I would like to suggest you to take help of
Recoveryfix OST to PST Converter Tool to easily convert inaccessible or orphaned OST files to PST format. This advanced software ensures complete recovery of emails, contacts, attachments, calendars, tasks, and other mailbox items. It preserves the original folder hierarchy and data integrity during the conversion process. Users can save recovered data in PST, EML, MSG, or other formats.
Supported Versions: Windows Operating System: Windows 365, 11, 10, 8.1,8, 7, Vista, 2008, XP, 2002, and 2000 (both 32-bit and 64- bit)
Microsoft Outlook: MS Outlook 97 to MS Outlook 2019 and Office 365
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