook application suddenly my system went shut down, when I start my system I have got my OST mails are missing. I tried many OST to PST software to recover OST mails, but I failed. Then my colleague suggests me Kernel third party software “Exchange OST to PST” software. I have easily downloaded and start recovery mode, within a matter of minutes I have gotten all my important mails. Thanks buddy for the suggestion.