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What is PAB File Extension

File Extension is group of letters that specify the data type and helps windows to select the appropriate program to open the particular file. PAB (Personnel Address Book) file is used by Microsoft Outlook and Mack Outlook to store the Personnel contact details separately from your email message and user can insert or delete contacts manually.

Complete .PAB File Description

What is .pab File Format?

Microsoft Exchange Server is a mail server, Contact Manager and Calendaring software that enables users to send or receive the emails through a mail client Microsoft Outlook and Microsoft Outlook Express. The PAB file is used to store the personnel or organizational contacts separately for each user and Outlook stores .pab file separate from other Outlook data.

The .pab file is categorized as a data file that stores contact in formation and personnel address. It is different from OAB File which is also used by Outlook to store the contact details. User can manually insert a new contact detail or delete an existing one from the .pab file and it is used in Microsoft Outlook 2003 and its all earlier versions.

Location of PAB File

The PAB file stored in the Microsoft Exchange Server email client Outlook, the complete path is given below.
C:\Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook.

How to open .PAB File

PAB file can be opened by using Microsoft applications which are given below

If you are not able to open the .pab extension file with these applications then there may be some issue with PAB file. Here I am listing some common PAB file issues.

Issues of PAB File Format

Registry Key for PAB Extension File


I have tried to put all the information related to .pab file extension here and I am sure that this effort will help you, if you have any additional information then feel free to contact us.