.OAB File

The oab file extension is associated with Microsoft Outlook, a personal information manager, which is part of Microsoft Office, developed by Microsoft Corporation.

The Microsoft Outlook offline address book file (*.oab file) contains the properties of a user, such as e-mail addresses, that Outlook requires in order to send an e-mail message and display information about the user.

The oab files are used for Microsoft Exchange Server e-mail accounts.

Path to oab file:

Windows Vista, Windows 7, Windows 8, Windows 10

\Users\user\AppData\Local\Microsoft\Outlook

Windows XP, Windows Server 2003

\Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook

An oab file extension is used for Microsoft Outlook offline address book files. Offline address book files contain the properties of a user, such as e-mail addresses. The oab files are created, when users use Microsoft Exchange Server e-mail accounts.

How to open:

Use Microsoft Outlook to open offline address book files.

How to convert:

Conversion to other formats is not possible.