Stella ost to pst recovery software is the best software to recover all ost file data in to pst file. stella ost to pst recovery software is best software to convert all corrupted ost file data in to office 365 account. This software is help to convert all ost mailbox items in to pst file. ost to pst recovery software is support all version 32bit and 64bit ost file.
For more info visit this link.
Convert OST to PST Manually
Open Outlook and go to the File menu.
Select the Import/Export option.
Choose Export to a file.
Select Outlook Data File (.pst)
Choose whether to export a specific folder or the whole account.
Check the Include subfolders box.
Next, select a destination for the Export, and then click Finish.
This may help, Will Joe