Convert OST file to PST

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How can I convert an outlook OST file from a deleted exchange account to a PST without having to spend a fortune on a some conversion software.
I have found a few programs that can do it but none of them work with Outlook 2003.

Here is a perfect solution which will help you convert an outlook OST file from a deleted exchange account to a PST. The software comes with a free demo version so you are sure about the success of the recovery process. you can get it here


Fantastic Member
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You can try the manual technique; which doesn't work as well as automated software as mentioned and is pricey for a reason.:headache: Mining local account messages, contact, calendar, and tasks out of Outlook manually is not for the average human to attempt. That requires a very high skill level and E-mail administration expertise. I've done that before, and you rarely get all the data out of the OST file. Part of that has to do with the fact that most Exchange Servers live on a domain-based network, and require a domain network login in order to sink shared account metadata such as shared inboxes and shared calendars. This means that this information can not be mined from the OST and put into a PST for local use, as it has no meaning in a LAN or local standalone PC environment. Automated paid software takes this into consideration and lets you answer questions about the environment the OST exchange file came from; in other words it lets you uncheck domain-based shared metadata from the conversion process and just get partial data such as E-mail messages from a non-shared E-mail inbox, contacts, and non-shared Calendar events. If you took this OST file from your work or from someone else's work, there are literally thousands of GPO's (Group Policy Object permissions) that can be set in the Exchange Server side, that have no direct analogous setting in a PST file.

I've done many of these conversions, in both directions, over the years, and they are never easy and unfortunately rarely provide a 100% data success rate on the conversion process.

It all comes down to "you get what you pay for". If you attempt to do a manual conversion on this file, for whatever reason, even if it did belong to you and you brought it home from an office environment or a now defunct business, you are going to be tearing your hair out in just a few days I guarantee you.:furious: I would spend the money on a program that automates this very difficult process for you as much as possible. Just so you know, there are companies who provide this service as an Outsourced Item and specialize in Outlook and Exchange conversions. We used to sell these services to corporate Clients when I was with IBM and Wang, and they are very expensive indeed. After attempting both manual and free-trial software and you get nowhere, you might consider a Paid service that specializes in this sort of thing.

Hope that gives you some insight.:)



Windows Forum Team
Staff member
Well if you still have access to the account the OST is being used for, the easiest way is to add a pst file and simply drag and drop your items into the PST file in Outlook. Disconnect the PST and you are done.

I would like to share another OST to PST Converter software that can also recover all OST data into four different workable file formats – OST to PST, MSG, VCF or EML without any problem. For more details try yourself here Outlook OST to PST Download Tool Online to Convert Cached OST Fileindex.html

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