Exchange Database File (EDB/.edb)

EDB aka Exchange Database file is the main repository of Exchange Server database, designed on single client-server architecture. Microsoft Exchange server makes use of Extensible Storage Engine in order to access its data. This EDB file includes the entire data components like email messages, folders, attachments.

The EDB file belongs to the category of Database Files.

Microsoft Exchange Server

Microsoft introduced Exchange Server in the year 1993. With the introduction of Exchange server, the EDB files came into existence.


hexadecimal: ef cd ab 89 (at offset 4)

The default location of EDB file depends of the version of Exchange Sever installed in the user machine. For each version, the default location will be different:

Exchange Server 2000 & 2003

  • C:\Program Files\Exchsrvr\MDBDATA\Priv1.edb
  • C:\Program Files\Exchsrvr\MDBDATA\Pub1.edb

Exchange Server 2007

  • C:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group\Mailbox Database.edb
  • C:\Program\Files\Microsoft\Exchange Server\Mailbox\First Storage Group\ .edb

Exchange Server 2010

  • C:\Program Files\Microsoft\Exchange Server\V14\Mailbox Database\Mailbox Database.edb
  • C:\Program Files\Microsoft\Exchange Server\V14\Public Folder Database\Public Folder Database.edb

Exchange Server 2013

  • C:\Program Files\Microsoft\Exchange Server\V15\Mailbox\Mailbox database name

Dirty Shutdown Errors

  • Database was not shutdown cleanly
  • Unable to mount database (hr=0×80004005, ec=-528)

Jet Engine Errors

  • JET_errRecordNotFound
  • JET_errKeyDuplicate Illegal duplicate key

Exchange Error 9518

  • Current Log File Missing Starting Storage Group

Exchange error 1068

  • The dependency service or group failed to start.
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