IMAPISession: MAPI_E_UNKNOWN_FLAGS Error is encountered when a user is trying to export the mailboxes of an Exchange Database (EDB) file to Office 365. Refer to screenshot below
To avoid the error in EDB to PST converter software , take the following factors into consideration before exporting EDB-mailbox data to Office 365:
Stellar Converter for EDBStellar Converter for EDB is a professional tool that proficiently converts online as well as offline Exchange Server database (EDB) files into Outlook PST files. Performs Single or Multiple Mailboxes Extraction as per requirement.