Exchange 2007 Ost convert to 2010

I have a users mail archive in Exchange 2007. I think I need to convert this to a PST that can be imported into Exchange 2010 (our current server)
Does anyone know how to do this? Is here a free tool?
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Scott CSenior EngineerCommented:
Is everything running properly?  If so, an OST is simply a local copy of the mail on the server.  If you want to have a PST just create one and copy, don't move all emails to it.

However, if you do need to covert it here are a couple of utilities that can do this for you.  Be sure to run these on a copy of the OST, leaving the original untouched.
HKFueyAuthor Commented:
Hi Scott
We have migrated from 2007 to 2010 and the guy who did it said we needed to convert this file. He took it home for the weekend to do (it's a big file). Then he got knocked down by a car and is still in hospital after 3 weeks!

Your link to a free version is actually just the trial, they want $200 for the full version.
Scott CSenior EngineerCommented:
That's how it usually works, get the trial to see what you can get then pay the money to actually do the work.

Usually an OST only needs to be converted because a machine is off the network and an email account is irretrievably lost and you HAVE to convert the OST to get emails back.

If his account was successfully migrated and everything is on the server, there shouldn't need to be a reason to access the OST.

An OST is simply an offline copy of the emails that are already on the server.  It's normally used when a computer is not connected to a network so a mobile user can continue to read emails while on the go.

If you close out of Outlook, rename the OST to something else, then sign back into Outlook, a new one will be created and populated.

Why exactly is this guy saying it needs to be converted?  If the owner of the OST is working fine and not missing any emails, I can't see a reason this would be necessary.

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HKFueyAuthor Commented:
We have now got the (converted) file back.

Unfortunately when trying to add Account Settings\Data Files we get an error:
HKFueyAuthor Commented:
Thanks Scott. I bought a program "SysTools Outlook Recovery" opened the file and it was not what she wanted!
Scott CSenior EngineerCommented:
You're welcome.  What was it she wanted?
HKFueyAuthor Commented:
There were archives on the PC that have mysteriously disappeared.
Scott CSenior EngineerCommented:
Ah.  Yes, those would not be in the .OST.

Here is a little add-on from Microsoft that works nicely to backup .PST files.

I would suggest getting an external HD and configuring this to run once a week.

It's too late for now but this will keep the same thing from happening in the future.
HKFueyAuthor Commented:
Thanks! Will come in useful.
Scott CSenior EngineerCommented:
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