Feb 182008

A lot of users nowadays face the necessity to convert all information from Microsoft Exchange (files with the .ost extension) into files of the Microsoft Outlook mail client (.pst files)

First you need to Download ost2pst.exe file from here and install this program

Once it opens you should see similar to the following screen here you need to select the .ost file to convert .pst format

Once this finished you are ready to import .pst file in outlook

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  72 Responses to “How to Convert OST to PST format for outlook”

  1. See do not copy directly the ost file from your outlook. to take backup from old email to new email of your ost file. Use outlook import & export. First export your email to a location when its finish then import in new outlook as a pst. So no need to make your ost file to pst. Simple.

    for more help write me firozmahmud58@yhoo.com

  2. To convert .ost to .pst file you must use a third party utility. There are quite a few available in the market at very reasonable prices. The one i have used is Kernel for Exchange OST to PST


  3. After I used this, appear the internal error (code=00000000E) as well. Then i tried demo version of another tool from
    http://www.outlookost.com/. it wrks perfect for me, even it supports exchange server 2007 as well

  4. This program does not work in Outlook2003/2007

  5. Solution for office 2k7:
    - Open outlook with exchange account
    - make sure you are offline (ex. turn off lan)
    - add clear .pst file as a new data file
    - manually >copy tada! u have .pst

    its free, tested, secure, simple :)

  6. Jason, U are the SuperMoron.

  7. Hi all,

    I might have found a way for outlook 2010.
    Create the e-mail account.
    Set the e-mail account to cached mode in email account settings.
    Shut down Outlook and go to
    Switch your .ost with the one there.

    When you start outlook it will complain that you have an old .ost and that you should delete it, but you can still see everything in it.

    Export everything you need from it and then delete it so you get a new.


    Mary christmas.

  8. The tool discussed in the post is good. T want to share a lonk found during my serching about the outlook file conversions is


    this resource helps me a lot in understanding the causes and resolutions of the corrupt ost files.

  9. I had searched a lot to resolve my corrupted ost file, after spending a couple of days i got


    a tool that is very efficent to convert all the contents of ost file into PST file. Free demo version of the tool is also useful to preview all your items in full.

  10. Hi

    To amend the list of some nice OST to PST conversion software, I found a very powerful utility that Converts OST file to its equivalent PST file created in MS Outlook 2010, 2007, 2003, 2002 (XP), and 2000. The software also provides compatibility with Windows 7, Vista, Server 2003, XP, and 2000.

  11. Once your .ost file gets corrupted you must use a third party utility to recover the .ost file by converting it into .pst file. I got such a tool to convert my ost file from


    the tool efficiently convert my corrupted .ost file into .pst file and recover all my ost file objects

  12. easily convert ost file to pst a very simple and easy steps. use SysTools ost to pst converter tool to export outlook exchange ost all file and data to outlook pst.

  13. the article is very informative and helpful. keep updating the world with such useful informations


    this links have all information about Search Engine optimization

  14. Hello

    Every One

    You Can Convert OST to PST File Very Simple

    Try SysTools OST to PST Conversion software will help you to easily convert OST files to PST files. Our OST to PST converter tool will you helps to Convert Exchange OST files to Outlook PST files. SysTools OST to PST Converter tool will also help you perform OST to PST Converter process. The tool employs high and advanced technology to convert Outlook Server to PST for quick and easy OST PST Converion.

    Visit Our Website : http://www.ost-to-pst.com

    FREE Download: http://www.systoolsdl.com/get.php?id=50

    You can Order of : http://www.ostpst.com/order.html

  15. Hi,

    Find easy way for converting inaccessible, damaged, orphan OST file to working PST file with OST to PST conversion software. It recovers emails from OST files that get deleted or lost due to virus attacks, header corruptions or database corruptions. It converts inaccessible OST file to PST file within few mouse clicks in no matter of time. First of all, OST to PST converter tool performs thorough scanning of unusable OST file and retrieves all existing emails, calendar, journals, notes, contacts, tasks etc and saves them to PST file. Its main features include, successful conversion of corrupt OST to PST, recovery of lost, deleted emails from OST files, complete recovery of emails, appointment, tasks, notes, calendar, journals, etc. SysTools OST Conversion software runs on any Windows Version 98, ME, 2000, 2003, XP, Vista and Win7. You can download a trial Version of Convert OST to PST FREE of cost, http://www.ost-to-pst.com

  16. Hello Everyone,

    Are you searching for tool which can convert OST to PST file? try OST to PST Conversion tool is a result oriented and easy to use OST recovery software for exchange administrators who need to recover user emails from Offline Storage(.ost) files which become corrupt, damaged or inaccessible due to server downtime, virus attacks, and insufficient server backup or accidental deletion of any email or important stuff. Our OST to PST Conversion software helps to Convert .ost files with entire items to .pst file and access it with MS Outlook and Outlook Express email clients. After successful conversion, OST recovery software provides 2 saving options: Select any saving option and view emails with the desired options. It supports MS Exchange Server 2007, 2003, 5.5 and 5.0.OST Recovery software installed on Windows Vista, XP, 2003, 2002 operating systems


  17. Hi,

    Using SysTools OST Recovery is a OST to PST Conversion software designed convert to unusable Microsoft Exchange Offline Storage (.OST) file to a Usable Personal Storage (.PST) file that can be used with Microsoft Outlook Software recovers all components form OST file including emails, contacts, tasks, notes, and journals and notes, found in the OST file are displayed in a tree like structure from where you can easily verify recovered email massages & save them separately to a PST file at a user specified location. It automatically created a profile in Microsoft Outlook to save your emails, so you don’t need to import the PST file to Outlook. SysTools OST Conversion Software runs on Any Windows Version 98, Me, 2000, 2003, XP, Vista and Win7. Try the DEMO version SysTools OST Recovery software FREE OF Cost, it will show you the process of recover your OST data and convert OST to PST files only, after getting result according to your requirement Get the Full Version of SysTools OST Recovery Software


  18. Hello,
    I am David Brenner

    Try SysTools OST Recovery Software is an advanced OST to PST Conversion tool is a helpful program to restore and convert emails of MS Exchange Offline Storage Table (.ost) files to Personal Storage Table (.pst) files. When the Exchange Server gets corrupt due to server crash, virus attack, and database corruption, etc, The OST files on the client’s computer still have mail messages and all other items of the mail account. These emails are successfully restored by our OST Conversion Software. This utility is helpful in a number of OST corruption situation is caused by external reason such as virus infection. SysTools OST Conversion Software has the capacity to recover OST components from all kinds of OST file corruption. Performing safe and secure OST file Conversion you can convert OST file to PST file access them. The Recovers items saved in PST format readable by Outlook. Other Important Features:

    * Simple and well guided steps to recover your OST Data.
    * Converts inaccessible Offline Storage (.OST) to Personal Storage (.PST).
    * Recovers email attachments too.
    * Supports Microsoft Exchange 5.0, 5.5, 2000 and 2003.
    * Restore email fields such as sender’s name, recipient’s name, subject, message flags, creation date/ items, etc.
    * Convert OST file even if password protected.
    * Restore deleted emails from ‘deleted items too.
    * Recover email messages, attachments, journals, calendar, notes, tasks, contacts. Appointments, list, etc.

    SysTools OST Recovery Software runs on any Windows Version 98, ME, 2000, 2003, XP, Vista, and Win7.You can download a trial version of convert OST to PST FREE of cost


  19. This works perfectly and was able to convert ost to pst. However I need to add, that ost file which I converted was actually linked to one of my ealier profile which got deleted. The new profile which I created got linked to new ost file and that’s why I was not able to see mails in earlier ost files

  20. For $99 bucks?? No thanks Vikas … will look elsewhere.

  21. Is there a totally free version out there? one that save the damn OST file into a PST file without charging 99+ for the job?

    Microsoft should make one for free, instead of delevering product that has problems. where is there a open source??

  22. Conversion from OST to PST is tricky and if not done properly, would result in data loss. Stellar Phoenix OST to PST Converter is one such utility which helped me in converting all my OST data to PST in a few easy steps.


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