Looking for a utility that will convert Outlook 2010 .PST files to .OST files

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Looking for a utility that will convert Outlook 2010 .PST files to .OST files.

What kinds of utilities are available that can do this?

Please provide me with a complete list.
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Posted 6 years ago

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Photo of M3 Sweatt

M3 Sweatt, Official Rep

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The https://support.office.com/ is a good resource to search for these types of questions.

There are several methods to convert OST file to PST file. This is from https://social.technet.microsoft.com/Forums/en-US/c5f8de55-97f6-48af-b6f0-c010be90b5ba/how-to-conver...

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

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

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1a). Follow given some instruction: IN Outlook 2007


Tools -> Account Settings -> Email account -> More settings -> Advanced tab -> select Use Cached Exchange

Mode --> Click Offline Folder File Settings -> Browse to .OST file then restart Outlook. open your OST file

After restart outlook,

File -> Import and Export -> Export to a file -> .pst file


b). Create a new outlook .pst file and drag the folder to .pst file that you want to move

For more:  http://social.technet.microsoft.com/Forums/en-US/5d2a8c77-5599-4fee-9539-4f04c971e7b6/ost-to-pst-converter-problem?forum=officeitpro