Exchange 2010 OST recovery question RRS feed

  • Question

  • If the main Exchange server (2010) is lost and a recovery is done to databases that are, say a week old, does the info in the OST (which is most up to date) propagate to the server, or does the old copy on the server update the OST?
    Tuesday, September 10, 2013 5:48 PM


All replies

  • hi,

    the old copy on the server update the .ost file if the user allows to sync with exchange server.

    to get the new mails user needs to export the mails from .ost to .pst and then from .pst user can import it into the mailbox database.




    Tuesday, September 10, 2013 7:10 PM
  • Hi,

    We can configure Outlook to keep a local copy of our items on our comptuter in an Outlook data file.

    This allows we to use Cached Exchange Mode or to work offline when a connection to the Exchange computer may not be possible or wanted.

    The .ost file is synchronized with the Exchange computer when a connection is available.

    As long as the data remains on the Exchange Server, we can re-create this .ost file on our computer without having to back up the .ost file.


    More details in the following article:

    Introduction to Outlook Data Files (.pst and .ost)


    Hope it is helpful




    Wednesday, September 11, 2013 7:46 AM
  • I totally agree with Darren that Old copy on the server update the .ost file. To export your all data from OST to PST you can try any third party OST PST conversion software. To get an effective Email conversion software visit
    Tuesday, August 12, 2014 6:17 AM
  • I just want to suggest another brilliant OST to PST Converter software that is fully capable to recover corrupted OST file and deleted items too. Before few months I was searching solution to recover my offline exchange mailboxes (.ost) then my friend mark suggested to use this application. It really helped me to gather my all OST file data into a healthy PST file.

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    Wednesday, May 20, 2015 11:29 AM
  • Do you want to recover OST to PST? So you can obtain Softknoll OST to PST Converter Software which fixes all errors of OST File to repair corrupt OST file and convert OST file data to PST file with EML, MSG and HTML formats.This software fastly remove OST file corruption issue and export OST database into Outlook (PST/EML/MSG and HTML) along with all emails properties, emails headers and email information etc.This application more smart tool to fix emails of Outlook OST file and restore OST file to PST file with emails properties or mailbox attachments such as-: Contacts, Calendar items, Notes, Scheduled tasks, appointments, journals, drafts etc. (To, Cc, Bcc, Subject, Date & Time etc.). You can quickly fastly run this tool to recover OST mailbox and also again open OST file database into new Outlook PST file, EML, MSG, HTML, MHTML, MBOX, RTF, TXT, DOC, PDF and MS Outlook profile. 

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    Saturday, December 30, 2017 9:12 AM
  • KDETools OST recovery converter is effective software to import OST to PST. This software complete convert of OST mailbox contents emails, attachment, calendars, etc. OST to PST converter software can support Outlook & windows versions.


    Tuesday, March 19, 2019 6:19 AM
  • If you are looking to convert OST to PST format, try this OST to PST converter tool to safely exports OST data to the PST format. Easy & Quick convert the OST mailbox to the Outlook PST format while maintaining the original data integrity.

    More Info;-

    Monday, July 22, 2019 4:22 AM