You may use SysInspire EDB to PST free software for a more stable conversion of an EDB file into a working PST format with all folder structures intact. All mailbox objects, including calendars, contacts, calendars, email, attachments, and other items, can be exported from the Exchange database. By clicking the given link, you can get this software.

For More Info:- https://www.sysinspire.com/export-exchange-mailbox.html