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ost to pst

I need an ost to pst convertor for a 1.5 Gb file i will use it for once so i do not want to buy a software for this
any advice ?
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Go to the Mail icon in the Control Panel, note the existing location of your actual ost file used for Outlook.

Move the existing ost (so you can restore it later). Re-name the ost file you need to convert to pst so it the same and then substitue the files.  When you open Outlook, you will get the data from the ost you want to convert.  Once in Outlook, go the File > Outlook Data File and create a pst in the usual way.

Once completed and you have created the pst from the ost, you can delete (make sure you have a backup) and put your original ost back in the correct folder.
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jppinto i tryed this program it is not free
yjchong514 i am checking for your suggestion
richclawson i had already removed outlook 2007 now the computer has only 2010 so i need to convert file to the pst
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if the email users are still on Exchange, you can :

Open Outlook 2010

Wait that the mail is synchronized

Next export ALL in pst file
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no i have only the ost file
This is an 64 bit and trial demo program - yjchong514
I do not think if a free tool is there to help you out for this. However try Kernel for OST to PST.
3XLcom: What OS you have?
If you can connect to Exchange account, then you can:

1. Synchornize your local OST with your Exchange account,

2. Create a new PST file.

3. Copy all the contents in your OST file to PST file, which makes the conversion free.

If you cannot access your Exchange account, then you can use

Advanced Exchange Recovery


to make the conversion. But that is not free.
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This solved the problem