Hey, Try to Export my Exchange mailbox to PST format as I moving from Exchange Environment but getting unknown errors. Since I need an urgent conversion of mailboxes from Exchange to Outlook, Try the SysTools Exchange Export Tool to move my mailboxes. While the migration process, other features are given below help me a lot such as:
1) It Displays my Mailboxes Details with Permission related to it.
2) The tool offers the option to Select Different Categories of Database to Export Specific Data of Exchange Mailboxes.
3) Hierarchy of Folder Maintained of my mailbox folder after the Export process.
4) Divide the Resulted PST File to avoid Large Size mailboxes in Outlook Application
5) Specific Filter to Export Mailboxes Details to PST in the Perfect way.
Robinson Shaw [Data Recovery Expert]
https://www.systoolsgroup.com/convert-edb-to-pst.html