Than is convenient to convert file to pst (Full Version)

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katjohnston14 -> Than is convenient to convert file to pst (7.May2015 2:07:16 PM)

After I picked up the domain controller Win2003 Server + Exchange 2003, I began to introduce workstations (all WinXP) in domain and users run under domain accounts. In Outlook 2003 I entered an old user name and Outlook itself found the mail database and settings. Everything was fine except for one user. He except one Exchange account had 2 more records of other POP3 server. Though I think it not being. Under a new user has risen mails only in the last two days, and in the folder C:\Documents and Settings\altuser\....\ instead of a single file outlook ost lie oulook0. ost, outlook1.ost outlook2.ost and outlook.pst archive.pst.. Archive.pst I looked - there is letters until 2013. But where are all the other letters until 2015???
One of the outlook files has a suspiciously large size, it is more than 1 GB. I'm trying to open it or rename just in outlook.оst without the numbers, and it swears and shows only a couple of letters. And if shorter to say then:
1. how to restore the Oulook 2003 bases
2. Than is convenient to convert file to pst.
3. As a result of what action appears the files outlook0.ost, outlook1.ost, etc. And how it is correct to bring together them back in one file. Surely someone had been in such a situation.
P. S Total file size is about 7 GB, so that is really a very lot of.

peterhaynes203 -> RE: Than is convenient to convert file to pst (8.May2015 2:36:35 AM)

Emails are stored on the server or on the client? How clients take away email via POP3 or MAPI?
-Look at the mailbox through OWA, the emails are there or not?
-Copy the files and create a new user profile. and the files look and convert Recovery Toolbox for Outlook. maybe will help.
File ost need for email in caching mode, when there is no connection to the servers. Messages are downloaded to the local machine and periodically update emails. If the mail exists on the server then delete all. ost files from the user folder and recreate profile on the new. Should all work.

geetjit13 -> RE: Than is convenient to convert file to pst (30.Jun.2015 4:31:13 AM)

you can configure your web based account to download mail services through POP3 access. First you configure MS Outlook with a POP3 account then add an Exchange account. This is a very time taken process and high risk. So before configuration you take complete backup, after that you can start recovery process. For more detail, you can read following blog :

Otherwise, download latest version at here : & Run Kernel for OST to PST conversion tool.

ruthqmiller -> RE: Than is convenient to convert file to pst (30.Jun.2015 6:50:06 AM)

If you want to convert OST file into PST file format use which can instantly recover OST emails in addition to export OST to PST, EML, MSG and HTML formats. It lets you to rip large sized PST file into small PST file (1GB up to 5GB).

smera -> RE: Than is convenient to convert file to pst (17.Jan.2016 11:55:16 PM)

read why to convert ost to pst here

mabil456 -> RE: Than is convenient to convert file to pst (19.Jan.2016 1:53:03 AM)


The ost file format is very complex. It starts with a file header containing the meta information of the whole file, followed by several parts containing the actual data. You can find more detailed information about the ost file format by searching on Google with the keyword “ost file format”. If the file header containing the meta information is corrupt, or any follow-up parts are damaged or corrupted, then you will not be able to open the file correctly with Ms Exchange. In such a case, the first step is to try to use the built-in repair or recovery function in the Ms Exchange, to see if it can repair or recover the corrupt file. If not, then you need to resort to a third-party software to recover Exchange to scan the corrupted file and retrieve all recoverable data for you. It is also possible to find a data recovery expert or company to do the task, but in most of the cases, they will also use a third-party tool to do the recovery for you.

There are several methods to convert OST file to PST file.

First, Microsoft does not provide an official tool to do the conversion. However, if you can access the contents of the OST file in your Outlook, then you can perform the conversion manually, as follows:

1. Start Outlook. Make sure you can access all the contents in the OST file to be converted.
2. Create a new PST file.
3. Go to the OST file, select and copy all the contents to be converted with your mouse.
4. Go back to the new PST file, then paste all the contents into the PST file

That will do the conversion.

You can also perform the conversion by export the contents of the OST file to a PST file by following the instructions at:

Second, if you can access the Exchange server containing the account data for the OST file, then you can use Export-Mailbox command to export the data into a PST file, similar to convert your OST file into a PST file. Below is the article about doing that:

Third, if you cannot access the OST file via Outlook, neither can you access the Exchange Server, then you can refer to Outlook MVPs' website discussing about this issue:

Forth, there are many third-party OST to PST conversion tools you can try, below is a list of them:

Nearly all these tools provide a free trial so you can try first to see if a tool works before purchase it.

The main difference between using the software by yourself and by a third-party service company is:
(1) The company is familiar with the data recovery industry so he knows which software is the best one. While you need to search and compare the software online by yourself, which is time-consuming.
(2) The company purchases the software for multiple usages, while you purchase the software for one-time usage only. So normally the service fee may be cheaper than the license fee for the software.
(3) DIY will keep your data confidential while do the recovery via a company may cause data breach.

Hope this will help

Good luck!

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