Knowledge Base

MAPI_E_NOT_FOUND error when adding CodeTwo Public Folder to the Outlook profile

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.


After installation of CodeTwo Public Folders Outlook Addin, it happens that information about a new type of database is not saved correctly in Outlook settings.


This causes the inability of CodeTwo Public Folders to add itself to the current Outlook Profile (Fig. 1.). When the user clicks Yes the MAPI error pops up (Fig. 2.) and the CodeTwo Public Folders functionality is not available in Outlook at all.

Adding CodeTwo Public Folders to Outlook profile
Fig. 1. Adding CodeTwo Public Folders to the Outlook profile.

MAPI error
Fig. 2. MAPI error after clicking Yes in the previous dialog window.

To fix this problem, simply run the C2PublicFoldersStoreInstaller.exe program located in the installation folder of CodeTwo Public Folders Outlook Addin. By default it’s

C:\Program Files\CodeTwo\CodeTwo Public Folders Outlook Add-in\


C:\Program Files(x86)\CodeTwo\CodeTwo Public Folders Outlook Add-in\

The standard configuration wizard will be launched – missing settings are added to Outlook in the background, so simply follow the wizard and set up your Outlook Addin. After launching Outlook the CodeTwo Public Folders program should work correctly.