Business Miscellaneous Technology

A Free Guide to Open or Convert EDB file into MS Outlook 2016 PST

EDB is an acronym for Microsoft Exchange Server Database. It stores in-process and non-SMTP messages in MS Exchange Database. It uses b-tree database structure for storing messages.


  • Priv.edb – These files store private data of user mailboxes.
  • Pub. edb – These files store public or shared folders’ data of mailboxes.
  • .stm – These files were created to save e-mail attachments in MS Exchange server 2003 and previous editions only.

Benefits of EDB Conversion for Companies:

  • Enhanced Server Response
  • Preventive Solution to Avoid Database Corruption
  • Manage Sever Space Size
  • Reduce Chances of Jet Engine errors
  • Reduce size Database Log File

The conversion of EDB file to PST format can help users in maintaining a backup of all Exchange Server data. Once converted to PST format, users can access the stored data through other e-mail clients as well. In addition, with Outlook PST files, users have the flexibility to store data at any location and on different systems and access, the data items of the mailboxes.

Users can also use the free EDB to PST conversion method explained in the section below:

Free EDB to PST Conversion

Solution: Converts mailboxes in EDB to PST format using ExMerge.exe 

Use of ExMerge.exe is a free way to convert mailboxes from EDB to PST format. Before employing it to fulfill the purpose, it is essential that the user install the ExMerge.exe utility on their system. It can be installed only if the desktop has both MS Exchange Server and Admin software of Exchange.  Also, the following prerequisites must be fulfilled:

  1. Permission is required on the mailboxes that have to be merged.
  2. The system on which ExMerge.exe utility has to be run, MS Outlook and MS Exchange Administrator programs needs to be installed.
  3. An Exchange administrator does not have the right to open mailboxes if the Exchange Server version 2003 or 2000 is used.

Steps to Use ExMerge.exe Application 

Step 1: Download, install and configure ExMerge.exe application on your system. After this, start the software and log in to your Exchange Server account. With this, Microsoft Exchange Mailbox Merge Wizard will open wherein you need to click on the Next tab to proceed.

Indicative: Microsoft Exchange Mailbox Merge Wizard shows up

Step 2: Select the procedure you want to perform in MS Exchange mailbox. Select from the two options: Extract and Import (One-Step Procedure) or Extract and Import (Two-Step Procedure) and click on the Next tab.


Indicative: ‘Microsoft Exchange Mailbox Merge Wizard’ shows up

Step 3: On selecting Two-Step Procedure, you can select Step 1 (Extract data from an Exchange Server mailbox) or Step 2 (Import data into an Exchange Server Mailbox). It is advised that you select Step 1 and click on the Next tab.

Indicative: Selecting Step 1 from Two Procedure dialog box. 

Step 4: Here, enter the Microsoft Exchange Server name from which data has to be extracted and converted. Further, fill all the information such as Domain Controller Name, Port Number, and then click on the Next tab.


Indicative: Entry of Profile information for the source server

Step 5: From the Database Selection dialog box, select the database from which you want to extract data. This is the requirement if multiple databases exist in the Exchange Server. Then, click on the Next tab.

Indicative: Selection of database

Step 6: Select the mailbox or mailboxes available on the selected server from which you wish to operate the program against, and then click on the Next tab.

Indicative: Selection of mailbox

Step 7: Here, click on Change Folder tab to create a destination folder for saving the PST file in it. Further, click on the Next tab.

Image: Creation of folder to save PST file

Step 8: The status of the process is shown, and in some time, the operation completes successfully. Finally, click on the Finish tab.

Image: Creation of folder to save PST file

By executing all the steps from one to eight that have been explained above, you can convert the EDB file to PST format successfully.

Note – Once converted in the PST format, you can import the PST file in MS Outlook using the Import Export wizard. With this, you will have access to all the data items exported from EDB file to PST format.


  1. Safe and secure.
  2. Simple to execute.


  1. ExMerge application fails if Exchange Server 2007 is used.
  2. Lengthy and hence consumes a lot of time.
  3. Cannot work with mailbox greater than 2GB size.
  4. ExMerge fails if Exchange Server is corrupt.
  5. Cannot be used on front-end servers because it does not have a mailbox store.
  6. Applicable only on private folder of Exchange Server and not on Public Folders.
  7. ExMerge fails to extract data if the permissions are not correct. (Note – This limitation can be overcome by creating a new service account.)

Alternative Solution – Convert EDB to Outlook PST Using Stellar EDB to PST Converter

If ExMerge fails to perform EDB to PST conversion, and to overcome its disadvantages that are much more the advantages that it offers, then opt for a third-party tool Stellar EDB to PST Converter.


Free Demo:

This feature-rich software provides the following functionalities:

  • Converts both online and offline EDB file to PST format.
  • Converts emails, attachments, tasks, contacts, calendar, etc.
  • Supports ‘multiple EDB files’ and ‘Archive mailboxes’ conversion.
  • Exports offline EDB file to Office 365 and Live Exchange Server. 
  • Facilitates saving the converted file in EML, RTF, MSG, PDF & HTML formats. 
  • Supports Exchange Server 2016, 2013, 2010, 2007, 2003, 2000, and 5.5 versions.

Final Thoughts

When compared, Stellar EDB to PST Converter offers much more benefits as compared to the free EDB to PST conversion method that uses ExMerge utility. In addition, it requires less user intervention, therefore, reducing the possibility of errors and renders satisfying results without fail!

About the author


Martin Hoff

Martin Hoff is a technical consultant of numerous e-mail products like Exchange Messaging, MS Outlook, Novell GroupWise, Lotus Notes, etc. Being a passionate technical writer, he also loves to write free tutorials to eliminate technical jargons for non-technical/beginners.


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