Go back to the new PST file, then paste all the contents into the PST file Go to the OST file, select and copy all the contents to be converted with your mouse. Make sure you can access all the contents in the OST file to be converted. However, if you can access the contents of the OST file in your Outlook, then you can perform the conversion manually, as follows:
There are several methods to convert OST file to PST file.įirst, Microsoft does not provide an official tool to do the conversion.
