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.EDB File Extension

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File TypeExchange Information Store Database

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Rare Uncommon Average Common Very Common
CategoryDatabase Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.


Database created by Microsoft Exchange Server; serves as the main repository for the mailbox data saved by Exchange; stores both in-process and stored non-SMTP messages; formatted using a b-tree structure, which includes a top level node and many child nodes.

More Information

Priv1.edb and Pub1.edb are the main EDB files used for the Exchange information store. They each have a corresponding .STM file that contain SMTP messages.

Programs that open EDB files
Microsoft Exchange Server
Stellar Phoenix Mailbox Exchange Recovery
Updated 6/21/2012