http://itknowledgeexchange.techtarget.com/itanswers/cannot-open-a-ost-file-in-outlook-2007/ Fri, 24 May 2013 19:50:07 +0000 hourly 1 http://itknowledgeexchange.techtarget.com/itanswers/cannot-open-a-ost-file-in-outlook-2007/#comment-101273 rechil Thu, 05 Jan 2012 09:23:41 +0000 #comment-101273 OST file is related to exchange server and associated with a mailbox on it. If ur profile could not redirect to that particular mailbox, u never unlock ost. There is no method to open the standalone ost file directly in OL since it is encrypted with the ES mailbox(as far as my knowledge). U need to connect the ost file to the original ES mailbox, read the content and move the information to the pst file. May be some 3rd party tools can help u. Though I am not sure whether is it helpful, but u can try MS Reference

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