Utilize the multifaceted Export Data OST to PST tool in order to fix how to Export Data from OST File if your Exchange server has been crashed (unpredictable power off or virus attack). It is recommended demo version of Export OST to Outlook software to make out the preview of OST to PST conversion which is simple to install and available free of cost. It supports almost all Win OS & Microsoft Exchange- 5.0/ 5.5/ 2003/2010 with more flexibility.