Knowledge Base

Database in CodeTwo Public Folders

This article is meant for users of CodeTwo Public Folders. This software has been discontinued. You can check the list of currently available CodeTwo products here.


This article explains the way CodeTwo Public Folders stores data shared between computers with Outlook Add-in (client module) installed.


Everything that is located in the C2PublicFolders tree can be found on the machine where the Syncing Master (server module) is installed. By default, all items from the C2PublicFolders tree are stored in

C:\Program Files\CodeTwo\CodeTwo PublicFolders Server\Data

The elements shared from personal folders can also be found on the computer with the Syncing Master. The default path is as follows:

C:\Program Files\CodeTwo\CodeTwo PublicFolders Server\DataUsers

Every single item is saved as an .msg file in the folder corresponding to the shared folders in Outlook. Each of these folders contains two files (folder.dat and store.dat) that are created by default and include information about the structure and settings of the corresponding folder.

A local copy of C2PublicFolders tree is also stored in .pst files on each of the computers with Outlook Add-in.

  • In Windows XP, the local copy of C2PublicFolders.PST can be found in:
C:\Documents and Settings\user_name\Application Data\CodeTwo\C2PublicFoldersClient
  • Windows Vista users can find it in:

This way of storing shared items allows the users to work also in offline mode. Any changes made in the shared folders while working outside of the local network are saved to these local copies and automatically synchronized with the remaining computers when a user reestablishes the internet connection. This approach also decreases the risk of losing data due to the failure of the machine with Syncing Master because all items can be restored from one of the local copies saved on the computers with Outlook Add-in.

Click here to learn how to restore data from a PST file.
Click here to learn how to restore deleted individual data items.

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